Complete Ferrea Valve train kit for RB25DET

This valve train kit is designed for the person with a serious performance engine build in mind. It features 1mm over sized intake and exhaust valves for increased airflow characteristics. This translates into more power as the engine can breathe easier when RPM and airflow demands increase. Exhaust valves are made from a high-nickel content super alloy to resist the extreme temperatures associated with a high performance turbocharged engine, and intake valves are constructed from stainless steel.

Dual-coil springs are used to increase spring load on the valve in order to prevent valve float at high RPM as well as provide a good leak-free seal for high-boost applications. Titanium retainers are significantly lighter than the steel OEM retainers which translate into less reciprocating mass and lowers the chance of valve-float. Spring seat locator's are provided with the kit to enable proper installation of the dual-coil spring.

WARNING: DUE TO VALVE TRAIN ASSEMBLY INSTALLED HEIGHTS MAXIMUM VALVE NET LIFT MUST NOT EXCEED 10.5 mm to avoid damage to oil seal.

Kit includes: