{"title":"Fuel Rails","description":"\u003cp\u003eRadium Engineering fuel rails, the largest category in our Radium catalog. Direct fit and universal rails machined to feed any injector setup, with damper and regulator options to match.\u003c\/p\u003e","products":[{"product_id":"fpr-adapter-toyota-mazda","title":"Fuel Rail Adaptor Suit Toyota\/Mazda","description":"Fuel Rail Adaptor (Silver) - Allows Fitment of the Turbosmart Fuel Pressure Regulator to the OEM Fuel Rail.\u003cbr\u003e\u003cbr\u003eTurbosmart’s Fuel Rail Adaptor (Silver) is designed to easily allow the fitment of Turbosmart Fuel Pressure Regulators to the OEM fuel rail. This adaptor is suitable for Toyota and Mazda vehicles, ensuring a perfect connection between your Turbosmart regulator and the existing fuel delivery system. With Turbosmart’s Fuel Rail Adaptor, you’ll be able to keep your engine running smoothly and reliably. It’s an essential addition for any performance vehicle enthusiast who wants to get the most out of their ride. Get your Turbosmart Fuel Rail Adaptor today!","brand":"Turbosmart USA","offers":[{"title":"Silver","offer_id":43545092816963,"sku":"TS-0402-1003","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_d03b18d8-73c2-404a-ade9-0de6950e7e8f.jpg?v=1784310953"},{"product_id":"fpr-adapter-toyota-subaru","title":"Fuel Rail Adaptor Suit Toyota\/Subaru","description":"Fuel Rail Adaptor (Silver) - Allows Fitment of the Turbosmart Fuel Pressure Regulator to the OEM Fuel Rail.\u003cbr\u003e\u003cbr\u003eTurbosmart’s Fuel Rail Adaptor (Silver) is designed to easily allow the fitment of Turbosmart Fuel Pressure Regulators to the OEM fuel rail. This adaptor is suitable for Subaru and Toyota vehicles, ensuring a perfect connection between your Turbosmart regulator and the existing fuel delivery system. With Turbosmart’s Fuel Rail Adaptor, you’ll be able to keep your engine running smoothly and reliably. It’s an essential addition for any performance vehicle enthusiast who wants to get the most out of their ride. Get your Turbosmart Fuel Rail Adaptor today!","brand":"Turbosmart USA","offers":[{"title":"Silver","offer_id":43545097076803,"sku":"TS-0402-1002","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_11424501-de52-4a1f-9c1a-8f1ddd0767e0.jpg?v=1784311002"},{"product_id":"fpr-adaptor-subaru-nis-maz","title":"Fuel Rail Adaptor Suit Subaru\/Nis\/Maz","description":"\u003cp\u003e\u003c\/p\u003e","brand":"Turbosmart USA","offers":[{"title":"Silver","offer_id":43545101140035,"sku":"TS-0402-1001","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_90234784-a9c6-4518-8ca6-2fa5f456ac54.jpg?v=1784311041"},{"product_id":"fpr-adaptor-mitsubishi-evo","title":"Fuel Rail Adaptor Suit Mitsubishi (EVO)","description":"Fuel Rail Adaptor (Silver) - Allows Fitment of the Turbosmart Fuel Pressure Regulator to the OEM Fuel Rail.\u003cbr\u003e\u003cbr\u003eThis Turbosmart Fuel Rail Adaptor Suit Mitsubishi (EVO) features an easy and straightforward installation process. As a result, your engine can perform at its peak in no time! With the Turbosmart Fuel Rail Adaptor, you'll enjoy an increased fuel flow rate, resulting in more horsepower and torque gains. The Turbosmart Fuel Rail Adaptor is designed for reliable performance under extreme conditions and is ideal for street, drag, drift and race applications. Get yours today and unleash your vehicle’s true potential!","brand":"Turbosmart USA","offers":[{"title":"Silver","offer_id":43545146851395,"sku":"TS-0402-1014","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_f5bfce71-518f-490e-8820-1a7b7ca7e57e.jpg?v=1784311575"},{"product_id":"fpr-adapter-subaru-sti","title":"Fuel Rail Adaptor Suit Subaru (STI)","description":"Fuel Rail Adaptor (Silver) - Allows Fitment of the Turbosmart Fuel Pressure Regulator to the OEM Fuel Rail.\u003cbr\u003e\u003cbr\u003eTurbosmart’s Fuel Rail Adaptor (Silver) is designed to easily allow the fitment of Turbosmart Fuel Pressure Regulators to the OEM fuel rail. This adaptor is suitable for Suburu (STI) vehicles, ensuring a perfect connection between your Turbosmart regulator and the existing fuel delivery system. With Turbosmart’s Fuel Rail Adaptor, you’ll be able to keep your engine running smoothly and reliably. It’s an essential addition for any performance vehicle enthusiast who wants to get the most out of their ride. Get your Turbosmart Fuel Rail Adaptor today!","brand":"Turbosmart USA","offers":[{"title":"Silver","offer_id":43545155502147,"sku":"TS-0402-1013","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_d6d20684-b54a-4ca5-92d0-2a0dfe58f392.jpg?v=1784311657"},{"product_id":"fpr-adapter-audi-vw","title":"Fuel Rail Adaptor Suit Audi\/VW\/Ford","description":"Fuel Rail Adaptor (Silver) - Allows Fitment of the Turbosmart Fuel Pressure Regulator to the OEM Fuel Rail. 1\/8NPT outlet and return.\u003cbr\u003e\u003cbr\u003eTurbosmart’s Fuel Rail Adaptor (Silver) is designed to easily allow the fitment of Turbosmart Fuel Pressure Regulators to the OEM fuel rail. This adaptor is suitable for Audi, VW, and Ford XR6T vehicles, ensuring a perfect connection between your Turbosmart regulator and the existing fuel delivery system. With Turbosmart’s Fuel Rail Adaptor, you’ll be able to keep your engine running smoothly and reliably. It’s an essential addition for any performance vehicle enthusiast who wants to get the most out of their ride. Get your Turbosmart Fuel Rail Adaptor today!","brand":"Turbosmart USA","offers":[{"title":"Silver","offer_id":43545159008323,"sku":"TS-0402-1006","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_7fac1896-e3fd-4d6c-ac02-8b5eb87dd7ff.jpg?v=1784311709"},{"product_id":"fpr-adaptor-mitsubishi","title":"Fuel Rail Adaptor Suit Mitsubishi","description":"Fuel Rail Adaptor (Silver) - Allows Fitment of the Turbosmart Fuel Pressure Regulator to the OEM Fuel Rail.\u003cbr\u003e\u003cbr\u003eTurbosmart’s Fuel Rail Adaptor (Silver) is designed to easily allow the fitment of Turbosmart Fuel Pressure Regulators to the OEM fuel rail. This adaptor is suitable for Mitsubishi vehicles, ensuring a perfect connection between your Turbosmart regulator and the existing fuel delivery system. With Turbosmart’s Fuel Rail Adaptor, you’ll be able to keep your engine running smoothly and reliably. It’s an essential addition for any performance vehicle enthusiast who wants to get the most out of their ride. Get your Turbosmart Fuel Rail Adaptor today!","brand":"Turbosmart USA","offers":[{"title":"Silver","offer_id":43545164152899,"sku":"TS-0402-1005","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_e8436b58-7396-401f-8e1a-fc248effc6f8.jpg?v=1784311776"},{"product_id":"fpr-adapter-honda","title":"Fuel Rail Adaptor Suit Honda","description":"Fuel Rail Adaptor (Silver) - Allows Fitment of the Turbosmart Fuel Pressure Regulator to the OEM Fuel Rail.\u003cbr\u003e\u003cbr\u003eTurbosmart’s Fuel Rail Adaptor (Silver) is designed to easily allow the fitment of Turbosmart Fuel Pressure Regulators to the OEM fuel rail. This adaptor is suitable for Honda vehicles, ensuring a perfect connection between your Turbosmart regulator and the existing fuel delivery system. With Turbosmart’s Fuel Rail Adaptor, you’ll be able to keep your engine running smoothly and reliably. It’s an essential addition for any performance vehicle enthusiast who wants to get the most out of their ride. Get your Turbosmart Fuel Rail Adaptor today!","brand":"Turbosmart USA","offers":[{"title":"Silver","offer_id":43545166807107,"sku":"TS-0402-1004","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_b564db50-7479-4dd9-afc0-78ea0fca8443.jpg?v=1784311805"},{"product_id":"radium-engineering-fuel-rail-kit-aftermarket-2008-2015-mitsubishi-evo-x-20-0112-12","title":"Radium Engineering Fuel Rail | 2008-2015 Mitsubishi Evo X (20-0112-12)","description":"\u003cp\u003e\u003cstrong\u003eA 4B11T making serious power will outrun the factory fuel rail's plumbing long before it runs out of injector.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBig injectors and E85 conversions need a rail that flows and ports that accept real fittings, not crimped factory lines. The \u003cstrong\u003eRadium Engineering Fuel Rail\u003c\/strong\u003e for the Evo X is CNC machined from solid 6061 aluminum with a large 0.69\" internal bore and bright-dip anodized finish, and all three ports are tapped 8AN ORB to accept regulators, pulse dampers, gauges, and high flow feed lines. This is the basic rail kit, so plan your fittings around your build. The foundation piece of the Radium Evo X fuel delivery system.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConsistent fuel delivery to all four injectors, even with large injectors at high duty cycle\u003c\/li\u003e\n\u003cli\u003eFreedom to build the exact fuel system layout your power goal demands\u003c\/li\u003e\n\u003cli\u003eClean, direct mounting for a Radium regulator, damper, or gauge right on the rail\u003c\/li\u003e\n\u003cli\u003eA rail that will not be the limiting factor as the build grows\u003c\/li\u003e\n\u003cli\u003eHardware-store-free installation, since the stainless mounting bolts come in the box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCNC machined from solid 6061 aluminum with bright-dip anodized surface finish\u003c\/li\u003e\n\u003cli\u003eLarge 0.69\" internal bore supports all necessary engine power requirements\u003c\/li\u003e\n\u003cli\u003eAll three ports tapped 8AN ORB (3\/4-16 O-ring) for adapter fittings, direct mount regulators, fuel pulse dampers, and gauge adapters\u003c\/li\u003e\n\u003cli\u003eReplacement stainless steel fuel rail bolts and FPR line bolts included\u003c\/li\u003e\n\u003cli\u003eIntegrates with the Radium Evo X fuel pump hanger, feed kit, and return kit for a complete system\u003c\/li\u003e\n\u003cli\u003eFittings sold separately on this basic kit (20-0112-12)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003ePort injection lives or dies on rail volume and plumbing. The 0.69\" bore acts as a reservoir that buffers each injector event, and the 8AN ORB ports mean every connection seals on an O-ring boss instead of tapered threads. How you populate the three ports depends on your build: a Radium direct mount regulator in the top or end port, a feed line adapter at the inlet, and a fuel pulse damper where space allows. One clearance note straight from Radium: the standard FPD-R damper fits the center or outlet port, but the taller FPD-XR interferes with the MIVEC solenoid if installed in the outlet port, so run it in the center port instead. Verify clearance for larger accessories using Radium's dimensional drawings before ordering fittings. If you want plug-and-play hookup to the factory feed line while reusing the OEM regulator, Radium's plumbing kit for this rail is sold separately, as is the complete Evo X fuel delivery system that pairs this rail with the hanger, feed kit, and return kit.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Radium Engineering Evo X fuel rail\u003c\/li\u003e\n\u003cli\u003eStainless steel fuel rail mounting bolts\u003c\/li\u003e\n\u003cli\u003eStainless steel FPR line bolts\u003c\/li\u003e\n\u003cli\u003eFittings NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2008-2015 Mitsubishi Lancer Evolution X (4B11T)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672688263235,"sku":"20-0112-12","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0112-12-28326443974726_8defac06-707f-41fc-b648-049d2949e2b3.jpg?v=1786717047"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-2008-2015-mitsubishi-evo-x-20-0112-pk","title":"Radium Engineering Fuel Rail Plumbing Kit | 2008-2015 Mitsubishi Evo X (20-0112-PK)","description":"\u003cp\u003e\u003cstrong\u003eA billet rail is only half the job; connecting it to the factory feed line cleanly is the other half.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAdapting an aftermarket rail to the Evo X's OEM fuel line and regulator usually means hunting down a pile of one-off fittings. The \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit\u003c\/strong\u003e solves that in one box, pairing a pre-fabricated 24\" 6AN PTFE hose with the exact adapters to connect the factory feed line at the firewall to the Radium Evo X fuel rail while reusing the OEM fuel pressure regulator. Everything arrives ready to bolt on. One kit, zero guesswork.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAn afternoon install instead of a fitting scavenger hunt\u003c\/li\u003e\n\u003cli\u003eLeak-free confidence from PTFE hose and O-ring sealed connections\u003c\/li\u003e\n\u003cli\u003eFactory drivability retained by reusing the OEM regulator\u003c\/li\u003e\n\u003cli\u003eA clean engine bay with purpose-made hose lengths, not coiled excess\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for the Radium Evo X fuel rail (20-0112-12, sold separately)\u003c\/li\u003e\n\u003cli\u003eConnects the factory feed line to the rail and reuses the OEM fuel pressure regulator\u003c\/li\u003e\n\u003cli\u003ePre-fabricated 24\" 6AN PTFE hose with 45-degree and 90-degree swivel hose ends\u003c\/li\u003e\n\u003cli\u003e5\/16\" SAE to 6AN male fitting adapts the incoming factory line near the firewall\u003c\/li\u003e\n\u003cli\u003e8AN ORB to 6AN male fitting adapts the hose to the rail inlet, with an FPR adapter for the outlet port and an 8AN ORB plug for the top port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe kit works with the factory quick-connect feed line: the 5\/16\" SAE adapter clicks onto the OEM line near the firewall and converts it to 6AN male, the PTFE hose spans to the rail, and the 8AN ORB to 6AN fitting seals into the rail inlet port. At the outlet, the two-piece FPR adapter lets the factory regulator bolt to the Radium rail in its stock orientation, keeping the OEM return and vacuum reference untouched. The 8AN ORB plug closes the rail's top port unless you choose to run a damper or gauge there instead. PTFE hose matters here because it is impervious to modern fuels, including ethanol blends, and will not degrade or smell like rubber lines can. This kit contains plumbing only; the fuel rail itself is sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x 20-0290 5\/16\" SAE to 6AN male fitting\u003c\/li\u003e\n\u003cli\u003e1x Pre-fabricated 24\" 6AN PTFE hose with 45-degree and 90-degree swivel ends\u003c\/li\u003e\n\u003cli\u003e1x 14-0151 8AN ORB to 6AN male fitting\u003c\/li\u003e\n\u003cli\u003e1x 20-0301 FPR adapter (reuses OEM pressure regulator)\u003c\/li\u003e\n\u003cli\u003e1x 14-0150 8AN ORB plug\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2008-2015 Mitsubishi Lancer Evolution X with Radium fuel rail 20-0112-12 (rail sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672688459843,"sku":"20-0112-PK","price":113.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0112-pk-14673845289030_0bd0539b-8c4f-4636-8905-7aac491d702e.jpg?v=1786717051"},{"product_id":"radium-engineering-fuel-rail-kit-2003-2006-mitsubishi-evolution-8-9-20-0119","title":"Radium Engineering Fuel Rail Kit | 2003-2006 Mitsubishi Evolution 8\/9 (20-0119-12)","description":"\u003cp\u003e\u003cstrong\u003eThe factory Evo 8\/9 rail feeds your injectors through a 0.22\" orifice; that math stops working as the power climbs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe OEM 4G63 fuel rail inlet flange necks flow down to a restrictive 5.7mm passage, a bottleneck most aftermarket rails simply copy. The \u003cstrong\u003eRadium Engineering Fuel Rail Kit\u003c\/strong\u003e for the Evo 8\/9 eliminates that flange entirely, pairing a large 0.69\" internal bore with 8AN ORB ports that adapt to common AN fuel hose on both ends of the rail. CNC machined from solid 6061 aluminum, anodized, and laser etched, it is safe for all fuels including E85. This is the basic rail, ready for the custom fuel system you are building around it.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel delivery that keeps up when big injectors and E85 multiply the demand\u003c\/li\u003e\n\u003cli\u003eNo more factory inlet restriction choking the rail at high flow\u003c\/li\u003e\n\u003cli\u003eStraightforward adaptation to AN hose at either end of the rail\u003c\/li\u003e\n\u003cli\u003eDirect mounting options for a Radium regulator, damper, or gauge at the ports\u003c\/li\u003e\n\u003cli\u003eA finish that looks right at home in a built engine bay\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 0.69\" internal bore supports all necessary engine power requirements\u003c\/li\u003e\n\u003cli\u003eEliminates the restrictive OEM 2-bolt inlet flange with its 0.22\" (5.7mm) orifice\u003c\/li\u003e\n\u003cli\u003eCNC machined from solid 6061 aluminum, anodized and laser etched\u003c\/li\u003e\n\u003cli\u003ePorts tapped 8AN ORB, accepting Radium adapter fittings, direct mount regulators, pulse dampers, and gauge adapters\u003c\/li\u003e\n\u003cli\u003eCompatible with all fuel types including alcohol mixtures such as E85\u003c\/li\u003e\n\u003cli\u003eCompatible with factory or OEM-equivalent height injectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRail volume and inlet area set the ceiling on how consistently fuel reaches each injector, and the 4G63's factory setup gives away both. This rail's 0.69\" bore acts as a pressure reservoir across all four injectors while the full-size 8AN ORB ports remove the choke point at the inlet. Building around it is a matter of picking fittings: adapt the inlet to your feed hose, then run a direct mount regulator, pulse damper, or gauge adapter at the remaining ports, checking clearance for larger accessories against Radium's dimensional drawings. Injector compatibility is worth a careful look, since the rail is designed around factory or OEM-equivalent injectors, meaning the same height and O-ring dimensions as stock; confirm with your injector supplier when upgrading. All fittings are sold separately on this basic kit. For an easy hookup to the factory feed system and regulator, Radium's Evo 7-9 plumbing kit is available separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Radium Evo 8\/9 fuel rail with mounting hardware\u003c\/li\u003e\n\u003cli\u003eFittings NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2003-2005 Mitsubishi Lancer Evolution VIII (4G63)\u003c\/li\u003e\n\u003cli\u003e2006 Mitsubishi Lancer Evolution IX (4G63)\u003c\/li\u003e\n\u003cli\u003eCompatible with factory or OEM-equivalent height fuel injectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672689410115,"sku":"20-0119-12","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0119-12-fuel-rail-only-20-0119-12-28368389767238.jpg?v=1786717058"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-multiple-subaru-fitments-20-0578-84","title":"Radium Engineering Parallel Fuel Rail Plumbing Kit | 2008-2021 Subaru STI (20-0984)","description":"\u003cp\u003e\u003cstrong\u003eTwo rails fed evenly, one regulator on the strut tower, and an engine bay that finally looks planned.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit, Subaru EJ, Parallel\u003c\/strong\u003e complements a Radium EJ fuel rail installation by feeding each rail in a parallel configuration: \u003ccite index=\"1-1\"\u003ethe feed and return lines enter the MPR-RA regulator from the rear and output through the front to the fuel rails, with the regulator securing to the LH strut tower using the provided stainless steel mounting bracket\u003c\/cite\u003e. A Radium 0-100psi fuel pressure gauge is included for calibration, and fittings with 6AN hose interface with the OEM feed and return hard lines. \u003ccite index=\"1-1\"\u003eBecause the hoses and fittings are consolidated, the parallel kit is a good option for cleaning up the engine bay.\u003c\/cite\u003e All hose is resistant to every fuel type including E85. Fuel rails sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEven delivery to both banks through the parallel feed architecture\u003c\/li\u003e\n\u003cli\u003eAn engine bay cleaned up by consolidated hoses and fittings\u003c\/li\u003e\n\u003cli\u003ePressure set with confidence, the included 0-100psi gauge handling calibration\u003c\/li\u003e\n\u003cli\u003eFactory hard lines interfaced directly, no line fabrication for the stock-piping install\u003c\/li\u003e\n\u003cli\u003eAdjustable regulation from the strut-tower-mounted Radium multi-port regulator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFeeds Radium Subaru EJ fuel rails in a parallel configuration (rails with 8AN ORB ports required, sold separately)\u003c\/li\u003e\n\u003cli\u003eRadium MPR-RA adjustable multi-port regulator with stainless steel LH strut tower bracket\u003c\/li\u003e\n\u003cli\u003eRadium 0-100psi fuel pressure gauge included for calibration\u003c\/li\u003e\n\u003cli\u003eFittings and 6AN hose included to interface with the OEM feed and return hard lines\u003c\/li\u003e\n\u003cli\u003e\u003ccite index=\"5-1\"\u003eCompatible with the 2008+ Impreza (WRX\/STi) and Forester platform due to the regulator mounting location and OEM fuel filter placement\u003c\/cite\u003e\u003c\/li\u003e\n\u003cli\u003eAll hose resistant to all fuels including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium offers series and parallel kits for the EJ, and both perform equally well, with the decision resting on personal preference: series echoes the factory routing through the Radium DMR, while this parallel kit consolidates everything at the MPR on the strut tower for symmetry and serviceability. Two installation notes from Radium's instructions matter at planning time: there are no provisions included for EVAP, so a new line replaces the hard line under the manifold, and installation places plugs in the rails' unused ports with the swiveling fittings in the rear ports, O-rings oiled throughout. Builds that have already replaced factory piping with aftermarket AN lines can still use this kit by changing the fittings on the regulator where the feed and return lines meet. Pulse dampers, if used, install in the rail bottom ports during the same session.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Radium MPR-RA adjustable fuel pressure regulator with stainless mounting bracket\u003c\/li\u003e\n\u003cli\u003e1x Radium 0-100psi fuel pressure gauge\u003c\/li\u003e\n\u003cli\u003e6AN fuel hose and all fittings to interface with the OEM feed and return hard lines\u003c\/li\u003e\n\u003cli\u003eFuel rails NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2008-2014 Subaru Impreza WRX STI (EJ)\u003c\/li\u003e\n\u003cli\u003e2015-2021 Subaru WRX STI\u003c\/li\u003e\n\u003cli\u003eRadium Subaru EJ fuel rails with 8AN ORB ports; series version sold separately\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672690393155,"sku":"20-0984","price":379.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0984-30912252117062_ecf27dd3-5e66-4035-83de-29e2638c82c1.jpg?v=1786717064"},{"product_id":"radium-engineering-top-feed-fuel-rail-upgrade-multiple-subaru-fitments-20-0567-02-479-02-372","title":"Radium Engineering Top Feed Fuel Rail Upgrade | 2001-2006 Subaru WRX \/ STI EDM\/JDM (20-0577-02)","description":"\u003cp\u003e\u003cstrong\u003eThe EJ's factory fuel rails were never sized for the injectors a built Subaru actually runs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBig top feed injectors need a rail with volume and real ports behind them. The \u003cstrong\u003eRadium Engineering Top Feed Fuel Rail Upgrade\u003c\/strong\u003e for factory top feed EJ engines is a machined aluminum rail pair with three 8AN ORB threaded ports per rail, six total, ready for feed lines, a direct mount regulator, pulse dampers, or gauge adapters in whatever arrangement your system calls for. This is an upgrade rail, meaning your factory or OEM-equivalent injectors carry over. Thermal insulating spacers keep manifold heat out of the fuel. The rail your EJ fuel system should have started with.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStable fuel delivery across all four injectors with volume the factory rails lack\u003c\/li\u003e\n\u003cli\u003eReal plumbing freedom, with six 8AN ORB ports to configure feed, return, damping, and monitoring\u003c\/li\u003e\n\u003cli\u003eCooler fuel from thermal insulating spacers isolating the rails from the hot intake manifold\u003c\/li\u003e\n\u003cli\u003eA straight swap using your existing factory-size injectors\u003c\/li\u003e\n\u003cli\u003eClean integration with Radium's Subaru parallel plumbing kits and regulators\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMachined aluminum fuel rails for Subaru EJ engines with factory top feed injectors\u003c\/li\u003e\n\u003cli\u003eThree 8AN ORB threaded ports per rail (six total) accepting Radium adapters, direct mount regulators, dampers, and gauge fittings\u003c\/li\u003e\n\u003cli\u003e20-0567-02: 8AN ORB port machined in the underside center of each rail\u003c\/li\u003e\n\u003cli\u003eUpgrade-style rail: compatible with factory or OEM-equivalent injectors (same height and O-ring dimensions)\u003c\/li\u003e\n\u003cli\u003eThermal insulating spacers included to limit intake manifold heat transfer\u003c\/li\u003e\n\u003cli\u003eOEM 2-bolt flange regulator reusable with Radium adapter 20-0303 (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium builds two families of Subaru rails, and knowing which you need saves a return. Upgrade rails, like this one, fit engines that already run top feed injectors from the factory and reuse OEM or OEM-equivalent injectors; conversion rails are for switching side feed or air-assist engines to top feed and are a different product. Injector selection follows one hard rule: same height and same upper and lower O-ring diameters as OEM, and Radium defers to your injector supplier and tuner for brand and flow specifics. One clearance note decides between the two variants of this rail: the center lower port bulge on the 20-0567-02 can interfere with the early AVCS solenoids on the EJ207 and JDM EJ205, and those engines should use the top-port 20-0577-02 instead, which shares identical mounting and injector spacing but relocates the third port to the top of each rail. Certain JDM STI and EJ253 applications running the 20-0577-02 also require the 20-0372 adapter set. Fittings, plumbing, and injectors are sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Machined aluminum top feed fuel rails (port location per selected variant)\u003c\/li\u003e\n\u003cli\u003eThermal insulating spacers and mounting hardware\u003c\/li\u003e\n\u003cli\u003eFittings, plumbing, and injectors NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0567-02: 2002-2014 Subaru Impreza WRX (USDM), 2007-2014 WRX (JDM\/EDM), 2007-2021 WRX STI, 2006-2013 Forester XT, 2001-2003 Legacy GT (JDM), 2007-2012 Legacy GT and Outback XT, 2005-2006 Saab 9-2X Aero\u003c\/li\u003e\n\u003cli\u003e20-0577-02 (top port): 2001-2006 Impreza WRX (JDM\/EDM), 2001-2006 WRX STI (EDM), 2001-2002 WRX STI (JDM); with 20-0372 adapters: 2003-2006 WRX STI (JDM), 2004-2011 Impreza EJ253, 2005-2010 Forester EJ253, 2005-2012 Legacy EJ253, 2006-2009 Outback EJ253\u003c\/li\u003e\n\u003cli\u003eFactory top feed EJ engines only; EJ207 and JDM EJ205 with early AVCS require the 20-0577-02 top-port variant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Top Feed Upgrade","offer_id":43672690425923,"sku":"20-0577-02","price":208.95,"currency_code":"USD","in_stock":true},{"title":"Fuel Rail Adapter for Version 8\/9 EJ207\/EJ253","offer_id":43672690458691,"sku":"20-0372","price":47.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/maperformance-28360204943430_a7f7952f-0c4c-4615-a334-89a9324bb390.jpg?v=1786717064"},{"product_id":"radium-fuel-rail-upgrade-1994-2005-mazda-mx-5-miata-20-0369","title":"Radium Fuel Rail Upgrade | 1994-2005 Mazda MX-5 Miata (20-0369)","description":"\u003cp\u003e\u003cstrong\u003eThe BP-powered Miata deserves better than a fuel rail designed around 1990s injector duty cycles.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhether the plan is boost, E85, or just modern plumbing, the factory rail's fixed lines limit where a 1.8L Miata build can go. The \u003cstrong\u003eRadium Engineering Fuel Rail\u003c\/strong\u003e for the 1994-2005 MX-5 is CNC machined from extruded 6063 aluminum, black anodized and laser etched, with all three ports machined to 8AN ORB threads. The injector bores are 11mm ID just like the OEM rail, so factory injectors drop right in, and the whole kit is safe for every fuel including E85. This is the rail-only kit, ideal for custom fuel systems.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom to plumb the fuel system your build actually needs, with three real ORB ports\u003c\/li\u003e\n\u003cli\u003eFactory injectors or upgrades slotting into familiar 11mm bores without adapter drama\u003c\/li\u003e\n\u003cli\u003eCooler, more stable fuel with phenolic washers insulating the rail from a heat-soaked intake manifold\u003c\/li\u003e\n\u003cli\u003eConfidence switching to E85 without second-guessing the rail\u003c\/li\u003e\n\u003cli\u003eA finish that looks intentional under an NA or NB hood\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCNC machined from extruded 6063 aluminum, black anodized and laser etched\u003c\/li\u003e\n\u003cli\u003eAll 3 ports machined with 8AN ORB (3\/4-16 female) threads for adapters, regulators, dampers, and gauges\u003c\/li\u003e\n\u003cli\u003e11mm ID injector bores matching OEM, so factory injectors are permitted\u003c\/li\u003e\n\u003cli\u003eCompatible with all fuel types including alcohol mixtures such as E85\u003c\/li\u003e\n\u003cli\u003eReuses the OEM plastic spacers; phenolic thermal insulating washers included to isolate the rail from the aluminum intake manifold\u003c\/li\u003e\n\u003cli\u003eStainless steel mounting hardware included; plumbing sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium built this rail for the Mazda 1.8L DOHC BP engine across both chassis generations, and the three 8AN ORB ports are what open it up: run a feed adapter at one end, a Radium direct mount regulator or the OEM-style hardware at the other, and a pulse damper or gauge adapter in the third as your system requires. The phenolic washers are a small detail that earns its place, since the BP's aluminum intake manifold conducts engine heat straight into anything bolted to it, and insulating the rail keeps fuel temperature more consistent on hot days and long sessions. This kit is the bare rail with mounting hardware, so plan your fittings up front. For plug-and-play factory hookups, Radium offers separate plumbing kits: the 1994-1997 version retains the OEM regulator and replaces the feed and return hoses, while the 1999-2005 version retains the OEM pulse damper and feed hose, noting that EGR-equipped cars need the EGR removed for damper clearance.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized, laser etched fuel rail\u003c\/li\u003e\n\u003cli\u003eStainless steel mounting hardware\u003c\/li\u003e\n\u003cli\u003ePhenolic thermal insulating washers\u003c\/li\u003e\n\u003cli\u003ePlumbing and fittings sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1994-1997 Mazda Miata (1.8L BP)\u003c\/li\u003e\n\u003cli\u003e1999-2005 Mazda MX-5 Miata (1.8L BP)\u003c\/li\u003e\n\u003cli\u003e1994-1996 Eunos Roadster (1.8L BP)\u003c\/li\u003e\n\u003cli\u003eCompatible with most Mazda 1.8L DOHC BP engines and factory-size injectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672690753603,"sku":"20-0369","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0369-28367685320774_965c4751-6265-4c9a-b6d1-6fbb221b67d6.jpg?v=1786717069"},{"product_id":"radium-engineering-fuel-pulse-damper-oem-style-14-0128","title":"Radium Engineering Fuel Pulse Damper OEM Style (14-0128)","description":"\u003cp\u003e\u003cstrong\u003eThe stumble your tuner cannot tune out might not be a tune problem at all.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEvery injector opening and closing fires a pressure pulse back into the rail, and enough of them stack into genuinely unstable fuel pressure. The \u003cstrong\u003eRadium Engineering OEM Style Fuel Pulse Damper\u003c\/strong\u003e is the simplest cure: an OEM quality damper with a 3\/8\" NPT male thread arriving with impregnated pipe thread paste, ready to install into any rail or fitting with a matching port. Its internal diaphragm absorbs the oscillations and smooths rail pressure, a correction measurable across the RPM range. Especially with high flow injectors, this small part earns its spot.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA calmer idle, since pulse-driven pressure swing is a classic idle surge culprit\u003c\/li\u003e\n\u003cli\u003eFewer erratic lean air\/fuel spikes, the stumbling that resists every tuning pass\u003c\/li\u003e\n\u003cli\u003eConsistent rail pressure across the RPM range, measurable on a gauge\u003c\/li\u003e\n\u003cli\u003eThe biggest benefit exactly where it is needed most: high flow injector setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM quality fuel pulse damper with internal pressure-absorbing diaphragm\u003c\/li\u003e\n\u003cli\u003e3\/8\" NPT male thread with impregnated pipe thread paste, ready to install\u003c\/li\u003e\n\u003cli\u003eMountable at any angle, including upside down\u003c\/li\u003e\n\u003cli\u003eSmooths pressure oscillations created by injector opening and closing events\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003ePulse dampers are the unglamorous part of a stable fuel system, and where they go matters more than which one you buy. Most systems want the damper on the rail itself, close to the injectors making the noise, but Radium notes there are cases where multiple dampers are necessary and times when a system benefits from a damper on the return line as well; if a pressure trace still shows oscillation after the first damper, the system is telling you where the second belongs. This OEM style unit is the universal building block of that strategy, since 3\/8\" NPT ports are easy to machine or adapt into nearly any rail. The pre-applied thread paste means installation is thread-and-torque with no sealant step. For AN-plumbed systems that prefer inline placement or serviceable damper internals, Radium's FPD-R and FPD-XR inline and direct mount kits cover those architectures, sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x OEM style fuel pulse damper, 3\/8\" NPT male, thread paste pre-applied\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: fuel rails and fittings with a 3\/8\" NPT female port\u003c\/li\u003e\n\u003cli\u003eEFI systems experiencing idle surge, pressure oscillation, or lean spikes, especially with high flow injectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672690884675,"sku":"14-0128","price":61.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-14-0128-11974324191302_d3d0e665-1aa4-4390-873b-4f876e60612c.jpg?v=1786717071"},{"product_id":"radium-engineering-top-feed-fuel-rail-upgrade-2002-2014-subaru-wrx-sti-20-0567-02","title":"Radium Engineering Top Feed Fuel Rail Upgrade | 2002-2021 Subaru WRX\/STI (20-0567-02)","description":"\u003cp\u003e\u003cstrong\u003eThe EJ's factory fuel rails were never sized for the injectors a built Subaru actually runs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBig top feed injectors need a rail with volume and real ports behind them. The \u003cstrong\u003eRadium Engineering Top Feed Fuel Rail Upgrade\u003c\/strong\u003e for factory top feed EJ engines is a machined aluminum rail pair with three 8AN ORB threaded ports per rail, six total, ready for feed lines, a direct mount regulator, pulse dampers, or gauge adapters in whatever arrangement your system calls for. This is an upgrade rail, meaning your factory or OEM-equivalent injectors carry over. Thermal insulating spacers keep manifold heat out of the fuel. The rail your EJ fuel system should have started with.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStable fuel delivery across all four injectors with volume the factory rails lack\u003c\/li\u003e\n\u003cli\u003eReal plumbing freedom, with six 8AN ORB ports to configure feed, return, damping, and monitoring\u003c\/li\u003e\n\u003cli\u003eCooler fuel from thermal insulating spacers isolating the rails from the hot intake manifold\u003c\/li\u003e\n\u003cli\u003eA straight swap using your existing factory-size injectors\u003c\/li\u003e\n\u003cli\u003eClean integration with Radium's Subaru parallel plumbing kits and regulators\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMachined aluminum fuel rails for Subaru EJ engines with factory top feed injectors\u003c\/li\u003e\n\u003cli\u003eThree 8AN ORB threaded ports per rail (six total) accepting Radium adapters, direct mount regulators, dampers, and gauge fittings\u003c\/li\u003e\n\u003cli\u003e20-0567-02: 8AN ORB port machined in the underside center of each rail\u003c\/li\u003e\n\u003cli\u003eUpgrade-style rail: compatible with factory or OEM-equivalent injectors (same height and O-ring dimensions)\u003c\/li\u003e\n\u003cli\u003eThermal insulating spacers included to limit intake manifold heat transfer\u003c\/li\u003e\n\u003cli\u003eOEM 2-bolt flange regulator reusable with Radium adapter 20-0303 (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium builds two families of Subaru rails, and knowing which you need saves a return. Upgrade rails, like this one, fit engines that already run top feed injectors from the factory and reuse OEM or OEM-equivalent injectors; conversion rails are for switching side feed or air-assist engines to top feed and are a different product. Injector selection follows one hard rule: same height and same upper and lower O-ring diameters as OEM, and Radium defers to your injector supplier and tuner for brand and flow specifics. One clearance note decides between the two variants of this rail: the center lower port bulge on the 20-0567-02 can interfere with the early AVCS solenoids on the EJ207 and JDM EJ205, and those engines should use the top-port 20-0577-02 instead, which shares identical mounting and injector spacing but relocates the third port to the top of each rail. Certain JDM STI and EJ253 applications running the 20-0577-02 also require the 20-0372 adapter set. Fittings, plumbing, and injectors are sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Machined aluminum top feed fuel rails (port location per selected variant)\u003c\/li\u003e\n\u003cli\u003eThermal insulating spacers and mounting hardware\u003c\/li\u003e\n\u003cli\u003eFittings, plumbing, and injectors NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0567-02: 2002-2014 Subaru Impreza WRX (USDM), 2007-2014 WRX (JDM\/EDM), 2007-2021 WRX STI, 2006-2013 Forester XT, 2001-2003 Legacy GT (JDM), 2007-2012 Legacy GT and Outback XT, 2005-2006 Saab 9-2X Aero\u003c\/li\u003e\n\u003cli\u003e20-0577-02 (top port): 2001-2006 Impreza WRX (JDM\/EDM), 2001-2006 WRX STI (EDM), 2001-2002 WRX STI (JDM); with 20-0372 adapters: 2003-2006 WRX STI (JDM), 2004-2011 Impreza EJ253, 2005-2010 Forester EJ253, 2005-2012 Legacy EJ253, 2006-2009 Outback EJ253\u003c\/li\u003e\n\u003cli\u003eFactory top feed EJ engines only; EJ207 and JDM EJ205 with early AVCS require the 20-0577-02 top-port variant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672691081283,"sku":"20-0567-02","price":199.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0567-02-29454193786950_13dd32a2-95c6-4ddf-9688-70c6bb581368.jpg?v=1786717074"},{"product_id":"radium-fuel-rail-plumbing-kit-1994-2005-mazda-miata-20-0422-20-0423","title":"Radium Fuel Rail Plumbing Kit | 1994-2005 Mazda Miata (20-0422\/20-0423)","description":"\u003cp\u003e\u003cstrong\u003eThe Radium Miata rail has the ports; this kit is the plug-and-play bridge back to your factory fuel lines.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA bare aftermarket rail leaves you sourcing fittings and hose to meet the OEM system. The \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit\u003c\/strong\u003e for the 1994-2005 Miata closes that gap with a chassis-specific package for each generation: the 94-97 kit (20-0422) retains the OEM fuel pressure regulator and replaces the feed and return hoses, while the 99-05 kit (20-0423) retains the OEM fuel pulse damper and feed hose. Both bolt to the Radium 20-0369 fuel rail for a factory-clean connection with no custom fabrication. Pick your generation and plumb it once.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA plug-and-play rail install with the OEM lines meeting the Radium rail cleanly\u003c\/li\u003e\n\u003cli\u003eFactory pressure regulation retained, so the stock fuel map logic stays intact\u003c\/li\u003e\n\u003cli\u003eFresh hoses replacing decades-old rubber in the spots this kit renews\u003c\/li\u003e\n\u003cli\u003eAn afternoon install instead of a fitting-sourcing project\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0422 (1994-1997): retains the OEM fuel pressure regulator, replaces the fuel feed and return hoses\u003c\/li\u003e\n\u003cli\u003e20-0422 contents: 8AN ORB to 5\/16\" barb fitting, 8AN ORB to OEM FPR fitting (20-0301), 8AN ORB plug, and Radium 5\/16\" fuel hose\u003c\/li\u003e\n\u003cli\u003e20-0423 (1999-2005): retains the OEM fuel pulse damper and fuel feed hose\u003c\/li\u003e\n\u003cli\u003eBoth designed for the Radium 20-0369 Mazda 1.8L BP fuel rail (sold separately)\u003c\/li\u003e\n\u003cli\u003eAdapts the rail's 8AN ORB ports to the factory Miata fuel system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eEach generation gets its own logic because Mazda changed the fuel architecture between NA and NB. On 94-97 cars, the return-style system's OEM regulator carries over, with the kit's 20-0301 adapter mating it to the rail's ORB port, the barb fitting and fresh 5\/16\" hose handling the feed, and the ORB plug closing the unused port. On 99-05 cars, the factory pulse damper stays in service, screwing into the Radium rail through the kit's adapters while the OEM feed hose is reused. One clearance note straight from Radium for the 99-05 kit: if the car is equipped with EGR, it must be removed for the OEM fuel pulse damper to fit. Both kits assume the Radium rail is already on the engine and the rest of the factory fuel system is stock; builds moving to aftermarket regulators or larger feed lines should skip this kit and plumb the rail's 8AN ORB ports directly with Radium adapter fittings instead.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0422: 1x 8AN ORB to 5\/16\" barb fitting, 1x 8AN ORB to OEM FPR fitting, 1x 8AN ORB plug, Radium 5\/16\" fuel hose\u003c\/li\u003e\n\u003cli\u003e20-0423: adapters and hardware to retain the OEM pulse damper and feed hose on the Radium rail\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0422: 1994-1997 Mazda Miata (1.8L BP) with the Radium 20-0369 fuel rail\u003c\/li\u003e\n\u003cli\u003e20-0423: 1999-2005 Mazda MX-5 Miata (1.8L BP) with the Radium 20-0369 fuel rail; EGR removal required for OEM damper fitment if equipped\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"1994-1997 Miata","offer_id":43672691572803,"sku":"20-0422","price":47.45,"currency_code":"USD","in_stock":true},{"title":"1998-2005 Miata","offer_id":43672691605571,"sku":"20-0423","price":56.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0422-1994-1997-miata-14642147885126_835fe389-7ab8-4e33-8edf-d2800d360307.jpg?v=1786717079"},{"product_id":"radium-engineering-fuel-rail-honda-b-series-20-0370","title":"Radium Engineering Fuel Rail | Honda B-Series (20-0370-02)","description":"\u003cp\u003e\u003cstrong\u003eThirty years of B-series builds have proven one thing: the fuel rail should never be the part you compromise on.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail for the Honda B-Series\u003c\/strong\u003e brings modern architecture to the platform: CNC machined from 6061 aluminum with a large internal bore supporting all necessary engine power requirements, anodized and laser etched, with ports tapped for both 8AN ORB and 1\/8\" NPT. The 11mm ID injector bores match OEM, so factory or equivalent aftermarket injectors drop in, and the rail mounts on the OEM studs, nuts, and insulating spacers. A provision to reuse the OEM fuel pressure regulator keeps stock-plumbing builds simple, while the ORB ports open the door to Radium's DMR regulator and FPD-R damper. All fuels welcome, E85 included.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel volume on tap for every B-series power level, from bolt-on VTEC to boosted E85\u003c\/li\u003e\n\u003cli\u003eA rail that grows with the build: OEM FPR today, Radium DMR direct-mount regulator tomorrow\u003c\/li\u003e\n\u003cli\u003eInstrumentation ready, with the 1\/8\" NPT port hosting a gauge or sensor when the OEM FPR departs\u003c\/li\u003e\n\u003cli\u003eInjector seals that survive, with true 11mm OEM-spec bores\u003c\/li\u003e\n\u003cli\u003eA factory-clean mount on the original studs and insulating spacers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCNC machined 6061 aluminum with large internal bore; anodized and laser etched\u003c\/li\u003e\n\u003cli\u003ePorts tapped for 8AN ORB and 1\/8\" NPT\u003c\/li\u003e\n\u003cli\u003e11mm ID injector bores compatible with factory or OEM-equivalent aftermarket injectors\u003c\/li\u003e\n\u003cli\u003eProvision to reuse the OEM fuel pressure regulator; open 1\/8\" NPT port for sensors or a plug when not used\u003c\/li\u003e\n\u003cli\u003eAccepts the Radium DMR 8AN ORB direct-mount regulator and FPD-R 8AN ORB pulse damper (sold separately)\u003c\/li\u003e\n\u003cli\u003eMounts with OEM studs, nuts, and insulating spacers; all fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe dual-thread port layout is the flexibility play. ORB ports carry the fuel system: feed, return, a direct-mount DMR regulator in the end port, or an FPD-R damper in the top port. The NPT port carries the data, commonly a Radium 0-100 psi gauge, straight or on a 90 degree elbow for visibility. Injector guidance follows Radium's standard line: factory or OEM-equivalent only, with your injector supplier confirming dimensions, since Radium specifies nothing beyond 'OEM equivalent.' This is the rail-only kit with mounting hardware, ideal for custom fuel systems, and extra fittings, hose, and plumbing complete the install; Radium's optional OEM-configuration plumbing kit (sold separately) is the plug-and-play route for stock-style plumbing. Leave clearance around ports destined for regulators, gauges, or dampers.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Anodized, laser etched B-series fuel rail\u003c\/li\u003e\n\u003cli\u003eMounting hardware (reuses OEM studs, nuts, and insulating spacers)\u003c\/li\u003e\n\u003cli\u003eFittings, hose, and plumbing sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHonda DOHC B-Series engines (B16, B18, B20) in Civic, Del Sol, Integra, and swap applications\u003c\/li\u003e\n\u003cli\u003eFactory or OEM-equivalent fuel injectors\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672693080131,"sku":"20-0370-02","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0370-02-20-0370-02-fuel-rail-only-12018444468294.jpg?v=1786717098"},{"product_id":"radium-fuel-rail-toyota-2jz-ge-20-0371","title":"Radium Fuel Rail | Toyota 2JZ-GE (20-0371)","description":"\u003cp\u003e\u003cstrong\u003eThe non-turbo 2JZ has been the sleeper platform for years, and its fuel rail finally caught up.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoosted 2JZ-GE builds inherit the GTE's reputation with none of its rail options, since the GE's intake manifold architecture makes GTE rails incompatible. The \u003cstrong\u003eRadium Engineering Fuel Rail for the Toyota 2JZ-GE\u003c\/strong\u003e is the purpose-built answer: CNC machined from 6063 aluminum, black anodized and laser etched, with a large 8AN ORB internal bore supporting all horsepower requirements and four 8AN ORB ports for plumbing, regulators, gauges, and dampers. The 11mm injector bores accept every factory 2JZ-GE injector, VVT-i or not, air-assist or not, and included Radium injector seats unlock aftermarket injectors on air-assist manifolds. Bolt-on, on the factory mounting bosses. E85 ready.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRail volume and flow that never becomes the ceiling as the single turbo goes on\u003c\/li\u003e\n\u003cli\u003eFour real ports replacing the factory rail's fixed plumbing: both ends plus two on the bottom\u003c\/li\u003e\n\u003cli\u003eEvery factory injector dropping straight in, no modifications\u003c\/li\u003e\n\u003cli\u003eA documented aftermarket injector path even on air-assist manifolds, courtesy of the included seats\u003c\/li\u003e\n\u003cli\u003eAlcohol fuel confidence across E85 and beyond\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCNC machined 6063 aluminum, black anodized and laser etched, with large 8AN ORB internal bore\u003c\/li\u003e\n\u003cli\u003eFour 8AN ORB female ports (both ends and two bottom); front port unusable unless the OEM engine harness is modified\u003c\/li\u003e\n\u003cli\u003e11mm injector bores compatible with ALL factory 2JZ-GE injectors: VVT-i and non VVT-i, air-assist and non air-assist\u003c\/li\u003e\n\u003cli\u003e6x Radium injector seats included for running aftermarket injectors in air-assist manifolds\u003c\/li\u003e\n\u003cli\u003eReuses factory mounting bolts and plastic spacers for bolt-on installation\u003c\/li\u003e\n\u003cli\u003eCompatible with all fuel types including E85; NOT compatible with the 2JZ-GTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eInjector selection is where 2JZ-GE builds go sideways, and Radium documented the whole decision tree. Engines without Toyota's air-assist emissions equipment simply use OEM-equivalent aftermarket injectors per your injector supplier. Late model and California-spec engines with air-assist use a unique OEM injector the aftermarket never replicated, which is what the included Radium seats solve: install them in the air-assist manifold and run a 60mm aftermarket injector with 11mm upper and 14mm lower O-rings, with verified options including the Injector Dynamics ID1050\/1300\/1700\/2600-XDS-60-11-14 family. One trap to avoid: injectors built as 34mm bodies with top adapters reaching 60mm can interfere with the connector at the manifold bores, so use true 48mm-height injectors with the appropriate configuration instead. Regulator planning splits by year too, since early GE cars carry a rail-mounted FPR and will need an aftermarket regulator with this rail, while late models are returnless with the FPR in the tank. Verify the factory mounting bolts and spacers are present before starting, and leave clearance around ports destined for larger accessories.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized, laser etched aluminum fuel rail\u003c\/li\u003e\n\u003cli\u003e6x Injector seats for Toyota air-assist manifolds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eToyota 2JZ-GE (non-turbo) engines: VVT-i and non VVT-i, air-assist and non air-assist\u003c\/li\u003e\n\u003cli\u003eNOT compatible with the 2JZ-GTE (turbo)\u003c\/li\u003e\n\u003cli\u003eEarly rail-FPR cars require an aftermarket fuel pressure regulator\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672693211203,"sku":"20-0371","price":213.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0371-12085595013190_1a60d4dc-c95f-4b4c-a3d8-096481422858.jpg?v=1786717101"},{"product_id":"radium-engineering-fuel-rails-and-plumbing-kit-2009-2013-chevrolet-corvette-zr1-2012-2015-chevrolet-camaro-zl1-and-2009-2015-cadillac-cts-v-20-0362","title":"Radium Fuel Rails | 2009-2015 Corvette ZR1\/Camaro ZL1\/Cadillac CTS-V (20-0362)","description":"\u003cp\u003e\u003cstrong\u003eThe LS9 and LSA came supercharged from the factory; their fuel rails were the part GM left for you.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBlower V8s eat fuel system headroom fast, and the factory rails limit what the platform's famous appetite for boost can use. The \u003cstrong\u003eRadium Engineering Fuel Rails for GM LS9\/LSA Engines\u003c\/strong\u003e are the upgrade-rail answer: two rails CNC machined from 6061 aluminum, black anodized and laser etched, each carrying six 8AN ORB threaded ports for twelve in all. Polished stainless steel brackets attach to the factory rail mounting points with no vehicle modifications, the 14mm ID injector bores match OEM so factory injectors and clips carry over, and everything is compatible with all fuels including E85. Four 8AN ORB plugs are included for the end ports that sit too close to surrounding components to use.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRail volume and port access sized for what a supercharged V8 actually flows\u003c\/li\u003e\n\u003cli\u003eTwelve ports of plumbing freedom: feeds, crossovers, dampers, gauges, sensors\u003c\/li\u003e\n\u003cli\u003eA no-modification install on factory mounting points with stainless brackets\u003c\/li\u003e\n\u003cli\u003eFactory injectors and clips reused in true 14mm OEM-spec bores\u003c\/li\u003e\n\u003cli\u003eE85 confidence across the whole assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x fuel rails CNC machined from 6061 aluminum, black anodized, laser etched\u003c\/li\u003e\n\u003cli\u003eSix 8AN ORB ports per rail (12 total) for optional adapters and accessories\u003c\/li\u003e\n\u003cli\u003ePolished stainless steel mounting feet attach to factory rail mounting points; no vehicle modifications\u003c\/li\u003e\n\u003cli\u003e14mm ID injector bores compatible with factory injectors, with provisions for the factory injector clips\u003c\/li\u003e\n\u003cli\u003eUpgrade rail: OEM or OEM-equivalent injectors only (matching height and O-ring dimensions)\u003c\/li\u003e\n\u003cli\u003e4x 8AN ORB plugs included for end ports blocked by nearby components; all fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium classifies this as an upgrade rail, which sets the injector rule: factory injectors reinstall directly, and any upgrade must be OEM-equivalent in height and upper\/lower O-ring dimensions, with flow rates chosen by your tuner and dimensions confirmed by the injector manufacturer, since Radium makes no injector recommendations. The port count is the customization canvas, and Radium's advice is worth following literally: mock the rails up on the engine before purchasing adapter fittings and accessories, because surrounding engine components can interfere with access to some ports and the mock-up tells you which of the twelve are truly available on your particular car. For stock-style plumbing, Radium's separate LS9\/LSA plumbing kit adapts the OEM feed line via SAE quick connect into two 6AN PushLok lines supplying each rail, with plugs for everything unused; sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Black anodized laser etched aluminum fuel rails\u003c\/li\u003e\n\u003cli\u003e4x Fuel rail end fittings, 8AN ORB plugs\u003c\/li\u003e\n\u003cli\u003e4x Stainless steel mounting feet\u003c\/li\u003e\n\u003cli\u003e12x Stainless steel hardware\u003c\/li\u003e\n\u003cli\u003ePlumbing kit (20-0545) and additional adapter fittings sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2009-2013 Chevrolet Corvette ZR1 (LS9)\u003c\/li\u003e\n\u003cli\u003e2012-2015 Chevrolet Camaro ZL1 and 2009-2015 Cadillac CTS-V (LSA)\u003c\/li\u003e\n\u003cli\u003e2013-2017 HSV GTS, Clubsport R8, Maloo R8, GTSR, GTSR Maloo, GTSR W1, Senator Signature; 2014+ Equus Bass 770\u003c\/li\u003e\n\u003cli\u003eMock up rails before buying adapter fittings to verify port access\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComplete the System\u003c\/h3\u003e\n\u003cp\u003eThese rails are the engine-bay end of a full return-style conversion. Feeding them properly means addressing the tank too:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRail plumbing kit (20-0545):\u003c\/strong\u003e the plug and play way to feed both rails from the OEM feed line, with plugs for every unused ORB port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel hanger plumbing kit, CTS-V (20-1325-03 \/ 20-1325-05):\u003c\/strong\u003e converts a 2008-2015 CTS-V to a true return system feeding these rails, with the FPR on the LH rail and the feed on the RH rail. It requires these rails and the 20-0545 kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel hanger plumbing kit, Camaro (20-1326-03 \/ 20-1326-05):\u003c\/strong\u003e the 2010-2015 Camaro equivalent, with feed and FPR on opposite rails from the CTS-V routing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel pump hanger, 08-17 GM cars (20-1320 \/ 20-1322):\u003c\/strong\u003e the in-tank half, supporting one to three aftermarket pumps\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672693702723,"sku":"20-0362","price":427.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-29420034424902_9c10a32b-2c88-4a93-be48-0b94a09c7231.jpg?v=1786717113"},{"product_id":"radium-top-feed-primary-fuel-rail-conversion-kit-mazda-13b-re-rew-20-0445","title":"Radium Top Feed Primary Fuel Rail Conversion Kit | Mazda 13B-RE\/REW (20-1113)","description":"\u003cp\u003e\u003cstrong\u003eRotaries punish lean conditions instantly, and the primary injectors are the ones firing every single revolution.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Top Feed Primary Fuel Rail Conversion Kit for the Mazda 13B\u003c\/strong\u003e converts the primary injector positions in the rotor housings to modern top feed injection: a high flow rail for the 13B-RE and 13B-REW, anodized black for compatibility with all popular fuel types including E85, with a large internal bore supporting all necessary engine power requirements. Three 8AN ORB ports handle plumbing, the extra center port hosting accessories like the OEM fuel temperature sensor (via the 14-0421 adapter), a pressure transducer, or a Radium fuel pulse damper. Insulating phenolic spacers, washers, and stainless hardware prevent thermal energy from conducting into the fuel, and the included 14mm lower injector seats carry Viton O-rings suitable for boosted applications, compatible with or without the OEM diffusers in place. Injectors sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModern top feed injectors on the ports that fire every revolution of the rotors\u003c\/li\u003e\n\u003cli\u003eFueling stability for the boosted, E85 rotary builds that punish lean spikes hardest\u003c\/li\u003e\n\u003cli\u003eBoost-sealed injector bases from the Viton O-ring seats\u003c\/li\u003e\n\u003cli\u003eOEM fuel temperature sensor retained via the center port and 14-0421 adapter\u003c\/li\u003e\n\u003cli\u003eCooler fuel through phenolic isolation from housing heat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh flow primary rail for the 13B-RE and 13B-REW rotary engines; converts to top feed injection\u003c\/li\u003e\n\u003cli\u003eAnodized black aluminum, large internal bore, all fuels including E85\u003c\/li\u003e\n\u003cli\u003e3x 8AN ORB ports; center port for OEM fuel temp sensor (14-0421), pressure transducer, or pulse damper\u003c\/li\u003e\n\u003cli\u003e14mm lower injector seats included, Viton O-ring sealed, compatible with or without OEM diffusers\u003c\/li\u003e\n\u003cli\u003eInsulating phenolic spacers, washers, and stainless steel hardware included\u003c\/li\u003e\n\u003cli\u003eVerified injectors: Injector Dynamics ID1050\/ID1300\/ID1700\/ID2600-XDS-34-14-14 (NOT included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe conversion's engineering lives in the seats: the OEM primary injector counterbores measure 16mm while modern injector lower O-rings standardize on 14mm, so the machined aluminum seats press into the iron ports, seal on their own O-rings, and give top feed injectors a correct 14mm home, with the design specifically accommodating the OEM fuel injector diffusers either retained or removed. Injector selection is fully documented, with the ID XDS-34-14-14 family verified as direct fitments. Plumbing runs entirely through 8AN ORB, so feed, crossover to the secondary rail, and accessories all use Radium adapter fittings selected per your system; O-rings lubricated at every step per Radium's instructions. Pairs with the 20-0447 secondary rail for the complete REW conversion.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized high flow primary fuel rail (20-1113)\u003c\/li\u003e\n\u003cli\u003e14mm lower injector seats with Viton O-rings\u003c\/li\u003e\n\u003cli\u003eInsulating phenolic spacers and washers, stainless steel hardware\u003c\/li\u003e\n\u003cli\u003eFuel injectors and port fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1992-2002 Mazda RX-7 FD3S (13B-REW)\u003c\/li\u003e\n\u003cli\u003e1990-1995 Mazda\/Eunos Cosmo (13B-RE)\u003c\/li\u003e\n\u003cli\u003eVerified: ID1050\/1300\/1700\/2600-XDS-34-14-14 injectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672694784067,"sku":"20-1113","price":123.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0445-11953422499910_75d3bfe8-e55e-4559-b676-6aad0920a070.jpg?v=1786717126"},{"product_id":"radium-port-injection-kit-2017-honda-civic-type-r-20-0428","title":"Radium Port Injection Kit | 2017+ Honda Civic Type-R (20-0428)","description":"\u003cp\u003e\u003cstrong\u003eBig-turbo K20C1 builds hit the same wall every time: direct injection runs out of fuel before the engine runs out of air.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Type-R's DI system is brilliant at stock power and a hard ceiling above it, especially on E85. The \u003cstrong\u003eRadium Engineering Port Injection Kit for the Honda K20C1\u003c\/strong\u003e adds the second stage: a PIK adapter plate installs between the intake manifold and cylinder head carrying port injector positions, fed by a custom rail with a large 0.63\" internal bore, CNC machined from extruded 6063 aluminum with four 8AN ORB (3\/4\"-16) ports. Injectors sit at a specific angle ensuring proper spray into the intake ports, phenolic spacers and washers isolate the rail completely from cylinder head heat, and the OEM direct injection system stays untouched underneath. OEM Honda gaskets included.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe K20C1's DI fueling ceiling removed, with port injectors carrying the top end\u003c\/li\u003e\n\u003cli\u003eA genuine E85 big-power path for FK8 and FL5 builds\u003c\/li\u003e\n\u003cli\u003eCooler, more consistent rail temperatures via full phenolic thermal isolation\u003c\/li\u003e\n\u003cli\u003eCorrect atomization from purpose-angled injector positions, not an afterthought spacer\u003c\/li\u003e\n\u003cli\u003eStock DI drivability retained at idle and cruise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePIK adapter plate installs between the intake manifold and cylinder head\u003c\/li\u003e\n\u003cli\u003eCustom fuel rail: 0.63\" internal bore, CNC machined extruded 6063 aluminum, laser etched, 4x 8AN ORB (3\/4\"-16) ports\u003c\/li\u003e\n\u003cli\u003eInjector positions machined at a specific angle for proper spray into the intake ports\u003c\/li\u003e\n\u003cli\u003eMachined phenolic mounting spacers and washers completely isolate the rail from cylinder head heat\u003c\/li\u003e\n\u003cli\u003eDesigned for specific top feed injectors with matching upper and lower O-ring spacing\u003c\/li\u003e\n\u003cli\u003eDoes NOT replace the OEM direct injection system; all fuels including E85; OEM Honda gaskets included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eOne packaging note from Radium deserves attention before ordering fittings: the two top fuel rail ports must be plugged with Radium's 14-0150 8AN ORB plugs unless the plastic OEM wiring harness carrier is modified, which leaves the remaining ports carrying feed and accessory duty on unmodified cars. System design is the builder's job, with port injectors (top feed, correct O-ring spacing per Radium's spec), an auxiliary fuel supply, and a controller or ECU strategy for the second stage all selected separately, and the 8AN ORB ports accepting the regulator, damper, and gauge adapters the architecture calls for. The kit's role is the hard part: precision-machined injector geometry, sealed manifold interface, and a rail that will not become the next restriction.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x PIK adapter plate\u003c\/li\u003e\n\u003cli\u003e1x Custom port injection fuel rail (4x 8AN ORB ports)\u003c\/li\u003e\n\u003cli\u003eFuel rail mounting hardware with phenolic spacers and washers\u003c\/li\u003e\n\u003cli\u003eOEM Honda gaskets\u003c\/li\u003e\n\u003cli\u003eInjectors, fittings, plugs (14-0150), plumbing, and controller NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2017-2021 Honda Civic Type-R FK8 (K20C1)\u003c\/li\u003e\n\u003cli\u003e2023+ Honda Civic Type-R FL5 (K20C1)\u003c\/li\u003e\n\u003cli\u003eTop ports require 14-0150 plugs unless the OEM harness carrier is modified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeeding the Second Stage\u003c\/h3\u003e\n\u003cp\u003ePort injection needs its own regulated supply, and on the FK8 that problem is already solved upstream. The Radium fuel hanger plumbing kit for the 2017-2021 Civic Type-R (20-1085-03 \/ 20-1085-05) uses a dual fuel pressure regulator with two independent outputs: the black knob regulates the OEM direct injection low pressure feed, and the green knob governs a second regulated outlet that ships plugged from the factory, reserved for exactly this kit. Connecting the two takes an 8AN ORB DFPR adapter fitting and a fuel line.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel hanger plumbing kit, FK8 (20-1085-03 \/ 20-1085-05):\u003c\/strong\u003e DFPR, gauge, filter, and full tank-to-firewall plumbing with the port injection outlet built in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel pump hanger, 2016+ Civic (20-1080 \/ 20-1082):\u003c\/strong\u003e the in-tank supply supporting one to three aftermarket pumps\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672694816835,"sku":"20-0428","price":284.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0428-12005573754950_2a69f50e-a627-40d9-9d4d-21500f4be03f.jpg?v=1786717127"},{"product_id":"radium-engineering-fuel-rail-2001-2005-honda-civic-si-and-2002-2006-acura-rsx-type-s-20-0230-02","title":"Radium Engineering Fuel Rail | 2001-2005 Honda Civic Si and 2002-2006 Acura RSX Type-S (20-0230-02)","description":"\u003cp\u003e\u003cstrong\u003eEvery K-series intake manifold swap eventually asks the same question: is the fuel rail keeping up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail for the Honda K-Series\u003c\/strong\u003e answers it for good: a large 0.69\" internal bore supporting all necessary engine power requirements, CNC machined from extruded 6063 aluminum, media blasted, black anodized, and laser etched. This is an upgrade rail, meaning the 14mm ID injector bores match OEM so factory injectors reinstall directly, and it fits every OEM Honda K-series intake manifold (RBC, RBB, RRC, PRB, and more): if the manifold fits the OEM rail, it fits this one. Phenolic thermal insulating washers isolate the rail from manifold heat, stainless hardware is included, and all fuels including E85 are welcome. Not compatible with the direct-injected K20C1.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRail volume that stays ahead of the injectors on boosted and high-rpm K builds\u003c\/li\u003e\n\u003cli\u003eUniversal manifold compatibility across the RBC\/RBB\/RRC\/PRB alphabet\u003c\/li\u003e\n\u003cli\u003eCooler fuel courtesy of phenolic washers thermally isolating the rail from the manifold\u003c\/li\u003e\n\u003cli\u003eFactory injectors reinstalled without drama in true 14mm OEM-spec bores\u003c\/li\u003e\n\u003cli\u003ePort flexibility for a damper, gauge, or custom plumbing as the build evolves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 0.69\" internal bore; CNC machined extruded 6063 aluminum, media blasted, black anodized, laser etched\u003c\/li\u003e\n\u003cli\u003eUpgrade rail: 14mm ID injector bores accept factory or OEM-equivalent injectors (same height, matching upper and lower O-ring dimensions)\u003c\/li\u003e\n\u003cli\u003eCompatible with all OEM Honda K-series intake manifolds (RBC, RBB, RRC, PRB, etc.)\u003c\/li\u003e\n\u003cli\u003eReuses OEM insulating spacers (Honda 16638-PNA-000); phenolic thermal insulating washers included\u003c\/li\u003e\n\u003cli\u003eStainless steel mounting hardware; all fuel types including E85\u003c\/li\u003e\n\u003cli\u003eNOT compatible with the direct-injected K20C1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium's rail taxonomy matters here: upgrade rails keep the OEM injector interface, while top feed conversion rails change injector styles, and this K-series rail is firmly the former, so injector changes must stay OEM-equivalent in height and O-ring dimensions, with flow rates chosen by your tuner and dimensions confirmed by the injector manufacturer. The rail-only kit suits custom plumbing; for the stock feed line, Radium's plumbing kit (20-0230-PK, sold separately) adds the extended SAE quick connect that clears the OEM coolant hose plus port plugs. Installation is documented down to the torque spec: OEM spacers position the assembly, and the included M8 hardware torques to 10 ft-lbs. Pre-lubricate every O-ring, prime with key cycles, and leak-check before and after first start.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized, laser etched K-series fuel rail\u003c\/li\u003e\n\u003cli\u003eStainless steel mounting hardware\u003c\/li\u003e\n\u003cli\u003ePhenolic thermal insulating washers\u003c\/li\u003e\n\u003cli\u003ePlumbing kit 20-0230-PK sold separately for factory feed line connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2001-2005 Honda Civic Si (EP3) and 2002-2006 Acura RSX \/ RSX Type-S (K20)\u003c\/li\u003e\n\u003cli\u003eAll K-series engines with port-injection OEM manifolds (K20\/K24); K-swap applications\u003c\/li\u003e\n\u003cli\u003eNOT compatible with the direct-injected K20C1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672694915139,"sku":"20-0230-02","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0230-02-29454206763078_3737e811-3770-49d9-a87b-1b2b772589c7.jpg?v=1786717129"},{"product_id":"radium-engineering-top-feed-fuel-rail-kit-1992-2002-toyota-supra-20-0215","title":"Radium Engineering Top Feed Fuel Rail Kit | 1992-2002 Toyota Supra (20-0215)","description":"\u003cp\u003e\u003cstrong\u003eThe 2JZ-GTE will make legendary power, but not through its factory side feed injectors.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSide feed injector development ended years ago while the 2JZ platform's power ambitions never did. The \u003cstrong\u003eRadium Engineering Top Feed Fuel Rail Conversion Kit for the Toyota 2JZ-GTE\u003c\/strong\u003e ends the mismatch: compatible with all 2JZ-GTE engines, VVTi and non-VVTi, on the OEM intake manifold, it converts the factory side feed setup to top feed and opens the modern 14mm O-ring injector world. The extruded rail carries a large 0.69\" internal bore in custom 6063 aluminum, media blasted, black anodized, and laser etched, with all ports tapped 8AN ORB (3\/4\"-16). Two sets of anodized mounting feet handle 48mm and 34mm injector heights, and the included press-fit billet injector seats carry O-rings preventing boost pressure leaks. All fuels, E85 included.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe complete modern injector catalog available to the platform that deserves it most\u003c\/li\u003e\n\u003cli\u003eRail volume that never limits a single-turbo build, with the 0.69\" bore feeding all six evenly\u003c\/li\u003e\n\u003cli\u003eBoost-sealed injector seats, with O-rings at the press-fit interface where leaks would hide\u003c\/li\u003e\n\u003cli\u003eFour 8AN ORB ports plumbing feed, return, dampers, and sensors any way the system is drawn\u003c\/li\u003e\n\u003cli\u003eOEM regulator and factory feed line reuse paths documented, not improvised\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with all Toyota 2JZ-GTE engines (VVTi and non-VVTi) using the OEM intake manifold\u003c\/li\u003e\n\u003cli\u003eConverts OEM side feed injection to top feed; injectors NOT included, must have 14mm upper and lower O-rings\u003c\/li\u003e\n\u003cli\u003e0.69\" internal bore, CNC machined custom 6063 aluminum, media blasted, black anodized, laser etched\u003c\/li\u003e\n\u003cli\u003eAll ports tapped 8AN ORB (3\/4\"-16 female)\u003c\/li\u003e\n\u003cli\u003eTwo sets of black anodized mounting feet for 48mm or 34mm injector heights, reusing OEM Toyota thermal insulating spacers (90561-08009)\u003c\/li\u003e\n\u003cli\u003e20-0216-06 press-fit billet injector seat kit included, O-ring sealed against boost leaks; all fuels including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium documents the OEM-integration paths that usually require forum archaeology. To reuse the factory fuel pressure regulator, the 20-0301 adapter fitting mounts it to the rail; note that securing it to the front port requires modifying the Traction Control TPS sensor when tall spacers are used, and rear-port mounting needs a firewall clearance check. To keep the factory feed line, the 14-0285 8AN ORB to M12x1.25 female fitting secures to the rear port and reuses the OEM banjo bolt. Injector fitment is verified by height: 48mm and 34mm short-height injectors with 14mm O-rings fit directly using the appropriate feet, with the Injector Dynamics catalog among the documented direct fitments. The mounting feet secure the rail to the manifold through Toyota's own thermal spacers, keeping the factory heat isolation strategy. Fittings and injectors sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized laser etched aluminum fuel rail\u003c\/li\u003e\n\u003cli\u003eBlack anodized aluminum mounting feet, tall and short sets\u003c\/li\u003e\n\u003cli\u003e4x Stainless steel mounting feet bolts\u003c\/li\u003e\n\u003cli\u003e1x 20-0216-06 Toyota injector seat kit (6 cylinder) with O-rings\u003c\/li\u003e\n\u003cli\u003eInjectors, adapter fittings (20-0301, 14-0285), and plumbing NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1992-2002 Toyota Supra JZA80 and all 2JZ-GTE engines (VVTi and non-VVTi) with the OEM intake manifold\u003c\/li\u003e\n\u003cli\u003e2JZ-GTE swap applications retaining the factory manifold\u003c\/li\u003e\n\u003cli\u003eInjectors with 14mm upper and lower O-rings, 48mm or 34mm heights\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672694947907,"sku":"20-0215","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0215-29454203650118_86bdda79-7b39-459d-ab15-133385bedd6d.jpg?v=1786717130"},{"product_id":"radium-engineering-fuel-rail-kit-2013-2021-subaru-brz-scion-fr-s-toyota-86-20-0111-02","title":"Radium Engineering Fuel Rail Kit | 2013-2021 Subaru BRZ\/Scion FR-S\/Toyota 86 (20-0111-02)","description":"\u003cp\u003e\u003cstrong\u003eThe FA20's port injection side is half its fueling story, and the factory rails cap that half.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe twin-injection boxer feeds each bank through its own port rail, and boosted builds outgrow the OEM pair fast. The \u003cstrong\u003eRadium Engineering Fuel Rail Kit for the BRZ \/ FR-S \/ 86\u003c\/strong\u003e replaces both: identical left and right rails manufactured with a large 0.69\" internal bore supporting all necessary engine power requirements, anodized aluminum bodies with matching mounting brackets. End ports are tapped 8AN ORB (3\/4\"-16) and each rail carries a 6AN ORB (9\/16\"-18) center port, opening a custom high-flow fuel delivery system on a platform that arrives with none. This is the rails-and-brackets kit for builders running their own lines; fittings sold separately, all fuels including E85.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePort-injection fueling headroom for the turbo and supercharger kits the platform attracts\u003c\/li\u003e\n\u003cli\u003eA custom plumbing canvas with 8AN ends and 6AN centers on both rails\u003c\/li\u003e\n\u003cli\u003eEven delivery across both banks through matched 0.69\" bores\u003c\/li\u003e\n\u003cli\u003eFactory injectors reinstalled directly in OEM-spec bores\u003c\/li\u003e\n\u003cli\u003eCompatibility spanning FA20 and 2022+ FA24 cars alike\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x identical fuel rails, 0.69\" internal bore, anodized aluminum with mounting brackets\u003c\/li\u003e\n\u003cli\u003eEnd ports tapped 8AN ORB (3\/4\"-16); center port per rail tapped 6AN ORB (9\/16\"-18)\u003c\/li\u003e\n\u003cli\u003eUpgrade rail: OEM injectors reuse directly; upgrades must be OEM-equivalent in height and O-ring dimensions and styles\u003c\/li\u003e\n\u003cli\u003eAccepts Radium 8AN ORB direct mount regulators and fuel pulse dampers in the ports\u003c\/li\u003e\n\u003cli\u003eRails and brackets only; fittings and adapters sold separately for custom plumbing\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium's upgrade-rail rule applies: the OEM port injectors carry over, and any injector change must match factory height and O-ring specifications, with flow rates chosen by your tuner and dimensions confirmed with the injector manufacturer. The port architecture maps to Radium's ecosystem, with 8AN ORB adapters carrying feed and crossover, the end ports accepting a DMR direct mount regulator, and the 6AN centers hosting dampers or gauge adapters. Two companion notes worth planning around: the 20-0111-PK plumbing kit (sold separately) handles factory feed line hookup for stock-style installs, and on 2012-2021 cars Radium's DI ECU mount eliminates cutting the heavy gauge steel fuel rail shields during plumbing, a mount that is neither compatible with nor needed on 2022+ models. Fitment spans the FA20 cars (2013-2021 BRZ, FR-S, 86) and the FA24 2022+ BRZ and GR86.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Anodized aluminum fuel rails (left\/right identical)\u003c\/li\u003e\n\u003cli\u003e2x Mounting brackets\u003c\/li\u003e\n\u003cli\u003eFittings, adapters, and plumbing kit (20-0111-PK) sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2013-2021 Subaru BRZ, Scion FR-S, Toyota 86 (FA20)\u003c\/li\u003e\n\u003cli\u003e2022+ Subaru BRZ and Toyota GR86 (FA24)\u003c\/li\u003e\n\u003cli\u003eOEM or OEM-equivalent injectors only; DI ECU mount applies to 12-21 cars only\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695046211,"sku":"20-0111-02","price":170.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0111-02-29454190411846_34ce8b54-0017-44b0-a1ac-b55f42e923eb.jpg?v=1786717134"},{"product_id":"radium-engineering-subaru-ej-top-feed-fuel-rail-conversion-kit-2004-2014-subaru-wrx-and-2004-2021-subaru-wrx-sti-20-0568-02","title":"Radium Subaru EJ Top Feed Fuel Rail Conversion Kit | 2004-2006 Subaru WRX STI (20-0568-02)","description":"\u003cp\u003e\u003cstrong\u003eSide feed injectors capped the EJ257's future the day it left the factory; this kit removes the cap.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Subaru EJ Top Feed Fuel Rail Conversion Kit\u003c\/strong\u003e converts the OEM side feed injector setup to top feed, opening the high-flow injector catalog the side feed world never got. The rails are CNC machined from solid 6061 aluminum, black anodized and laser engraved, with large internal bores supporting all necessary engine power requirements and 14mm ID injector bores. Four billet anodized injector seats provide sealed receptacles for top feed injectors with 14mm lower O-rings, each rail carries three 8AN ORB threaded ports (6 total), and press-fit phenolic spacers thermally insulate against intake manifold heat transfer. All fuels including E85. Injectors sold separately, and one warning drives the whole purchase: do NOT buy \"WRX fitment\" injectors for this kit.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe full modern top feed injector catalog unlocked on side feed EJ engines\u003c\/li\u003e\n\u003cli\u003eFueling headroom for the big-turbo and E85 builds the EJ257 was destined for\u003c\/li\u003e\n\u003cli\u003eBoost-sealed injector bases via the billet anodized seat receptacles\u003c\/li\u003e\n\u003cli\u003eSix 8AN ORB ports carrying feed, crossover, regulator, damper, and gauge duty\u003c\/li\u003e\n\u003cli\u003eCooler fuel through press-fit phenolic isolation from manifold heat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConverts the OEM side feed injector setup to top feed; high-flow injectors NOT included\u003c\/li\u003e\n\u003cli\u003eCNC machined solid 6061 aluminum rails, black anodized, laser engraved, large internal bore\u003c\/li\u003e\n\u003cli\u003e14mm ID injector bores; 4x billet anodized, laser etched injector seats for injectors with 14mm lower O-rings\u003c\/li\u003e\n\u003cli\u003e3x 8AN ORB threaded ports per rail (6 total)\u003c\/li\u003e\n\u003cli\u003ePress-fit phenolic spacers insulate intake manifold heat transfer; stainless hardware\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe injector warning deserves its own paragraph, because it catches builders constantly: \"WRX fitment\" and \"WRX top feed\" injectors are made for the factory top feed cars' geometry and do NOT fit this conversion, so injector selection follows the kit's actual specification, a top feed injector with a 14mm lower O-ring seating into the Radium billet seats, with flow rates from your tuner and exact dimensions confirmed with the injector manufacturer. Fitment follows the injector style rather than the badge: USDM 2004-2006 Impreza WRX STI, 2005-2006 Legacy GT and Outback XT, and 2004-2005 Forester XT that came with side feed injectors, with country of origin determining which engines qualify. Port fittings are selected per your plumbing plan, and Radium's standing clearance advice applies around ports destined for regulators or dampers.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Black anodized, laser engraved 6061 aluminum top feed conversion rails\u003c\/li\u003e\n\u003cli\u003e4x Billet anodized, laser etched injector seats (14mm lower O-ring receptacles)\u003c\/li\u003e\n\u003cli\u003ePress-fit phenolic thermal spacers\u003c\/li\u003e\n\u003cli\u003eStainless steel hardware\u003c\/li\u003e\n\u003cli\u003eInjectors and port fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2004-2006 Subaru Impreza WRX STI (USDM, side feed injector cars)\u003c\/li\u003e\n\u003cli\u003e2005-2006 Legacy GT and Outback XT; 2004-2005 Forester XT (side feed injector cars)\u003c\/li\u003e\n\u003cli\u003eTop feed injectors with 14mm lower O-rings; do NOT purchase \"WRX fitment\" injectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695177283,"sku":"20-0568-02","price":218.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-0568-02n_0a2303c7-5fd3-4187-a616-fa9b2fa433f0.jpg?v=1786717137"},{"product_id":"radium-engineering-top-feed-fuel-rail-conversion-nissan-ka24de-20-0457","title":"Radium Engineering Top Feed Fuel Rail Conversion | Nissan KA24DE (20-0957)","description":"\u003cp\u003e\u003cstrong\u003eThe KA24DE's side feed injectors are the wall between a turbo 240SX and the injectors it actually needs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSide feed injector selection stalled a decade ago while top feed development never stopped, and every big-power KA hits that shelf. The \u003cstrong\u003eRadium Engineering Top Feed Fuel Rail Conversion for the Nissan KA24DE\u003c\/strong\u003e knocks the wall down: a direct bolt-on for all twin cam KA24DE engines, CNC machined from solid 6061 aluminum, black anodized, with a large 0.69\" internal bore supporting all necessary power levels. The rail converts the OEM side feed setup to top feed, opening the entire modern 14mm O-ring injector catalog, with two spacer sets in the kit supporting both 48mm and 34mm injector heights. Three 8AN ORB ports (ends and bottom) plus a 1\/8\" NPT top port handle plumbing and instrumentation. All fuels including E85.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe full modern injector catalog unlocked, from mild upgrades to 2600cc flow\u003c\/li\u003e\n\u003cli\u003eRail volume that never becomes the restriction, with the 0.69\" bore feeding all four cylinders evenly\u003c\/li\u003e\n\u003cli\u003eFueling stability under high pressure where the restrictive OEM rail falls behind\u003c\/li\u003e\n\u003cli\u003eCooler rail temperatures via phenolic spacers resisting heat transfer from the head\u003c\/li\u003e\n\u003cli\u003ePorts for the regulator, damper, gauge, or sender the build calls for\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect bolt-on for all twin cam Nissan KA24DE engines; converts side feed to top feed injection\u003c\/li\u003e\n\u003cli\u003e0.69\" internal bore, CNC machined solid 6061 aluminum, black anodized\u003c\/li\u003e\n\u003cli\u003eAccepts high flow injectors with 14mm O-rings top and bottom (injectors MUST have 14mm O-rings; not included)\u003c\/li\u003e\n\u003cli\u003eTwo phenolic spacer sets included, fitting 48mm (tall spacers, long bolts) or 34mm (short spacers) injector heights\u003c\/li\u003e\n\u003cli\u003e4x Radium 30mm injector seats (20-0160) included\u003c\/li\u003e\n\u003cli\u003e3x 8AN ORB ports (both ends and bottom) plus 1x 1\/8\" NPT top port; all fuels including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eInjector fitment is fully documented, which is rare and valuable in conversion rails. With the tall spacers and longer bolts, verified direct fitments include the Injector Dynamics ID1050, ID1300, ID1700, and ID2600 in XDS-48-14-14 configuration, and the short spacer set covers 34mm-body injectors with the same 14mm O-ring requirement. The phenolic spacers do double duty, setting injector height while thermally isolating the rail from the head. One manifold note from Radium: on an Xcessive intake manifold, the rail may need shimming to proper height depending on injectors, and the included aluminum injector seats go unused. Plumbing runs through the 8AN ORB ports with Radium adapter fittings, and the NPT port takes a gauge or sender with PTFE paste. Injectors and fittings sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized aluminum top feed fuel rail\u003c\/li\u003e\n\u003cli\u003e2x Phenolic mounting bolt spacers short, 2x tall, 2x phenolic washers\u003c\/li\u003e\n\u003cli\u003e4x Radium 20-0160 30mm injector seats\u003c\/li\u003e\n\u003cli\u003e2x Stainless mounting bolts short, 2x tall\u003c\/li\u003e\n\u003cli\u003eInjectors and adapter fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAll twin cam Nissan KA24DE engines: 1991-1998 240SX S13\/S14 and KA swaps\u003c\/li\u003e\n\u003cli\u003eInjectors with 14mm upper and lower O-rings, 48mm or 34mm heights (ID1050\/1300\/1700\/2600-XDS-48-14-14 verified with tall spacers)\u003c\/li\u003e\n\u003cli\u003eXcessive manifolds: may require shimming; included seats unused\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695275587,"sku":"20-0957","price":208.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0457-13693874241606_e58f67ba-a681-4247-be10-848f230deece.jpg?v=1786717139"},{"product_id":"radium-engineering-fuel-rail-2006-2009-honda-s2000-20-0391","title":"Radium Engineering Fuel Rail | 2006-2009 Honda S2000 (20-0391)","description":"\u003cp\u003e\u003cstrong\u003eThe AP2's F22C revs to the moon; its fuel rail should not be the part working hardest to keep up.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail for the 2006-2009 Honda S2000\u003c\/strong\u003e is the upgrade-rail treatment for the late AP2: a large 0.69\" diameter internal bore supporting all necessary engine power requirements, CNC machined aluminum, anodized and laser etched. As a Radium upgrade rail, the injector interface matches OEM, so factory injectors reinstall directly and any injector upgrade must be OEM-equivalent in height and O-ring dimensions. Boosted and built F22C engines get the rail volume and port access the factory part never offered.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConsistent fueling to 8,000 rpm and beyond, with the 0.69\" bore holding pressure steady across all four injectors\u003c\/li\u003e\n\u003cli\u003eRail headroom ready for the supercharger or turbo the S2000 aftermarket loves\u003c\/li\u003e\n\u003cli\u003eFactory injectors reinstalled without drama in OEM-spec bores\u003c\/li\u003e\n\u003cli\u003ePort access for the plumbing, damper, or gauge the build calls for\u003c\/li\u003e\n\u003cli\u003eHardware that matches the precision of the engine it feeds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 0.69\" diameter internal bore supporting all necessary engine power requirements\u003c\/li\u003e\n\u003cli\u003eCNC machined aluminum, anodized and laser etched\u003c\/li\u003e\n\u003cli\u003eUpgrade rail: OEM injector interface, factory or OEM-equivalent injectors only (matching height and upper\/lower O-ring dimensions and styles)\u003c\/li\u003e\n\u003cli\u003eApplication-specific for the 2006-2009 S2000 (F22C, drive-by-wire AP2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium's rail taxonomy draws a clean line, with upgrade rails preserving the OEM injector interface and top feed conversion rails changing injector styles entirely, and this S2000 rail is the former: injector upgrades must match OEM height and O-ring diameters and styles, with flow rates chosen by your tuner and exact part numbers confirmed with the injector manufacturer, since Radium makes no injector recommendations. The 2006-2009 model years matter here because the late AP2's fuel system differs from earlier cars, which use Radium's separate 00-05 rail. Plumbing completes through Radium's adapter fittings sized to your lines, and the usual O-ring disciplines apply: lubricate before installation, no sealant on ORB threads.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Anodized, laser etched aluminum fuel rail\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003cli\u003eInjectors and adapter fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2006-2009 Honda S2000 (F22C, AP2)\u003c\/li\u003e\n\u003cli\u003eFactory or OEM-equivalent injectors only\u003c\/li\u003e\n\u003cli\u003eEarlier 2000-2005 cars use Radium's separate S2000 00-05 rail\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695308355,"sku":"20-0391-02","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0391-02-fuel-rail-only-28318275829830_39df4e52-152e-4567-a549-202450254ac3.jpg?v=1786717141"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-honda-b-series-20-0370-pk","title":"Radium Engineering Fuel Rail Plumbing Kit | Honda B\/D\/F\/H-Series (20-1270-PK)","description":"\u003cp\u003e\u003cstrong\u003eThe Radium rail speaks ORB; your Honda's factory plumbing does not, and this kit translates.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for Honda B, D, F and H-Series engines\u003c\/strong\u003e is the OEM-configuration companion to Radium's Honda fuel rails: the fittings and components to connect the Radium rail to the factory Honda fuel lines and retain the stock-style fuel system layout, turning a custom-application rail into a plug-and-play upgrade. Bolt the rail on, install this kit, and the factory plumbing carries on exactly as Honda routed it, now feeding a rail with real headroom.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA same-day rail upgrade with no custom line fabrication\u003c\/li\u003e\n\u003cli\u003eFactory fuel routing preserved, including the OEM regulator provision\u003c\/li\u003e\n\u003cli\u003eA clean path to later upgrades, since the rail's remaining ORB ports stay available\u003c\/li\u003e\n\u003cli\u003eConfidence the fittings match, because Radium built the kit for its own rails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM-configuration plumbing components for Radium Honda fuel rails, including the B-series rail (20-0370-02, sold separately)\u003c\/li\u003e\n\u003cli\u003eCovers Honda B, D, F and H-Series applications\u003c\/li\u003e\n\u003cli\u003eConnects the rail's ports to the factory Honda fuel lines\u003c\/li\u003e\n\u003cli\u003eRetains the stock-style fuel system layout including the OEM FPR provision\u003c\/li\u003e\n\u003cli\u003eCompatible with all fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium sells its Honda rails bare because custom builds want them that way, but most street cars just want the better rail with the plumbing they already have, and that is this kit's entire job. It pairs with the rail's dual-thread port layout, adapting the ORB architecture back to Honda's factory connections so no line fabrication enters the picture. Builds heading toward an aftermarket regulator, larger feed lines, or full AN plumbing should skip this kit and select Radium ORB adapter fittings for the routing they actually plan to run. Rail sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM-configuration plumbing components for Radium Honda fuel rails (20-1270-PK)\u003c\/li\u003e\n\u003cli\u003eFuel rail NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHonda B, D, F and H-Series engines running a Radium fuel rail with factory fuel lines\u003c\/li\u003e\n\u003cli\u003eStock-style fuel system layouts; all fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695373891,"sku":"20-1270-PK","price":85.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0370-pk-31184547250246_7e83b711-9a13-415d-b910-87637217c419.jpg?v=1786717141"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-2020-2021-toyota-supra-3-0-20-0753-pk","title":"Radium Engineering Fuel Rail Plumbing Kit | 2020-2026 Toyota Supra 3.0 (20-0753-PK)","description":"\u003cp\u003e\u003cstrong\u003eTen minutes stands between the Supra PIK's rail and the factory fuel line.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the MK5 Supra\u003c\/strong\u003e permits the OEM low pressure fuel feed hose to be connected to the rear of the port injection fuel rail, and it installs in under 10 minutes: an SAE quick connect tee PTFE hose assembly taps the factory line, a preassembled 6AN PTFE fuel hose carries feed to the rail, an 8AN ORB to 6AN male fitting lands it, and an 8AN ORB plug seals the unused port. The fast, factory-line path for completing a Radium B58 PIK installation.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe PIK plumbed and running the same afternoon it was installed\u003c\/li\u003e\n\u003cli\u003eFactory fuel supply tapped cleanly through a proper quick connect tee, no line cutting\u003c\/li\u003e\n\u003cli\u003eAll-fuel confidence from PTFE hose, E85 included\u003c\/li\u003e\n\u003cli\u003eThe unused rail port properly plugged with ORB hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConnects the OEM low pressure fuel feed hose to the rear of the Radium port injection rail\u003c\/li\u003e\n\u003cli\u003eInstalls in under 10 minutes\u003c\/li\u003e\n\u003cli\u003eSAE quick connect tee PTFE hose assembly, preassembled 6AN PTFE fuel hose\u003c\/li\u003e\n\u003cli\u003e8AN ORB to 6AN male fitting and 8AN ORB plug included\u003c\/li\u003e\n\u003cli\u003eFor the Radium MK5 Supra Port Injection Kit (20-0753, sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThis kit serves the shared-supply architecture, where the port injectors drink from the same low pressure feed as the OEM system, which suits a wide band of builds and keeps installation trivially fast. Radium's own guidance marks the fork in the road: if using an independent port injection fuel system, built around the Radium 20-0760 fuel pump hanger with its own regulated supply, this plumbing kit would not be required, since that architecture feeds the rail from its own pump. Choose the path that matches the horsepower plan, and for the shared-feed majority, this kit is the ten-minute answer. PIK sold separately; O-rings lubricated at installation as always.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x SAE quick connect tee PTFE hose assembly\u003c\/li\u003e\n\u003cli\u003e1x Preassembled 6AN PTFE fuel hose\u003c\/li\u003e\n\u003cli\u003e1x 8AN ORB to 6AN male fitting\u003c\/li\u003e\n\u003cli\u003e1x 8AN ORB plug\u003c\/li\u003e\n\u003cli\u003ePort injection kit (20-0753) NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2020+ Toyota GR Supra 3.0 (B58) running the Radium port injection kit\u003c\/li\u003e\n\u003cli\u003eNot required with independent port injection fuel systems (Radium 20-0760 hanger)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695701571,"sku":"20-0753-PK","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0753-pk-28571617493062_327b697a-d746-4e6d-85b2-d0a7b304114d.jpg?v=1786717150"},{"product_id":"radium-engineering-fuel-rails-nissan-vq35de-vq35hr-vq37vhr-20-0458","title":"Radium Engineering Fuel Rails | Nissan VQ35 (20-0458)","description":"\u003cp\u003e\u003cstrong\u003eOne rail kit covers the entire VQ dynasty, from the 350Z's DE to the 370Z's VHR.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rails for Nissan VQ Engines\u003c\/strong\u003e are confirmed compatible with the VQ35DE, VQ35HR, and VQ37VHR: two rails machined from 6061 aluminum, black anodized for compatibility with all popular fuel types including E85, each carrying a large internal bore supporting all necessary engine power requirements and four 8AN ORB ports (2 ends, 2 bottom) for eight total. The 14mm injector bores accept OEM injectors and any aftermarket injectors with OEM VQ fitment, unique stainless steel mounts permit fitment across all the VQ engines, and OEM injector clips reuse on the VQ35DE and VQ35HR. This kit is rails and mounting hardware only, ideal for custom plumbing; the engine-specific plumbing kits (sold separately) make it plug and play.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel delivery headroom for boosted VQ builds across three engine generations\u003c\/li\u003e\n\u003cli\u003eEight 8AN ORB ports opening pressure transducers, pulse dampers, and custom plumbing configurations\u003c\/li\u003e\n\u003cli\u003eFactory injectors and clips carrying over on DE and HR engines\u003c\/li\u003e\n\u003cli\u003eOne confirmed-fitment kit spanning 350Z, 370Z, G35, G37, Q50, and Q60 platforms\u003c\/li\u003e\n\u003cli\u003eE85 confidence from the anodized 6061 construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x fuel rails machined from 6061 aluminum, black anodized, large internal bore\u003c\/li\u003e\n\u003cli\u003e4x 8AN ORB ports per rail (2 end, 2 bottom); 8 total\u003c\/li\u003e\n\u003cli\u003e14mm injector bores compatible with OEM injectors and aftermarket injectors with OEM VQ fitment\u003c\/li\u003e\n\u003cli\u003eUnique stainless steel brackets and hardware permit fitment across all VQ engines; OEM injector clips reuse on VQ35DE\/VQ35HR\u003c\/li\u003e\n\u003cli\u003eVQ35DE ONLY: two Radium 14-0150 8AN ORB plugs are required in one center port per rail due to the OEM manifold mounting bosses (sold separately)\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85; NO fittings included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe plumbing kits complete the picture, and each is engine-specific: the VQ35DE kit (20-0468) runs an SAE adapter to the OEM hard line under the vehicle, PTFE hoses to the rear rail ports, plugs and 6AN adapters for every port, and the 20-0460 adapter reusing the OEM pulse damper; the VQ35HR\/VQ37VHR kit (20-0469) routes the same architecture to the front rail ports with two 20-0459 adapters reusing the OEM dampers. Radium's direct-mount pulse dampers also fit some of the 8AN ORB ports on the DE and HR, giving damping options beyond OEM reuse. One install note that catches DE builders: the OEM intake manifold mounting bosses require two 14-0150 plugs occupying one center port per rail, a DE-only quirk that does not apply to HR or VHR engines. Injector rule as always: OEM VQ fitment, dimensions confirmed with the injector manufacturer.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Black anodized 6061 aluminum fuel rails\u003c\/li\u003e\n\u003cli\u003e4x Stainless steel mounting brackets\u003c\/li\u003e\n\u003cli\u003e8x Bolts\u003c\/li\u003e\n\u003cli\u003eFittings NOT included; plumbing kits 20-0468 (DE) \/ 20-0469 (HR\/VHR) sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2003-2009 Nissan 350Z and 2009-2020 Nissan 370Z\u003c\/li\u003e\n\u003cli\u003e2003-2008 Infiniti G35, 2008-2013 G37, 2014-2015 Q50 and Q60, 2003-2008 FX35 (VQ35DE\/VQ35HR\/VQ37VHR)\u003c\/li\u003e\n\u003cli\u003eVQ35DE installs require 2x 14-0150 plugs, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695832643,"sku":"20-0458","price":284.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0458-12004134944838_46fcfd6e-b587-4d94-9d76-3edfdf39bd73.jpg?v=1786717151"},{"product_id":"radium-engineering-fuel-rail-1989-2002-nissan-skyline-gtr-r32-33-34-20-0217","title":"Radium Engineering Fuel Rail | 1989-2002 Nissan Skyline GTR R32\/33\/34 (20-0217)","description":"\u003cp\u003e\u003cstrong\u003eThe RB26's factory rail was engineered for 276 advertised horsepower; nobody builds an RB26 for 276 horsepower.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe restrictive OEM rail chokes fuel delivery under high pressure exactly when a big-power RB needs consistency most. The \u003cstrong\u003eRadium Engineering Fuel Rail for the Nissan RB26DETT\u003c\/strong\u003e is designed specifically for OEM R32, R33, and R34 intake manifolds: a large 0.69\" internal bore in a custom 6063 aluminum extrusion, CNC machined, black anodized, and laser etched. Press-fit machined spacers and washers completely isolate the rail from heat transfer via the manifold and mounting bolts, and the 11mm ID (Denso) upper injector bores accept aftermarket injectors matching OEM fitment, with included O-rings letting the factory JECS injectors carry over too. Three 8AN ORB ports plus a 1\/8\" NPT gauge port. All fuels including E85.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConsistent fuel delivery to all six injectors where the restrictive OEM rail falls behind under pressure\u003c\/li\u003e\n\u003cli\u003eRail volume ready for the single-turbo and E85 builds the platform lives for\u003c\/li\u003e\n\u003cli\u003eCooler fuel through complete thermal isolation from the manifold and bolts\u003c\/li\u003e\n\u003cli\u003eInjector freedom across the 11mm Denso-bore aftermarket plus OEM reuse with the included O-rings\u003c\/li\u003e\n\u003cli\u003ePorts for the DMR regulator, pulse damper, and gauge the fuel system deserves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned specifically for OEM R32\/R33\/R34 RB26DETT intake manifolds\u003c\/li\u003e\n\u003cli\u003e0.69\" internal bore, CNC machined custom 6063 aluminum extrusion, black anodized, laser etched\u003c\/li\u003e\n\u003cli\u003ePress-fit machined spacers and washers completely isolate the rail from manifold and bolt heat transfer\u003c\/li\u003e\n\u003cli\u003e11mm ID (Denso) upper injector bores accept aftermarket injectors with OEM fitment; included O-rings enable OEM JECS injector reuse\u003c\/li\u003e\n\u003cli\u003e3x 8AN ORB ports (both ends and center) plus 1x 1\/8\" NPT gauge port\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe port layout maps to Radium's ecosystem: 8AN ORB adapter fittings carry feed and return, the end ports accept a direct-mount DMR regulator, the center port takes an 8AN ORB pulse damper, and the NPT port hosts a gauge or sender with PTFE paste. Injector guidance follows the OEM-fitment rule, with any aftermarket injector matching the factory dimensions dropping in, dimensions confirmed with the injector manufacturer. For stock-style plumbing, the companion 20-0217-PK plumbing kit (sold separately) makes it a complete bolt-on: hose from the filter to the rear port via 6AN hose end and adapter, an FPR adapter mounting the OEM regulator to the front port, hose to the frame rail hard line, stainless EFI clamps, and plugs for the center and gauge ports. In Radium's own R32 fuel delivery system, this rail anchors the engine end alongside the FPD-R damper, DMR, and 0-100 psi gauge.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized laser etched RB26DETT fuel rail\u003c\/li\u003e\n\u003cli\u003ePress-fit thermal isolation spacers and washers\u003c\/li\u003e\n\u003cli\u003e6x Injector O-rings for OEM JECS injector reuse\u003c\/li\u003e\n\u003cli\u003eMounting hardware; injectors and fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1989-2002 Nissan Skyline GT-R R32, R33, R34 (RB26DETT, OEM intake manifolds)\u003c\/li\u003e\n\u003cli\u003eStagea 260RS and RB26 swap applications with OEM manifolds\u003c\/li\u003e\n\u003cli\u003ePlumbing kit 20-0217-PK sold separately for factory-style hookup\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695996483,"sku":"20-0217","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0217-29454192836678_d5a3083b-d261-4f89-abb2-cf11f448f98d.jpg?v=1786717155"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-2006-mitsubishi-evo-9-20-0119-pk","title":"Radium Engineering Fuel Rail Plumbing Kit | 2006 Mitsubishi Evo 9 (20-0119-PK)","description":"\u003cp\u003e\u003cstrong\u003eThe Radium Evo rail speaks 8AN ORB; the Evo's factory fuel system speaks Mitsubishi. This kit translates.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the Mitsubishi Evo 7\/8\/9\u003c\/strong\u003e includes the components to install the Radium 20-0119-12 fuel rail (not included) with the OEM fuel configuration: the fittings and hardware bridging the rail's ORB architecture back to the factory feed, return, and regulator plumbing for a bolt-in installation that keeps the stock fuel system layout intact.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe Radium rail installed on factory plumbing without fitting-by-fitting research\u003c\/li\u003e\n\u003cli\u003eThe OEM fuel system configuration retained through the upgrade\u003c\/li\u003e\n\u003cli\u003eA complete hookup from one box, ordered alongside the rail\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePlumbing components to install the Radium Evo 7-9 fuel rail with the OEM fuel configuration\u003c\/li\u003e\n\u003cli\u003ePurpose-selected fittings and hardware for the factory lines\u003c\/li\u003e\n\u003cli\u003eFor the Radium 20-0119-12 fuel rail (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe kit serves the stock-configuration majority: 4G63 builds upgrading the rail for volume and port access while keeping Mitsubishi's factory feed and return architecture, where these components make the connection clean and correct. Builds converting to aftermarket regulators, AN feed lines, or full surge tank systems should skip the PK and select individual Radium ORB adapter fittings matching the architecture they actually plan, with the M14 inverted flare adapters covering the factory hard line interfaces. Standard install rules apply throughout, with ORB O-rings lubricated before assembly and AN flares installed dry. Rail sold separately; ordering the pair together makes the install a single session.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePlumbing components for installing the Radium Evo 7-9 rail with the OEM fuel configuration\u003c\/li\u003e\n\u003cli\u003eFuel rail (20-0119-12) NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2001-2006 Mitsubishi Lancer Evolution 7, 8, and 9 running the Radium fuel rail with factory plumbing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672696029251,"sku":"20-0119-PK","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0119-pk-29454190608454_cfbf8784-225f-48f9-bda3-25d22d05da4e.jpg?v=1786717155"},{"product_id":"1995-2002-nissan-s14-15-sr20det-fuel-rail-kit-by-radium-engineering-20-0359","title":"Radium Engineering Fuel Rail Kit | Nissan S14\/S15 SR20DET (20-0359)","description":"\u003cp\u003e\u003cstrong\u003eEvery high-power SR20 conversation ends at the same place: those side feed injectors have to go.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe SR20DET's side feed architecture caps injector selection right where E85 and big turbos need it open. The \u003cstrong\u003eRadium Engineering Top Feed Fuel Rail Conversion Kit for the Nissan SR20DET (S14\/S15)\u003c\/strong\u003e is the definitive fix, designed specifically for the S14\/S15 OEM intake manifold: a 0.69\" internal bore rail CNC machined from solid 6061 aluminum, black anodized, converting the engine to 14mm ID top feed injection. Green anodized billet injector seats press into the manifold providing a sealed base, phenolic spacers thermally isolate the rail at the OEM bosses, and the kit even solves the IACV problem, replacing the OEM 2-bolt bypass hard line with a machined spacer, barb adapter, hose, and gasket. All fuels including E85. S13 SR20DET uses Radium's separate kit.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModern top feed injectors from ID850 through ID2600 unlocked on the SR\u003c\/li\u003e\n\u003cli\u003eFuel delivery that stays consistent under high pressure where the restrictive OEM rail chokes\u003c\/li\u003e\n\u003cli\u003eA complete, leak-free conversion, with the IACV rerouting engineered instead of improvised\u003c\/li\u003e\n\u003cli\u003eCooler fuel from phenolic isolation between rail and manifold\u003c\/li\u003e\n\u003cli\u003eBoost-sealed injector bases via O-ring sealed press-in billet seats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned specifically for the SR20DET S14\/S15 OEM intake manifold; converts side feed to top feed\u003c\/li\u003e\n\u003cli\u003e0.69\" internal bore, CNC machined solid 6061 aluminum, black anodized\u003c\/li\u003e\n\u003cli\u003e14mm ID injector bores; requires 34mm tall universal injectors with 14mm upper and lower O-rings (not included)\u003c\/li\u003e\n\u003cli\u003e4x Radium 20-0161 green anodized 25mm billet injector seats, O-ring sealed, press into the manifold\u003c\/li\u003e\n\u003cli\u003eIACV solution included: 20-0162 black anodized spacer kit, 18-0014 gasket, barb adapter, hose, and OEM clamp reroute the charge pipe hose externally\u003c\/li\u003e\n\u003cli\u003e3x phenolic spacers and washers, stainless M8x1.25 and M6x1 bolts; all fuels including E85; fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eInjector selection is fully documented, which removes the usual conversion guesswork: the rail requires a 34mm tall universal injector with 14mm O-rings top and bottom, a configuration most major suppliers offer, with direct fitments including the Injector Dynamics ID1050, ID1300, ID1700, and ID2600 in XDS-34-14-14 form plus the ID850 and ID2000 34-14-14 family and Evolved Injection DPI options. The IACV hardware is the part other conversions skip, since the factory idle valve's bypass hard line occupies rail territory, and Radium's spacer, gasket, and barb adapter relocate that plumbing cleanly rather than leaving it to the builder. Note that top feed injectors designed for 11mm bores can also work by switching their top O-rings to 14mm style. Ports are covered separately: this kit ships without fittings, so select Radium 8AN ORB adapters, a regulator, and a damper per your system plan.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized aluminum fuel rail\u003c\/li\u003e\n\u003cli\u003e3x Phenolic mounting bolt spacers and 3x washers\u003c\/li\u003e\n\u003cli\u003e4x Radium 20-0161 green anodized 25mm injector seats\u003c\/li\u003e\n\u003cli\u003e1x Radium 20-0162 IACV spacer kit, 1x 18-0014 IACV gasket, IACV barb adapter, rubber hose, and OEM clamp\u003c\/li\u003e\n\u003cli\u003e3x Stainless M8x1.25 and 3x M6x1 mounting bolts\u003c\/li\u003e\n\u003cli\u003eInjectors and port fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1995-2002 Nissan Silvia \/ 240SX S14 and S15 with SR20DET (OEM intake manifold)\u003c\/li\u003e\n\u003cli\u003eSR20DET swap applications using the S14\/S15 manifold; S13 manifolds use Radium's separate S13 kit\u003c\/li\u003e\n\u003cli\u003e34mm top feed injectors with 14mm upper and lower O-rings\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672696094787,"sku":"20-0359","price":275.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0159-28681824239686_b92bb421-60ac-490c-b38f-f3bd25fe7caf.jpg?v=1786717157"},{"product_id":"radium-fuel-rail-plumbing-kit-1989-2002-nissan-skyline-gtr-r32-33-34-20-0217-pk","title":"Radium Fuel Rail Plumbing Kit | 1989-2002 Nissan Skyline GTR R32\/33\/34 (20-0217-PK)","description":"\u003cp\u003e\u003cstrong\u003eThe Radium RB26 rail can plumb a race car; this kit plumbs a Skyline.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the Nissan RB26DETT\u003c\/strong\u003e turns the 20-0217 rail into a complete bolt-on for factory-plumbed R32, R33, and R34 GT-Rs: fuel hose connects the filter to the rail's rear port through a 6AN hose end and adapter fitting, an FPR adapter mounts the OEM fuel pressure regulator to the front rail port, more hose links the FPR to the hard line on the frame rail, stainless steel EFI clamps secure every barb, and plugs close the center and gauge ports. Everything the stock-configuration install needs, nothing it does not.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA same-day rail upgrade keeping the factory fuel architecture intact\u003c\/li\u003e\n\u003cli\u003eThe OEM regulator retained on a purpose-made adapter, no improvisation\u003c\/li\u003e\n\u003cli\u003eEvery hose barb secured with proper stainless EFI clamps\u003c\/li\u003e\n\u003cli\u003eUnused ports properly plugged and ready for future dampers or gauges\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel hose connecting the fuel filter to the rear rail port via 6AN hose end and adapter fitting\u003c\/li\u003e\n\u003cli\u003eFPR adapter mounting the OEM fuel pressure regulator to the front rail port\u003c\/li\u003e\n\u003cli\u003eFuel hose connecting the FPR to the frame rail hard line\u003c\/li\u003e\n\u003cli\u003eStainless steel EFI clamps for all hose barbs\u003c\/li\u003e\n\u003cli\u003ePlugs for the center port and gauge port\u003c\/li\u003e\n\u003cli\u003ePurpose-built for the Radium RB26DETT fuel rail (20-0217, sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe kit exists because most RB26 owners upgrading the rail are not re-plumbing the car, and these components bridge the Radium rail's ORB architecture back to Nissan's factory lines cleanly. The plugged center and gauge ports are future-proofing rather than waste, since a pulse damper or pressure gauge can replace either plug later without touching the rest of the system. Builds heading toward an aftermarket regulator, AN feed lines, or E85 conversions with larger plumbing should skip this kit and select Radium 8AN ORB adapter fittings for the architecture they actually plan. Rail sold separately; standard install rules apply, with ORB O-rings lubricated and hose clamps torqued evenly.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel hose, 6AN hose end, and adapter fitting (filter to rear rail port)\u003c\/li\u003e\n\u003cli\u003eOEM FPR adapter for the front rail port\u003c\/li\u003e\n\u003cli\u003eFuel hose (FPR to frame rail hard line)\u003c\/li\u003e\n\u003cli\u003eStainless steel EFI clamps\u003c\/li\u003e\n\u003cli\u003eCenter port and gauge port plugs\u003c\/li\u003e\n\u003cli\u003eFuel rail (20-0217) NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1989-2002 Nissan Skyline GT-R R32, R33, R34 running the Radium RB26DETT rail with factory fuel plumbing\u003c\/li\u003e\n\u003cli\u003eRetains the OEM fuel pressure regulator\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672696717379,"sku":"20-0217-PK","price":85.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0217-pk-29454204436550_d0a03038-90d1-422a-ba51-edeb4a390f75.jpg?v=1786717163"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-2001-2005-honda-civic-si-and-2002-2006-acura-rsx-type-s-20-0230-pk","title":"Radium Fuel Rail Plumbing Kit | 2001-2005 Civic Si \u0026 2002-2006 RSX Type-S (20-0230-PK)","description":"\u003cp\u003e\u003cstrong\u003eThe Radium K-series rail arrives plumbing-agnostic; this kit decides it speaks factory.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the Honda K-Series\u003c\/strong\u003e connects the Radium 20-0230-02 rail to the stock fuel system in one step: an 8AN ORB male to 5\/16\" SAE male fitting mates the factory quick-connect feed line to the rail, with the fitting extended so it clears the OEM coolant hose on cars equipped with one, and two 8AN ORB plugs seal the rail's unused ports. Bolt the rail, install three fittings, done.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA same-afternoon rail upgrade using the factory feed line untouched\u003c\/li\u003e\n\u003cli\u003eCoolant hose clearance designed in, courtesy of the extended quick connect fitting\u003c\/li\u003e\n\u003cli\u003eUnused ports properly sealed with real ORB plugs, not improvised hardware\u003c\/li\u003e\n\u003cli\u003eA center port left available for a Radium FPD-XR pulse damper if the build wants one\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x 8AN ORB male to 5\/16\" SAE male quick connect fitting, extended to clear the OEM coolant hose (if equipped)\u003c\/li\u003e\n\u003cli\u003e2x 8AN ORB plugs for the rail's unused ports\u003c\/li\u003e\n\u003cli\u003ePurpose-built for the Radium K-series fuel rail (20-0230-02, sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe kit exists because the Radium K rail ships bare for custom builds, while most Si and RSX owners just want the better rail on the stock plumbing, and these three fittings close that gap. Installation follows the rail's documented flow: lubricate all O-rings before assembly, connect the SAE fitting to the factory feed, plug the remaining ports, cycle the key to prime, and leak-check before and after first start. Builders who want pulse damping can put a Radium FPD-XR in the center port instead of a plug, a combination Radium shows in its own documentation. AN-plumbed builds should skip this kit and select ORB adapter fittings for their hose sizes instead.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x 8AN ORB male to 5\/16\" SAE male extended quick connect fitting\u003c\/li\u003e\n\u003cli\u003e2x 8AN ORB plugs\u003c\/li\u003e\n\u003cli\u003eFuel rail (20-0230-02) NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2001-2005 Honda Civic Si and 2002-2006 Acura RSX \/ RSX Type-S running the Radium K-series rail with the factory feed line\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672697143363,"sku":"20-0230-PK","price":47.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0230-pk-29454190739526_98db641e-5f21-434f-a842-d4bfc9c0d48b.jpg?v=1786717172"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-2013-2021-subaru-brz-scion-fr-s-toyota-86-20-0111-pk","title":"Radium Engineering Fuel Rail Plumbing Kit | 2013-2021 Subaru BRZ\/Scion FR-S\/Toyota 86 (20-0111-PK)","description":"\u003cp\u003e\u003cstrong\u003eThe Radium BRZ rails arrive ready for custom lines; this kit makes them speak factory instead.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the BRZ \/ FR-S \/ 86\u003c\/strong\u003e completes the 20-0111-02 rail installation on the stock fuel system: PTFE hoses resistant to all fuel types connect the factory feed line to both rails and handle the bank-to-bank crossover, with the fittings and hardware to finish the job in one order. Everything needed for the hookup, engineered as a set instead of assembled from a parts wall.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA complete rail installation from one box, with no fitting-by-fitting guesswork\u003c\/li\u003e\n\u003cli\u003ePTFE hose confidence across gasoline, E85, and every blend between\u003c\/li\u003e\n\u003cli\u003eThe factory feed line retained, keeping the install bolt-on\u003c\/li\u003e\n\u003cli\u003eBoth banks plumbed with matched, purpose-cut components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAllows easy hookup of the Radium BRZ\/FR-S\/86 fuel rails to the factory feed line\u003c\/li\u003e\n\u003cli\u003ePTFE hoses resistant to all fuel types including E85\u003c\/li\u003e\n\u003cli\u003eAll parts needed to complete the fuel rail installation\u003c\/li\u003e\n\u003cli\u003eFor 2012-2020 BRZ, FR-S, and GT86 ONLY\u003c\/li\u003e\n\u003cli\u003ePurpose-built for the Radium 20-0111-02 rail kit (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe fitment restriction is the headline: this plumbing kit serves the 2012-2020 FA20 cars only, so 2022+ GR86 and BRZ builds run the rails with custom plumbing instead. On eligible cars, one companion part makes the job dramatically easier, since Radium's DI ECU mount (sold separately) relocates the direct injection ECU and prevents the need to cut the heavy gauge steel fuel rail shields during plumbing installation, converting the hardest part of the job into bolt-on work. Builds using Radium's full fuel hanger plumbing system should note Radium's own guidance that this kit's provided feed hose and clamp simply go unused in that architecture. Rails sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePTFE fuel hoses (all-fuel resistant)\u003c\/li\u003e\n\u003cli\u003eFittings and hardware to complete the rail installation on the factory feed line\u003c\/li\u003e\n\u003cli\u003eFuel rails (20-0111-02) NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2012-2020 Subaru BRZ, Scion FR-S, Toyota GT86 (FA20) ONLY\u003c\/li\u003e\n\u003cli\u003eNOT for 2022+ GR86\/BRZ (FA24); those cars use custom plumbing\u003c\/li\u003e\n\u003cli\u003ePairs with the Radium DI ECU mount for shield-free installation on 12-21 cars\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672697176131,"sku":"20-0111-PK","price":113.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0111-pk-29454190575686_84a98b1b-068b-4a28-905c-eef383882f9e.jpg?v=1786717174"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-2000-2005-honda-s2000-20-0091-pk","title":"Radium Engineering Fuel Rail Plumbing Kit | 2000-2005 Honda S2000 (20-0091-PK)","description":"\u003cp\u003e\u003cstrong\u003eFour fittings and a hose turn the Radium S2000 rail from custom project into plug and play.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the 2000-2005 Honda S2000\u003c\/strong\u003e completes the 20-0591-02 rail installation on the factory fuel system: the green 6AN male fitting secures directly to the factory inverted flare line, the 8AN ORB to 6AN male adapter secures to the upper rear rail port, the 6AN PTFE hose becomes the new feed line connecting the two, and the pair of 8AN ORB plugs seal the front and rear rail ports. The OEM fuel pressure regulator connects to all the factory lines exactly as Honda routed them.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA plug and play rail install with the feed path solved by purpose-selected fittings\u003c\/li\u003e\n\u003cli\u003eAll-fuel confidence from the PTFE feed hose, E85 included\u003c\/li\u003e\n\u003cli\u003eThe OEM regulator and factory lines retained untouched\u003c\/li\u003e\n\u003cli\u003eBoth spare rail ports properly plugged and reserved for future dampers or gauges\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Green 6AN male fitting securing directly to the factory inverted flare line\u003c\/li\u003e\n\u003cli\u003e1x 8AN ORB to 6AN male adapter fitting for the upper rear fuel rail port\u003c\/li\u003e\n\u003cli\u003e1x 6AN PTFE hose serving as the new feed line (all-fuel resistant)\u003c\/li\u003e\n\u003cli\u003e2x 8AN ORB plugs sealing the front and rear rail ports\u003c\/li\u003e\n\u003cli\u003ePurpose-built for the Radium S2000 00-05 fuel rail (20-0591-02, sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium's install documentation walks the exact sequence: the 6AN adapter lands in the top port, the PTFE feed hose bridges from the factory inverted flare connection, and every O-ring MUST be lubricated prior to assembly to prevent failure, with Teflon paste reserved for any 1\/8\" NPT gauge threads. The kit's philosophy is factory-plumbing preservation, so builds heading toward aftermarket regulators or full AN systems should select individual ORB fittings instead and let this kit serve the stock-configuration majority. Rail sold separately; the dealer consensus is blunt that the rail installation requires either this kit or equivalent fittings, so ordering them together saves the second shipment.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Green 6AN male fitting (factory inverted flare line)\u003c\/li\u003e\n\u003cli\u003e1x 8AN ORB to 6AN male adapter fitting\u003c\/li\u003e\n\u003cli\u003e1x 6AN PTFE hose\u003c\/li\u003e\n\u003cli\u003e2x 8AN ORB plugs\u003c\/li\u003e\n\u003cli\u003eFuel rail (20-0591-02) NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2000-2005 Honda S2000 (F20C\/F22C) running the Radium 00-05 fuel rail with factory plumbing\u003c\/li\u003e\n\u003cli\u003eRetains the OEM fuel pressure regulator\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672697208899,"sku":"20-0091-PK","price":85.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0091-pk-29454190379078_5397b90f-d1b2-4ca1-8234-6188cc3f02f2.jpg?v=1786717174"},{"product_id":"radium-engineering-fuel-rail-1989-1993-mazda-miata-20-0769-02","title":"Radium Engineering Fuel Rail | 1989-1993 Mazda Miata (20-0769-02)","description":"\u003cp\u003e\u003cstrong\u003eThe NA 1.6's fuel rail was sized for 116 stock horsepower, and turbo Miata math left that behind decades ago.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail for the Mazda 1.6L B6\u003c\/strong\u003e gives the early Miata a rail worthy of its aftermarket: CNC machined from billet 6061 aluminum, black anodized and laser etched, as a direct replacement for the OEM fuel rail with four threaded ports all tapped 8AN ORB. The 11mm ID injector bores match OEM so factory injectors carry over, the OEM plastic spacers reuse to thermally insulate the rail from the aluminum intake manifold, and every fuel type including E85 is welcome. This is the rail-only kit for custom fuel systems; the 20-0769-PK plumbing kit (sold separately) covers factory-plumbing installs.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel delivery headroom for the turbo kits and ITB builds the NA 1.6 attracts\u003c\/li\u003e\n\u003cli\u003eFour 8AN ORB ports opening regulator, damper, gauge, and custom plumbing choices\u003c\/li\u003e\n\u003cli\u003eFactory injectors reinstalled directly in true 11mm OEM-spec bores\u003c\/li\u003e\n\u003cli\u003eManifold heat kept out of the fuel via the reused OEM thermal spacers\u003c\/li\u003e\n\u003cli\u003eA rail that fits far beyond the Miata, across Mazda's global B6 family\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCNC machined billet 6061 aluminum, black anodized, laser etched; direct OEM rail replacement\u003c\/li\u003e\n\u003cli\u003eFour threaded ports, all tapped 8AN ORB (3\/4\"-16)\u003c\/li\u003e\n\u003cli\u003eUpgrade rail: 11mm ID injector bores; factory or OEM-equivalent injectors only (matching height and O-ring dimensions and styles)\u003c\/li\u003e\n\u003cli\u003eReuses OEM plastic spacers for thermal insulation and factory mounting hardware\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003cli\u003eRail-only kit; fittings and plumbing kit (20-0769-PK) sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium's upgrade-rail rule governs injector plans: OEM injectors drop in, and upgrades must be OEM-equivalent in height and O-ring specification, with flow rates from your tuner and dimensions confirmed by the injector manufacturer, since Radium specifies nothing beyond OEM equivalent. The four-port layout turns the little rail into a real platform, with feed and return through ORB adapters and the remaining ports hosting a direct-mount regulator, pulse damper, or gauge adapter; Radium's standing advice is to leave ample space around ports destined for larger accessories, checking the dimensional drawings for clearance. Factory-regulator installs should pair the rail with the 20-0769-PK, which retains the OEM regulator and feed\/return hoses for a bolt-in job.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized, laser etched billet aluminum fuel rail\u003c\/li\u003e\n\u003cli\u003eFactory mounting hardware and OEM spacers are reused\u003c\/li\u003e\n\u003cli\u003eFittings and plumbing kit (20-0769-PK) sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1989-1993 Mazda MX-5 Miata and Eunos Roadster (1.6L B6)\u003c\/li\u003e\n\u003cli\u003e1993-1999 Mazda Xedos 6, 1997-2003 Familia and Etude\u003c\/li\u003e\n\u003cli\u003e1997-2004 Kia Sephia, Shuma, and Spectra\u003c\/li\u003e\n\u003cli\u003eFactory or OEM-equivalent injectors only\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672697503811,"sku":"20-0769-02","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0769-02-28245987098694_768641d7-43b3-457b-81ae-c30d739b87c5.jpg?v=1786717180"},{"product_id":"radium-top-feed-secondary-fuel-rail-conversion-kit-mazda-13b-rew-20-0447","title":"Radium Top Feed Secondary Fuel Rail Conversion Kit | Mazda 13B-REW (20-0447)","description":"\u003cp\u003e\u003cstrong\u003eThe secondaries carry the 13B-REW's top-end fuel load, and one rail now covers every manifold that feeds them.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Top Feed Secondary Fuel Rail Conversion Kit for the Mazda 13B-REW\u003c\/strong\u003e is the adaptable half of the rotary conversion: with the provided 2AN ORB plugs, the design permits both the OEM 2-port intake manifold and aftermarket 4-port intake manifolds from one rail. Anodized black aluminum with a large internal bore supporting all necessary engine power requirements, three 8AN ORB ports with the extra center port hosting the OEM fuel temperature sensor (via 14-0421), a pressure transducer, or a pulse damper. Insulating spacers, washers, stainless hardware, and stainless M8 extension mounts are included, along with 14mm lower injector seats carrying FKM O-rings for boosted duty, compatible with or without the OEM diffusers. Injectors sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTop-end fueling headroom on the injectors that come alive when a REW makes real power\u003c\/li\u003e\n\u003cli\u003eOne rail serving OEM 2-port and aftermarket 4-port manifolds via the included plug strategy\u003c\/li\u003e\n\u003cli\u003eBoost-sealed injector bases from the FKM O-ring seats\u003c\/li\u003e\n\u003cli\u003eCorrosion-proof mounting from the stainless M8 extension mounts\u003c\/li\u003e\n\u003cli\u003eThe OEM fuel temperature sensor retained on converted systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh flow secondary rail for the 13B-REW; converts to top feed injection\u003c\/li\u003e\n\u003cli\u003eAdaptable design: OEM 2-port manifold (20mm insulating spacers, billet seats, 2AN ORB plugs) and aftermarket 4-port manifolds (Xcessive uses the 11mm spacers) supported\u003c\/li\u003e\n\u003cli\u003eAnodized black aluminum, large internal bore, all fuels including E85\u003c\/li\u003e\n\u003cli\u003e3x 8AN ORB ports; center port for the OEM fuel temp sensor (14-0421), transducer, or damper\u003c\/li\u003e\n\u003cli\u003e14mm lower injector seats with FKM O-rings, compatible with or without OEM diffusers; 2x stainless M8 extension mounts\u003c\/li\u003e\n\u003cli\u003eVerified injectors: ID1050\/ID1300\/ID1700\/ID2600-XDS-60-14-14 (NOT included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eTwo compatibility notes from Radium determine the parts list. On the OEM 2-port manifold, the required space means an air control valve delete for the OEM 13B-REW intake manifold is required, Radium's 20-0449, sold separately. On an Elite Rotary Shop 4-port manifold, 2 extra injector seats are required beyond the included set, purchased separately, while the Xcessive 4-port simply uses the included 11mm spacers. With this rail, all lower intake manifold variations converge on the same verified injector list, the ID XDS-60-14-14 family, which keeps injector planning simple regardless of manifold path. Plumbing and crossover to the primary rail run through 8AN ORB adapters selected per your system, with O-rings lubricated at every install step.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized high flow secondary fuel rail\u003c\/li\u003e\n\u003cli\u003e14mm lower injector seats with FKM O-rings; billet seats and 2AN ORB plugs for OEM manifold use\u003c\/li\u003e\n\u003cli\u003e20mm and 11mm insulating spacers, washers, stainless hardware, 2x stainless M8 extension mounts\u003c\/li\u003e\n\u003cli\u003eInjectors, port fittings, ACV delete (20-0449), and extra ERS seats NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1992-2002 Mazda RX-7 FD3S (13B-REW)\u003c\/li\u003e\n\u003cli\u003eOEM 2-port intake manifold (requires 20-0449 ACV delete) and aftermarket 4-port manifolds (Xcessive; Elite Rotary Shop with 2 extra seats)\u003c\/li\u003e\n\u003cli\u003eVerified: ID1050\/1300\/1700\/2600-XDS-60-14-14 injectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672697765955,"sku":"20-0447","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0447-11953411620934_889ad5e0-b46c-4ac0-8a72-08fdc212aef3.jpg?v=1786717183"},{"product_id":"radium-engineering-plumbing-kit-2009-2013-chevrolet-corvette-zr1-2012-2015-chevrolet-camaro-zl1-and-2009-2015-cadillac-cts-v-20-0362-copy","title":"Radium Plumbing Kit | 2009-2015 Corvette ZR1\/Camaro ZL1\/Cadillac CTS-V (20-0545)","description":"\u003cp\u003e\u003cstrong\u003eTwelve ORB ports on the Radium LS9 rails, and this kit knows exactly what goes in every one.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Plumbing Kit for the GM LS9\/LSA\u003c\/strong\u003e makes the 20-0362 fuel rails a plug and play affair: an SAE quick connect adapts the OEM feed line into two 6AN PushLok fuel lines which supply each fuel rail, and 8AN ORB plugs are included for all unused ports. Nothing else is required. The factory feed stays, the supercharged V8 gets its rails fed evenly, and the parts wall stays undisturbed.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA rail install finished the same day, with the OEM feed line adapted rather than replaced\u003c\/li\u003e\n\u003cli\u003eBoth banks supplied evenly through the twin 6AN PushLok lines\u003c\/li\u003e\n\u003cli\u003eEvery unused ORB port properly plugged, sealed, and ready for future accessories\u003c\/li\u003e\n\u003cli\u003eNothing else to order, source, or improvise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplete plug and play plumbing hardware for the Radium 20-0362 LS9\/LSA fuel rails (sold separately)\u003c\/li\u003e\n\u003cli\u003eSAE quick connect adapting the OEM feed line into two 6AN PushLok fuel lines\u003c\/li\u003e\n\u003cli\u003e8AN ORB plugs included for all unused rail ports\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe kit's philosophy is the factory-feed path: the OEM line's quick connect becomes the source, the PushLok lines split the flow to each bank, and the plug set seals the ORB ports the build is not using yet, leaving twelve-port flexibility intact for later regulators, dampers, or pressure sensors. Builds heading toward full aftermarket AN feed systems can skip this kit and select individual ORB fittings instead, but for the returnless-retained majority, this is the whole answer in one box. PushLok ends install per push-on hose rules, quick connect O-rings get a light oiling, and Radium's mock-up advice for the rails applies before final assembly. Rails sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x SAE quick connect OEM feed line adapter\u003c\/li\u003e\n\u003cli\u003e2x 6AN PushLok fuel lines (one per rail)\u003c\/li\u003e\n\u003cli\u003e8AN ORB plugs for all unused ports\u003c\/li\u003e\n\u003cli\u003eFuel rails (20-0362) NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2009-2013 Chevrolet Corvette ZR1 (LS9)\u003c\/li\u003e\n\u003cli\u003e2012-2015 Chevrolet Camaro ZL1 and 2009-2015 Cadillac CTS-V (LSA)\u003c\/li\u003e\n\u003cli\u003e2013-2017 HSV GTS, Clubsport R8, Maloo R8, Senator Signature, GTSR\/GTSR W1; 2014+ Equus Bass 770\u003c\/li\u003e\n\u003cli\u003eFor the Radium 20-0362 fuel rails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComplete the System\u003c\/h3\u003e\n\u003cp\u003eThis kit handles the rails. If the build is going return-style from the tank forward, the hanger plumbing kits require both this kit and the 20-0362 rails:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel rails (20-0362):\u003c\/strong\u003e the twin twelve-port LS9\/LSA rails this kit is built around\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel hanger plumbing kit, CTS-V (20-1325-03 \/ 20-1325-05):\u003c\/strong\u003e full return conversion for 2008-2015 CTS-V, feeding the RH rail and regulating at the LH rail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel hanger plumbing kit, Camaro (20-1326-03 \/ 20-1326-05):\u003c\/strong\u003e the 2010-2015 Camaro version, with the feed and FPR rails reversed relative to the CTS-V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel pump hanger, 08-17 GM cars (20-1320 \/ 20-1322):\u003c\/strong\u003e the in-tank hanger supporting one to three aftermarket pumps\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672697831491,"sku":"20-0545","price":161.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-0545n_eb52be9e-4558-436f-bb4e-ab83d3ee201f.jpg?v=1786717184"},{"product_id":"radium-engineering-port-injection-kit-2020-2021-toyota-supra-20-0753-pk","title":"Radium Engineering Port Injection Kit | 2020-2026 Toyota Supra (20-0753)","description":"\u003cp\u003e\u003cstrong\u003eThe B58TU's direct injection built its legend at stock power; highly modified builds need a second act.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Port Injection Kit for the MK5 Supra\u003c\/strong\u003e installs between the intake manifold and the cylinder head, permitting the use of port injectors for the additional fuel required for highly-modified B58TU engines while the OEM direct injection system carries on untouched underneath. The fuel rail is CNC machined from extruded 6063 aluminum and laser etched, with both end ports machined 8AN ORB (3\/4\"-16), and the injectors mount at a calculated angle ensuring proper spray into the center of the intake ports without interference from surrounding components. Relocation hardware lets the OEM engine vanity cover be reused, with four adapters installing into its underside to make up for the manifold shift. Compatible with all fuel types including E85. Injectors and plumbing sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe B58's DI fueling ceiling removed, with port injectors carrying built-motor demand\u003c\/li\u003e\n\u003cli\u003eA real E85 path for the single-turbo and upgraded-turbo Supra builds\u003c\/li\u003e\n\u003cli\u003eProper atomization from injectors angled into the center of each intake port\u003c\/li\u003e\n\u003cli\u003eThe factory engine bay look preserved, with the vanity cover reinstalling on the included adapters\u003c\/li\u003e\n\u003cli\u003eStock DI drivability at idle and cruise, since the kit adds rather than replaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePIK adapter plate installs between the intake manifold and cylinder head; does NOT replace OEM direct injection\u003c\/li\u003e\n\u003cli\u003eFuel rail CNC machined from extruded 6063 aluminum, laser etched; 8AN ORB (3\/4\"-16) end ports\u003c\/li\u003e\n\u003cli\u003eInjectors mounted at a calculated angle for proper spray into the intake port centers\u003c\/li\u003e\n\u003cli\u003eAdapter plate usable as a simple intake manifold spacer without the rail (requires 2AN ORB plugs)\u003c\/li\u003e\n\u003cli\u003eVanity cover relocation hardware included (4 adapters)\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85; injectors NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eTwo system notes from Radium shape the build plan. First, because the PIK spaces the intake manifold off the head, an aftermarket charge pipe will be required for the throttle body connection, so budget that alongside the kit. Second, fuel supply is a fork: the 20-0753-PK plumbing kit provides the adapter fittings and hose connecting the rail to the OEM fuel line in under ten minutes, while high horsepower builds can run an independently regulated port injection pump system instead via Radium's dedicated hanger, in which case the PK is unnecessary. The spacer-only option is a quiet bonus, letting the plate serve as a manifold spacer with 2AN ORB plugs before the fueling stage of the build arrives. Injector control via your ECU or auxiliary controller completes the system.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x PIK adapter plate\u003c\/li\u003e\n\u003cli\u003e1x CNC machined 6063 port injection fuel rail (8AN ORB end ports)\u003c\/li\u003e\n\u003cli\u003eVanity cover relocation hardware (4 adapters) and mounting hardware\u003c\/li\u003e\n\u003cli\u003eInjectors, plumbing kit (20-0753-PK), charge pipe, and controller NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2020+ Toyota GR Supra 3.0 (B58TU); 2019+ BMW Z4 M40i (G29, B58TU) per Radium's platform coverage\u003c\/li\u003e\n\u003cli\u003eAftermarket charge pipe required for the throttle body connection\u003c\/li\u003e\n\u003cli\u003eSupplements OEM direct injection; does not replace it\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672699502659,"sku":"20-0753","price":712.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-28571471544390_746a3cf0-b098-498b-91c7-07cf3da45f22.jpg?v=1786717217"},{"product_id":"radium-fuel-rail-plumbing-kit-toyota-2jz-ge-20-0371-pk","title":"Radium Fuel Rail Plumbing Kit | Toyota 2JZ-GE (20-0871-PK)","description":"\u003cp\u003e\u003cstrong\u003eFour fittings, a hose, and a damper turn the Radium 2JZ-GE rail into a bolt-on afternoon.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the Toyota 2JZ-GE\u003c\/strong\u003e permits a complete fuel rail bolt-on affair on the returnless XE10 chassis: \u003ccite index=\"51-1\"\u003ethe provided inverted flare adapter fitting converts the factory hard line to 6AN, the included 6AN PTFE fuel line routes fuel to the rear fuel rail port through a low profile swivel fitting, a fuel pulse damper is provided to keep fuel pressure stable, and the remaining fuel rail ports are plugged.\u003c\/cite\u003e All-fuel PTFE construction, E85 included. Fuel rail sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe Radium rail installed on factory plumbing without a single improvised fitting\u003c\/li\u003e\n\u003cli\u003eStable fuel pressure from the included FPD-R pulse damper on a returnless system that needs it\u003c\/li\u003e\n\u003cli\u003eAll-fuel confidence through the 6AN PTFE feed line\u003c\/li\u003e\n\u003cli\u003eEvery unused rail port properly plugged with ORB hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplete bolt-on plumbing for the Radium 2JZ-GE fuel rail (sold separately) on the returnless XE10\u003c\/li\u003e\n\u003cli\u003eInverted flare adapter fitting converting the factory hard line to 6AN\u003c\/li\u003e\n\u003cli\u003e6AN PTFE feed hose routing to the rear rail port through a low profile 8AN swivel to 6AN fitting\u003c\/li\u003e\n\u003cli\u003eFPD-R fuel pulse damper kit included for pressure stability\u003c\/li\u003e\n\u003cli\u003e2x 8AN ORB plugs for the remaining rail ports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eReturnless systems live and die on pulse control, since there is no return path bleeding off injector-induced pressure oscillations, which is why Radium builds the FPD-R into this kit rather than leaving damping optional: the damper absorbs the pressure waves six injectors generate, keeping delivery consistent across the rev range. The inverted flare adapter meets the Toyota hard line on its own sealing standard, metal to metal on the flare seat with no sealant, while the ORB fittings and plugs follow the lubricated O-ring rule. The result reads like OEM engineering with aftermarket capacity, exactly what an IS300 or Altezza build wants under the intake.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x FPD-R fuel pulse damper kit\u003c\/li\u003e\n\u003cli\u003e1x 8AN swivel to 6AN male fitting (low profile)\u003c\/li\u003e\n\u003cli\u003e1x Inverted flare adapter fitting\u003c\/li\u003e\n\u003cli\u003e1x 6AN PTFE feed hose\u003c\/li\u003e\n\u003cli\u003e2x 8AN ORB plugs\u003c\/li\u003e\n\u003cli\u003eFuel rail NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2001-2005 Lexus IS300 (XE10, 2JZ-GE)\u003c\/li\u003e\n\u003cli\u003e1998-2005 Toyota Altezza (XE10, 2JZ-GE)\u003c\/li\u003e\n\u003cli\u003eReturnless factory fuel systems running the Radium 2JZ-GE rail\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672699535427,"sku":"20-0871-PK","price":156.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0371-12085595111494_4b65431b-4ad3-4ceb-9c6c-71ea88eef5dc.jpg?v=1786717217"},{"product_id":"radium-fuel-rail-plumbing-kit-nissan-vq35de-20-0468","title":"Radium Fuel Rail Plumbing Kit | Nissan VQ35DE (20-0468)","description":"\u003cp\u003e\u003cstrong\u003eThe VQ35DE rails have eight ports and a factory hard line waiting; this kit wires them together.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the Nissan VQ35DE\u003c\/strong\u003e completes the 20-0458 rail installation on the factory fuel system: an SAE adapter connects the OEM hard line under the vehicle, PTFE hoses route the feed to the rear rail ports, 6AN adapters and plugs dress every port correctly, and the 20-0460 adapter reuses the OEM pulse damper so factory pressure smoothing carries over. Engine-specific by design, this DE version routes to the rear ports, while HR and VHR engines use the separate 20-0469 front-port kit. Fuel rails sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA plug and play rail install on the factory feed system, no fitting research required\u003c\/li\u003e\n\u003cli\u003eOEM pulse damping retained through the included 20-0460 adapter\u003c\/li\u003e\n\u003cli\u003eAll-fuel confidence from PTFE hoses, E85 included\u003c\/li\u003e\n\u003cli\u003eEvery unused rail port properly plugged and reserved for future accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplete plumbing hardware for the Radium 20-0458 VQ rails on the VQ35DE (rails sold separately)\u003c\/li\u003e\n\u003cli\u003eSAE adapter connecting the OEM hard line under the vehicle\u003c\/li\u003e\n\u003cli\u003ePTFE fuel hoses routing feed to the rear rail ports\u003c\/li\u003e\n\u003cli\u003e6AN adapters and port plugs; 20-0460 adapter reusing the OEM pulse damper\u003c\/li\u003e\n\u003cli\u003eVQ35DE only; VQ35HR\/VQ37VHR use the separate 20-0469 kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe engine-specific split exists because Nissan moved the plumbing between generations, with the DE feeding from the rear and the HR\/VHR from the front, so kit selection follows the engine code stamped on the block rather than the chassis badge. One DE-specific rail note carries over from the rail listing: the OEM intake manifold mounting bosses require two 14-0150 plugs occupying one center port per rail, sold separately, a quirk unique to the DE. Radium's install documentation covers the SAE quick connect release procedure at the hard line, and the usual disciplines apply, with ORB O-rings lubricated and the OEM damper transferring to its new adapter home. Together with the rails, the result is a factory-serviceable fuel system with aftermarket headroom.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x SAE adapter for the OEM hard line\u003c\/li\u003e\n\u003cli\u003ePTFE fuel hoses (rear rail port routing)\u003c\/li\u003e\n\u003cli\u003e6AN adapters and port plugs\u003c\/li\u003e\n\u003cli\u003e1x 20-0460 OEM pulse damper adapter\u003c\/li\u003e\n\u003cli\u003eFuel rails (20-0458) NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNissan VQ35DE: 2003-2006 350Z, 2003-2006 Infiniti G35, 2003-2008 FX35\u003c\/li\u003e\n\u003cli\u003eFor the Radium 20-0458 fuel rails; VQ35DE requires 2x 14-0150 plugs (sold separately)\u003c\/li\u003e\n\u003cli\u003eVQ35HR\/VQ37VHR: use kit 20-0469\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672699732035,"sku":"20-0468","price":208.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0468-12004134355014_25902799-113c-4a3b-a746-21063d9b3d29.jpg?v=1786717219"},{"product_id":"radium-engineering-fuel-rail-kit-2000-2005-honda-s2000-20-0591-02","title":"Radium Engineering Fuel Rail Kit | 2000-2005 Honda S2000 (20-0591-02)","description":"\u003cp\u003e\u003cstrong\u003eThe F20C revs to nine grand; its fuel rail should be sized for the party.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail for the 2000-2005 Honda S2000\u003c\/strong\u003e replaces the OEM rail on the AP1's F20C with a high flow design featuring a large 0.69\" diameter internal bore supporting all necessary engine power requirements: CNC machined aluminum, anodized and laser etched, with threaded ORB ports opening the regulator, damper, gauge, and custom plumbing options the factory rail never offered. Factory injectors reinstall directly, and every fuel type including E85 is welcome. This is the rail-only kit; the 20-0091-PK plumbing kit (sold separately) makes it plug and play on the factory fuel system.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel delivery headroom for boosted and built F20C engines chasing the 9k redline\u003c\/li\u003e\n\u003cli\u003eConsistent injector supply through the 0.69\" bore at sustained high rpm\u003c\/li\u003e\n\u003cli\u003eORB ports opening dampers, gauges, and regulator options the OEM rail lacked\u003c\/li\u003e\n\u003cli\u003eFactory injectors carried over directly in OEM-spec bores\u003c\/li\u003e\n\u003cli\u003eE85 confidence from the anodized aluminum construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh flow fuel rail for the 00-05 S2000 (F20C); large 0.69\" internal bore\u003c\/li\u003e\n\u003cli\u003eCNC machined aluminum, anodized, laser etched\u003c\/li\u003e\n\u003cli\u003eThreaded ORB ports for feed, accessories, and plugs\u003c\/li\u003e\n\u003cli\u003eUpgrade rail: OEM or OEM-equivalent injectors only (matching height and O-ring specs)\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85; plumbing kit (20-0091-PK) sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe 00-05 and 06-09 S2000s split at the fuel system, with the AP1-era cars carrying the rail-mounted OEM regulator this rail is designed around: Radium's install documentation has the FPR bolting to the Radium rail with the OEM hex head bolts, O-ring inspected and the OEM rail's FPR screen handled per the instructions. Stock-plumbing installs complete with the 20-0091-PK, whose green inverted flare fitting, PTFE feed hose, and ORB plugs handle the factory line interface, while custom AN systems select individual ORB fittings instead. The injector rule is Radium's standard, with flow rates from your tuner and dimensions confirmed as OEM-equivalent. The 06-09 cars use the separate 20-0391 rail.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Anodized, laser etched high flow fuel rail with mounting hardware\u003c\/li\u003e\n\u003cli\u003ePlumbing kit (20-0091-PK) and fittings sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2000-2005 Honda S2000 (AP1, F20C)\u003c\/li\u003e\n\u003cli\u003eOEM or OEM-equivalent injectors only; 2006-2009 cars use the 20-0391 rail\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672701698115,"sku":"20-0591-02","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0591-02-29454193885254_c750d7d5-b1af-49ab-9db0-684a6dc07541.jpg?v=1786717257"},{"product_id":"radium-engineering-fuel-rail-kit-1989-1993-nissan-240sx-20-0558","title":"Radium Engineering Fuel Rail Kit | 1989-1993 Nissan 240SX (20-0558)","description":"\u003cp\u003e\u003cstrong\u003eThe single-cam KA24E deserves better fueling than 1989 gave it.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Kit for the 1989-1993 Nissan 240SX\u003c\/strong\u003e serves the S13's KA24E-era fuel system: a CNC machined aluminum high flow rail, anodized and laser etched, replacing the OEM rail with a large internal bore supporting all necessary engine power requirements and threaded ORB ports for feed, accessories, and plugs. Factory injector compatibility keeps the install bolt-on, all fuels including E85 are welcome, and the S13's turbo and build ambitions finally get a delivery path to match.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel delivery headroom for turbo KA builds and the S13's endless project ambitions\u003c\/li\u003e\n\u003cli\u003eORB ports opening regulators, dampers, and gauges the OEM rail never offered\u003c\/li\u003e\n\u003cli\u003eFactory injectors carried over in OEM-spec bores\u003c\/li\u003e\n\u003cli\u003eE85 confidence from the anodized aluminum construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh flow fuel rail for the 1989-1993 Nissan 240SX (KA24E single-cam era)\u003c\/li\u003e\n\u003cli\u003eCNC machined aluminum, anodized, laser etched; large internal bore\u003c\/li\u003e\n\u003cli\u003eThreaded ORB ports for feed, return, and accessories\u003c\/li\u003e\n\u003cli\u003eUpgrade rail: OEM or OEM-equivalent injectors only (matching height and O-ring specs)\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85; fittings sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe 89-93 chassis split matters at ordering time, since the early S13 carried the SOHC KA24E before the twin-cam KA24DE arrived, and Radium builds separate rails for each: this 20-0558 serves the single-cam cars, with the KA24DE rail and its conversion kits handling 1994+ and swapped applications. Port fittings are selected per your plumbing plan, factory-style or full AN, with Radium's ORB adapter catalog covering both paths and the usual O-ring lubrication discipline throughout. Injector upgrades follow the standard rule, OEM-equivalent dimensions confirmed with the injector manufacturer, flow rates from your tuner.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Anodized, laser etched high flow fuel rail with mounting hardware\u003c\/li\u003e\n\u003cli\u003eFittings and plumbing sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1989-1993 Nissan 240SX (S13, KA24E)\u003c\/li\u003e\n\u003cli\u003eKA24DE engines use Radium's separate rail\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672701730883,"sku":"20-0558","price":218.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0558-29454193721414_651152ab-ba59-42fa-a2e1-4d0e28c01e1c.jpg?v=1786717258"},{"product_id":"radium-engineering-dual-port-injection-fuel-rails-2002-2014-subaru-wrx-20-0499","title":"Radium Engineering Dual Port Injection Fuel Rails | 2002-2014 Subaru WRX (20-0499)","description":"\u003cp\u003e\u003cstrong\u003eEight injectors on a four-cylinder boxer, and these rails feed all of them.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Dual Port Injection (DPI) Fuel Rails for the Subaru EJ\u003c\/strong\u003e allow two fuel injectors per cylinder runner, \u003ccite index=\"109-1\"\u003eCNC machined and designed specifically for use with the Radium 20-0489-XX TGV housings\u003c\/cite\u003e, and \u003ccite index=\"112-1\"\u003eNOT compatible with any other housings on the market. The rails are manufactured with large 10AN ORB end ports supporting all necessary engine power requirements, with top auxiliary ports threaded 8AN ORB for ancillary accessories.\u003c\/cite\u003e Each rail carries 4 injector ports machined for 14mm O-rings, with adapters serving both the primary and secondary injector positions. Injectors sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStaged fueling capacity for big-power and flex fuel EJ builds, eight injectors strong\u003c\/li\u003e\n\u003cli\u003eIdle and drivability preserved by the primaries while the secondaries carry top-end demand\u003c\/li\u003e\n\u003cli\u003eMassive 10AN feed architecture with 8AN auxiliary ports for dampers and sensors\u003c\/li\u003e\n\u003cli\u003eOEM Subaru injectors reusable in the primary positions via the provided top hats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDPI fuel rails for Radium 20-0489-00\/-01 TGV housing kits ONLY; not compatible with other housings\u003c\/li\u003e\n\u003cli\u003e10AN ORB end ports; 8AN ORB top auxiliary ports; 4 injector ports per rail, 14mm O-ring machined\u003c\/li\u003e\n\u003cli\u003e\u003ccite index=\"115-1\"\u003ePrimary lower injectors: OEM Subaru (with provided top hat over the upper O-ring) or 60mm Bosch EV14 style (with provided injector seat over the lower O-ring)\u003c\/cite\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ccite index=\"112-1\"\u003eSecondary upper injectors: only 34mm Bosch EV14 style\u003c\/cite\u003e\u003c\/li\u003e\n\u003cli\u003eVerified lower primaries: ID1050\/1300\/1700\/2600-XDS-60-14-14; many owners already run ID WRX-fitment 48.11 injectors up top\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85; injectors NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eDual port injection solves the flex fuel math problem, since E85's volume demand at full power would need primary injectors too large to idle cleanly, and the DPI architecture splits the duty: reasonable primaries idle and cruise, secondaries stage in as load climbs, and the tune blends them. The system dependency is absolute, with these rails machined around the Radium TGV housing kits' injector bosses, so the 20-0489 housings come first in the build plan. One plumbing note from Radium matters at ordering time: the Subaru EJ series and parallel rail plumbing kits are NOT compatible with this DPI rail kit, so DPI plumbing is configured with individual fittings per your system. Injector selection follows the documented lists, dimensions confirmed with the manufacturer.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x CNC machined DPI fuel rails (4 injector ports each)\u003c\/li\u003e\n\u003cli\u003eInjector top hats (OEM primary reuse) and injector seats (EV14 primary use)\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003cli\u003eTGV housings (20-0489-XX), injectors, and fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2002-2014 Subaru WRX and EJ-family engines running Radium 20-0489-00\/-01 TGV housings\u003c\/li\u003e\n\u003cli\u003ePrimaries: OEM Subaru or 60mm EV14; Secondaries: 34mm EV14 only\u003c\/li\u003e\n\u003cli\u003eNOT compatible with Radium EJ series\/parallel rail plumbing kits\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672701763651,"sku":"20-0499","price":237.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0499-29454193590342_90a8f49f-7e43-46be-b27b-3e90627b0d09.jpg?v=1786717259"},{"product_id":"radium-engineering-fuel-rail-plumbing-kit-2006-2009-honda-s2000-20-0391-pk","title":"Radium Engineering Fuel Rail Plumbing Kit | 2006-2009 Honda S2000 (20-0391-PK)","description":"\u003cp\u003e\u003cstrong\u003eThe 06-09 S2000 went returnless, and its Radium rail plumbing kit speaks that dialect fluently.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit for the 2006-2009 Honda S2000\u003c\/strong\u003e completes the 20-0391 rail installation on the AP2's returnless fuel system: hose and adapter fittings for all three rail ports replicating the function of the OEM fuel system, including a port plug and an adapter to reuse the OEM fuel pulse damper, keeping Honda's pressure smoothing in service on the new rail. Rail sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA complete bolt-on rail install replicating the factory fuel system's function\u003c\/li\u003e\n\u003cli\u003eOEM pulse damping retained through the included damper adapter\u003c\/li\u003e\n\u003cli\u003eEvery rail port correctly dressed, fed, adapted, or plugged\u003c\/li\u003e\n\u003cli\u003eAll-fuel confidence through the provided hose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHose and adapter fittings for all 3 ports of the Radium 06-09 S2000 rail (sold separately)\u003c\/li\u003e\n\u003cli\u003eReplicates the function of the OEM returnless fuel system\u003c\/li\u003e\n\u003cli\u003eIncludes a port plug and an adapter to reuse the OEM fuel pulse damper\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eReturnless systems lean on pulse damping harder than return systems, since there is no return path bleeding off injector-induced oscillations, which is why the OEM damper's reuse adapter is the quiet hero of this kit: Honda's damper carries over to the Radium rail, and pressure stability carries over with it. The 06-09 fuel architecture differs enough from the 00-05 cars that the kits do not interchange, with the AP1's rail-mounted regulator world served by the separate 20-0091-PK. ORB O-rings lubricated at every step, flare connections dry and torqued by feel, and the AP2's fuel system finishes the upgrade reading like factory engineering.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel hose and adapter fittings for all 3 rail ports\u003c\/li\u003e\n\u003cli\u003e1x Port plug; 1x OEM fuel pulse damper reuse adapter\u003c\/li\u003e\n\u003cli\u003eFuel rail (20-0391) NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2006-2009 Honda S2000 (AP2, F22C) running the Radium 06-09 fuel rail\u003c\/li\u003e\n\u003cli\u003eReturnless factory fuel system configuration\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672701960259,"sku":"20-0391-PK","price":85.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0391-pk-29454191034438_dbe66ccf-e37c-486e-bd6a-2b265837f9c3.jpg?v=1786717264"},{"product_id":"radium-secondary-6-port-fuel-rail-mazda-20b-rew-20-0466","title":"Radium Secondary 6-Port Fuel Rail | Mazda 20B-REW (20-0466)","description":"\u003cp\u003e\u003cstrong\u003eSix secondary injectors on one three-rotor: the 20B build that outgrew four.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Secondary 6-Port Fuel Rail for the Mazda 20B-REW\u003c\/strong\u003e serves the big-power configuration: a high flow aluminum rail, anodized black for all popular fuel types including E85, carrying six secondary injector positions across the three-rotor's ports with a large internal bore supporting all necessary engine power requirements. The rail for 20B builds whose fueling math demands two secondaries per rotor. Injectors sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFueling capacity for the three-rotor's biggest single-turbo and E85 ambitions\u003c\/li\u003e\n\u003cli\u003eInjector duty cycles kept sane by splitting secondary flow across six positions\u003c\/li\u003e\n\u003cli\u003eE85 volume demand met without resorting to oversized, idle-hostile injectors\u003c\/li\u003e\n\u003cli\u003eSerious plumbing through the rail's ORB porting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSecondary 6-port rail for the Mazda 20B-REW; six injector positions\u003c\/li\u003e\n\u003cli\u003eCNC machined aluminum, anodized black; large internal bore; ORB ports\u003c\/li\u003e\n\u003cli\u003eAll popular fuel types including E85; injectors not included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe six-port secondary architecture exists because injector math eventually corners a big rotary, with E85's volume demand at three-rotor power levels pushing four secondaries past comfortable duty cycles or into idle-hostile sizes, and doubling the positions restores the margin: six reasonable injectors staged by the ECU instead of four monsters. Port machining and engine-side provisions must match the six-injector configuration, so confirm your housing setup and engine management strategy before ordering, with Radium's documentation and the standard four-position 20-0465 covering conventional builds. O-rings lubricated, leak check at first start, tune blended by someone who has staged a rotary before.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Anodized secondary 6-port rail with mounting hardware\u003c\/li\u003e\n\u003cli\u003eInjectors and plumbing fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMazda 20B-REW three-rotor, six-secondary configurations\u003c\/li\u003e\n\u003cli\u003eStandard 4-position secondary is the 20-0465\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672702582851,"sku":"20-0466","price":246.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0466-7766960242758_ea1fd339-32d8-453f-98df-f4b0f30baa6b.jpg?v=1786717277"},{"product_id":"radium-secondary-fuel-rail-mazda-20b-rew-20-0465","title":"Radium Secondary Fuel Rail | Mazda 20B-REW (20-0465)","description":"\u003cp\u003e\u003cstrong\u003eThe 20B's secondaries carry the boost-era fuel load, and this rail carries the secondaries.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Secondary Fuel Rail for the Mazda 20B-REW\u003c\/strong\u003e is the high flow companion to the primary conversion rail on the 1990-1995 Mazda\/Eunos Cosmo's three-rotor: aluminum construction anodized black for compatibility with all popular fuel types including E85, a large internal bore supporting all necessary engine power requirements, and 8AN ORB porting for serious plumbing. Injectors sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSecondary injector supply that holds through the load range where rotaries drink hardest\u003c\/li\u003e\n\u003cli\u003eDelivery capacity matched to single-turbo and bridge-port ambitions\u003c\/li\u003e\n\u003cli\u003eE85 confidence from the anodized aluminum construction\u003c\/li\u003e\n\u003cli\u003eModern serviceable plumbing replacing the Cosmo's aging factory rail\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh flow secondary rail for the Mazda 20B-REW (1990-1995 Cosmo)\u003c\/li\u003e\n\u003cli\u003eCNC machined aluminum, anodized black; large internal bore; 8AN ORB ports\u003c\/li\u003e\n\u003cli\u003eAll popular fuel types including E85; injectors not included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRotary fueling is staged by design, with primaries handling idle and low load while secondaries stage in as demand climbs, and on a boosted three-rotor the secondary circuit is where the real volume moves, making its rail's bore and porting the ones that matter at full song. The rail pairs with the 20-0464 primary conversion to complete the engine, with the combo commonly plumbed through 8AN ORB adapter fittings and an FPD-R damper in the feed. Injector compatibility follows Radium's documentation, O-rings lubricated at install, and the first-start leak check runs before the first boost.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Anodized high flow secondary rail with mounting hardware\u003c\/li\u003e\n\u003cli\u003eInjectors and plumbing fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMazda 20B-REW three-rotor (1990-1995 Mazda\/Eunos Cosmo, swaps)\u003c\/li\u003e\n\u003cli\u003ePairs with the 20-0464 primary conversion rail\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672702615619,"sku":"20-0465","price":227.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0465-28318167433286_2442fe22-f0bb-4307-9e45-f23500c31bbe.jpg?v=1786717278"}],"url":"https:\/\/www.tunedbyshawn.com\/collections\/fuel-rails.oembed?page=2","provider":"Tuned by Shawn","version":"1.0","type":"link"}