ACT ZM1-HDG4 kit combines the ACT Clutch Heavy Duty pressure plate with a 4-pad spring-centered race clutch disc for superior performance and durability. The pressure plate features ACT’s exclusive diaphragm design that increases clamp load, minimizes deflection, and extends clutch life. Each component undergoes a precise four-stage heat treatment and is accurately balanced to ensure consistent performance under high RPM. The spring-centered clutch disc effectively dampens torsional vibrations, resulting in smoother clutch pedal operation and reduced gear rattle. Its ceramic friction materials deliver excellent heat tolerance and wear resistance, making it suitable for demanding driving conditions. Reinforced spring retainers and wraparound spring windows enhance the clutch plate’s strength and reliability. Designed for smaller engines, this clutch kit provides aggressive engagement with light to moderate pedal effort. The ACT clutch is ideal for high-horsepower street or race applications where quick, precise shifting is essential.
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