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The Stage 4 (1MD) clutch kit for 2004–2021 Subaru WRX STI (2.5L EJ257) is built around an unsprung MIBA Ceramic disc and reinforced pressure plate for race-oriented performance. It offers high torque capacity and rapid, direct engagement suited to drag, road, and drift racing where maximum control and durability under load are required.
Action Clutch 04-21 Subaru WRX STI 2.5L (EJ257) Turbo AWD Stage 4 Clutch Kit (1MD)
