ACT XT/Race Rigid 4-pad clutch kit for 2006–2025 Subaru WRX uses an Xtreme pressure plate with an exclusive diaphragm design to increase clamp load, reduce deflection and extend clutch life. Diaphragms undergo a four-stage heat-treating process; the kit pairs a ceramic-friction 4-pad rigid race disc and a heat-treated chrome-moly hub for quicker shifts and firmer engagement suited to smaller discs.
ACT 06-25 Subaru WRX XT/Race Rigid 4 Pad Clutch Kit