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The ACT HD/Race Sprung 4‑pad clutch kit for the 1988 Mazda 929 pairs ACT's Heavy Duty diaphragm pressure plate with a spring‑centered race disc to handle harsher engagement and faster shifts. Diaphragms undergo a four‑stage heat treat; precision cover stampings improve rigidity and consistency. The spring‑center damps torsional vibration for quieter operation and long service, backed by a one‑year warranty.
ACT 1988 Mazda 929 HD/Race Sprung 4 Pad Clutch Kit
