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Ideal for Subaru EJ-series builds using parallel fuel rails requiring professional plumbing connections with integrated fuel pressure regulation
10:1+ compression
They can be adjusted multiple times with confidence that the threads will not stretch or fatigue
The included Radium injector seats must be installed into the cylinder head injector ports
Good increase in mid-range power
Radium Top Feed Upgrade Fuel Rails w/Top FPD Port - Subaru WRX/STI/Forester Mazda-RX-7-FC3S-1992 Ideal for Subaru EJ-series buildsRadium Top Feed Upgrade Fuel Rails w Top FPD Port Subaru WRX STI Forester Top feed upgrade fuel rails with top mounted fuel pulse damper port for Subaru WRX, STI, and Forester. Engineered by Radium Engineering to provide superior fuel distribution and plumbing flexibility with integrated FPD mounting for high performance applications. Compatibility Subaru WRX (2002 2014) Subaru STI (2004 2014) Subaru Forester XT (2004 2013) EJ20 EJ25 engines with top
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