Radium Engineering 02-14 Subaru WRX/STI Top Feed Fuel Rail Upgrade (Factory Top Feed Motors Only) - 20-0567-02

Radium Engineering Top Feed Fuel Rail Upgrade — Subaru EJ, Bottom Port (20-0567-02)

A pair of large internal bore rails for factory top-feed EJ engines, sized to support whatever the engine needs without pressure drop across the rail at high injector duty cycle. CNC machined from solid 6061 aluminum, black anodized, and laser etched.

Each rail carries three 8AN ORB ports for feed, return, and a fuel pulse damper. This version has the damper port machined into the underside center of each rail. Stainless steel brackets attach to the factory fuel rail mounting points, so it's a direct swap.

Two sets of machined phenolic spacers are included for injector height flexibility and thermal insulation — that's what keeps heat from the head out of the fuel and gives you room to run injectors that aren't exactly OEM length.

Compatible with all fuel types including E85.

Fitment: 02-14 Impreza WRX (USDM), 07-14 WRX (JDM/EDM), 07-21 WRX STI, 06-13 Forester XT, 01-03 Legacy GT (JDM), 07-12 Legacy GT, 07-12 Outback XT, 05-06 Saab 9-2X Aero. Factory top-feed engines only.

Injector requirement: all injectors must use 11mm diameter upper O-rings, same as OEM Subaru. This is an upgrade rail, not a top-feed conversion — injectors need to be OEM-equivalent in height and O-ring style.

One clearance note: the center port bulge can interfere with early AVCS solenoids on the EJ207 and JDM EJ205. If that's your engine, use 20-0577-02 instead — same rail with a top port rather than a bottom port.

Includes two black anodized laser-etched aluminum fuel rails, thermal insulating spacers, and stainless steel mounting brackets.