GSC P-D Chrome Polished Exhaust Valve - 31.5mm Head (+1mm) - Evo 1-9 / 90-98 DSM (Set 8) vendor_NRG Made from high quality SAE9254

Made from high quality SAE9254 steel

High Grade Mounting hardware included

The GrimmSpeed HiFlow Exhaust Manifold Crosspipe was developed specifically for the Subaru WRX 06-07 and Forester XT 04-08 to optimize exhaust gas flow

GFB uses stainless steel for the valve body and seat and 7075 aluminum on the actuator housing for strength and durability

complete with training resources

GSC P-D Chrome Polished Exhaust Valve - 31.5mm Head (+1mm) - Evo 1-9 / 90-98 DSM (Set 8) vendor_NRG Made from high quality SAE9254Part #: 2003 8 When designing these valves, GSC used advanced 3D design and simulation programs to create a stronger and higher flowing valve head design. Prototypes were used in the specific applications to make sure that they have the highest flowing valve head that is available on the market today. The materials they have used have less valve distortion at the face than any of the tested designs which allow for better sealing under extreme