Action Clutch Stage 1 HD clutch kit for 2004–2021 Subaru WRX STI 2.5L (EJ257) Turbo AWD. Featuring a reinforced steel-backed copper-Kevlar organic facing and a heavy-duty diaphragm plate with increased clamping force, it raises torque capacity with approximately 20% heavier pedal feel than the standard Stage 1. Suited to heavy-duty street use and mild track duty, units are inspected and include enclosed spring retainers.
Action Clutch 04-21 Subaru WRX STI 2.5L (EJ257) Turbo AWD Stage 1 HD Clutch Kit (2OS)