RCM Uprated V5+ Inlet Valve Set Quantity:X8 Inlet Valves It is essential engines modified

It is essential engines modified to this level have the most reliable system for clamping the cylinder heads onto the block assembly to avoid the heads lifting under load at high levels of boost pressure

for Subaru Impreza 2008+

These kits are a direct replacement for the restrictive OE air box setup allowing for a huge increase in unrestricted air flow into the engine improving engine response and with the ability to support the needs of ever larger standard position air hungry turbochargers

Cylinder 4 cooling has long been a recognised weakness of the Subaru EJ engine family

RCM Uprated V5+ Inlet Valve Set Quantity:X8 Inlet Valves It is essential engines modifiedRCM Uprated Inlet Valve, for V5+ Heads