GSC P-D 2015+ Subaru Impreza WRX Chrome Polished Intake Valve - 35mm (+1mm) - Set of 50

Designed for best performance and longevity. Features advanced 3D design and simulation, stronger/higher flowing valve head, and less distortion at the face for better sealing. Swirl polished heads for smoother airflow, back cut to reduce weight for higher RPM/boost, and micro-polished stems for less drag. Intake valves are modified 21-4n stainless. Valve tips are hardened or have a stelite wafer tip for extended life. Optimized tip heights and keeper groove for proper valvetrain geometry and spring pressure balance. Compatible with OEM or upgraded keepers/locks. Reuse of valve locks not recommended for performance applications.