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"One of the design aspects we really wanted to have was keeping the turbo square to the engine and not having the inlet of the turbo facing towards the center line of the engine
Suited for 450-700hp
If you are modifying a S1 RB30 block to run a twin cam head you will need our modification timing belt kit listed here
Kelford Cams recommend valve spring KVS25NEO
Radium Top Feed Upgrade Fuel Rails w/Top FPD Port - Subaru WRX/STI/Forester RB "One of the design aspectsRadium 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
