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The Ironman Unsprung clutch kit for 2004–2021 Subaru WRX STI (2.5L EJ257) emphasizes extreme durability and torque holding for race applications. With sintered iron facings and a heavy dual clamp-load pressure plate, it yields aggressive engagement and high capacity for competitive settings, and is not recommended for normal street driving.
Action Clutch 04-21 Subaru WRX STI 2.5L (EJ257) Turbo AWD Ironman Unsprung Clutch Kit
