The Action Clutch 7.25in triple-disc race clutch kit for Subaru WRX STI (2004–2021, 2.5L EJ257) is a competition-focused multi-disc assembly that includes a steel flywheel. It uses three sintered metallic race discs and a ventilated 6061-T6 billet aluminum cover paired with high-strength steel pressure and floater plates to boost heat capacity and deliver smoother, reliable engagement under extreme conditions.
Action Clutch 04-21 Subaru WRX STi 7.25in Triple Disc Race Clutch Kit w/Steel Flywheel