The GSC Power Division +1mm intake valve set is specified for 2015 and later Subaru Impreza WRX applications and includes 35mm (+1mm) intake valves. Made from 21-4N stainless alloy with a chrome-polished finish, this valve set is intended for valve replacement or a valve-train rebuild on supported WRX engines where +1mm intake sizing is required.
GSC P-D 2015+ Subaru Impreza WRX +1mm (35mm) Intake Valve Set Stainless Alloy 21-4N Chrome Polished