ACT ZM2-HDG4 Heavy Duty Race Sprung 4-Pad Clutch Kit for 1990-2005 Mazda Miata

Fits 1990-2005 Mazda Miata models (Base, Mazdaspeed, LS, SE, M Edition, and Shinsen). This ZM2-HDG4 kit combines ACT’s Heavy Duty pressure plate with a 4-pad spring-centered race disc to provide increased clamp load and significantly faster shift speeds for high-performance use.

The Heavy Duty pressure plate utilizes a proprietary diaphragm design that undergoes a four-stage heat-treating process, ensuring consistent pedal feel and reduced deflection over the life of the clutch. Precision-stamped covers provide the rigidity necessary for high-RPM stability. The included 4-pad ceramic race disc features a spring-centered hub to damp torsional vibrations and protect the drivetrain, while the wraparound spring windows and thickened retainer stampings offer maximum support for the springs under harsh conditions.

• Increases clamp load for improved torque capacity and reduced slip
• 4-pad ceramic race disc allows for faster shifting and high heat tolerance
• Spring-centered hub reduces drivetrain shock and vibration
• Exclusive diaphragm heat-treatment for long-term performance consistency
• Precision-stamped cover and heavy-duty spring retainers for added strength
• Manufacturer Part Number: ZM2-HDG4