{"product_id":"radium-engineering-extension-kit-for-fcst-x-3-7in-1-2l","title":"Radium Engineering Extension Kit for FCST-X 3.7in 1.2L","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e: 20-1989\u003c\/p\u003e\n\u003ch4 class=\"p1\"\u003e\u003cb\u003eRadium Engineering 20-1989 Extension Kit for FCST-X 3.7in 1.2L: Boost Fuel Surge Tank Capacity for Reliable Racing Performance\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp class=\"p1\"\u003eThe Radium Engineering 20-1989 Extension Kit for FCST-X 3.7in 1.2L stands out as the direct solution for racers facing fuel delivery challenges, adding 1.2 liters of extra volume to your FCST-X fuel surge tank while repositioning one-way fill valves lower for enhanced protection against starvation during low-fuel cornering or hard acceleration.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis design ensures steady fuel pressure to your high-performance EFI engine, outperforming basic surge tanks by extending run times and reducing the risk of lean conditions that can sideline your build. Drivers report consistent power delivery across demanding track sessions, making this kit the practical pick for anyone pushing limits in competition setups over generic extensions that fall short on integration and durability.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eCrafted from CNC-machined anodized aluminum, the 20-1989 kit installs cleanly between the FCST-X top plate and existing canister, raising the overall height by 3.7 inches for that critical capacity gain without altering your fuel cell's footprint.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIt demands a minimum fuel cell depth of 10.8 inches to fit properly, pairing seamlessly with Radium's deeper cells for setups where every drop counts. This extension transforms your surge tank into a more robust system, handling aggressive driving better than stock configurations by trapping fuel around pumps longer and venting efficiently to prevent surges.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhat's Included in Your 20-1989 Purchase\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEvery Radium Engineering 20-1989 Extension Kit ships complete with these components for straightforward end-user assembly:\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eAnodized aluminum extension canister (adds the 1.2L volume)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eExtended stainless steel pump bracket (replaces the standard one for secure fit)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eLarge ID fuel pump tubing (for high-flow pump integration)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eSmall ID fuel pump tubing (for precise secondary lines)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eSubmersible fuel hose (ensures reliable submersion in the cell)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eStainless steel hardware kit (bolts, clamps, and fittings for mounting)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eNote\u003c\/strong\u003e: For FCST-X model 20-1991-00 equipped with Bosch BR540 or DeatschWerks DW400 pumps, add Radium part number 14-0691 adapter fittings (quantity based on pump count).\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eVehicle Fitment Details\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe 20-1989 Extension Kit fits universally across EFI racing vehicles using compatible Radium FCST-X surge tanks in deep fuel cells, eliminating starvation in high-G turns or low-tank scenarios common to track and drag applications. Specific compatibility includes:\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eFCST-X Surge Tank Models\u003c\/b\u003e: 20-1990-00, 20-1990-01, 20-1990-02, 20-1990-03; 20-1991-00 (with 14-0691 adapters) 20-1992-00, 20-1992-01, 20-1992-02, 20-1992-03\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eCompatible Radium Fuel Cells\u003c\/b\u003e: R14A (14-gallon, part 20-0614); R22A (22-gallon, part 20-0622) or any FCST-X-ready cell with at least 10.8 inches depth\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eVehicle Applications\u003c\/b\u003e: Universal for performance-modified street and race cars, including Subaru WRX\/STI (2002+), Nissan 350Z\/G35 (2003+), Mitsubishi Evo (2003+), and custom builds in deeper aftermarket cells ideal for setups like the Nissan Skyline GT-R (1989-2002) or Toyota Supra (1993-1998) with upgraded tanks.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eIncompatible With\u003c\/b\u003e: Shallow Radium cells like R06A, R10A, R11A; non-FCST-X surge tanks or cells under 10.8 inches deep\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003ePart weight and shipping box dimensions are not listed by the manufacturer, but the compact design keeps packaging efficient for standard ground shipping.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe Radium Engineering 20-1989 delivers proven reliability that keeps you on track longer than alternatives, securing it as the go-to upgrade for serious fuel system builds.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eOrder now to maintain that edge in every pass.\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43610359201871,"sku":"RAD20-1989","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/SKU_20-1989.jpg?v=1758143137","url":"https:\/\/www.blackopsautoworks.com\/products\/radium-engineering-extension-kit-for-fcst-x-3-7in-1-2l","provider":"Black Ops Auto Works","version":"1.0","type":"link"}