ACT ZM1-HDG6 HD/Race Sprung 6-Pad Clutch Kit for 1990-1993 Mazda Miata

ZM1-HDG6 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 6-pad, spring-centered race disc features a spring-center to properly damp torsional vibrations and resist failure under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 6-pad, spring-centered race disc, engagement is harsher, but shifting is faster. The 6-pad, spring-centered disc is recommended for larger clutch sizes to absorb more heat. HD/Race Sprung 6 Pad Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle; Moderate friction life, extended by ACT's exclusive diaphragm design; Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance; Recommended for high horsepower street or race use; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT ZM1-HDG6 HD/Race Sprung 6-Pad Clutch Kit is engineered for high-performance street and race applications requiring increased clamp load, rapid shifting, and reliable heat management. This kit combines ACT’s Heavy Duty pressure plate with a 6-pad, spring-centered race disc designed to handle demanding driving conditions while maintaining controlled torsional vibration damping.

The Heavy Duty pressure plate uses ACT’s exclusive diaphragm design to increase clamp load, reduce deflection, and help maximize clutch life. Each diaphragm undergoes a four-stage heat-treating process, while precision cover stampings improve rigidity and consistency. The included 6-pad ceramic friction disc offers high heat tolerance and aggressive engagement for faster shifts. Its spring-centered design helps absorb torsional vibrations, and reinforced spring retainers support the springs under harsh operating conditions.

This ACT clutch kit is designed for light to moderate pedal effort with aggressive engagement and potential OE-to-mild gear rattle. It is recommended for high-horsepower street or race use and is intended for larger clutch applications where increased heat absorption is beneficial. Every assembly is 100% clamp-load tested and dynamically computer balanced to promote smooth, dependable operation at high RPM. Fitment data indicates compatibility with select 1990-1993 Mazda Miata applications; verify vehicle year, engine, transmission, and original clutch specifications before ordering.

What's Included:

• ACT Heavy Duty pressure plate
• 6-pad, spring-centered race disc
• Clutch kit components required for installation
• ACT manufacturer warranty coverage

Technical Data: The kit uses select ceramic friction materials, a spring-centered disc, reinforced spring retainers, precision-balanced components, and an ACT Heavy Duty diaphragm pressure plate. It is intended for automotive use and is not CARB approved. California Proposition 65 warnings may apply.

Features:

• Heavy Duty diaphragm design: Increases clamp load, reduces deflection, and helps extend clutch service life.
• 6-pad ceramic race disc: Provides high heat tolerance, aggressive engagement, and faster shifting for performance applications.
• Spring-centered construction: Helps damp torsional vibrations and resist disc failure under severe operating conditions.
• Precision-tested assembly: Uses heat-treated components, precision cover stampings, and dynamic computer balancing for reliable high-RPM performance.

Fitments:
1990 Mazda Miata Base
1991 Mazda Miata Base
1991 Mazda Miata SE
1992 Mazda Miata Base
1993 Mazda Miata Base
1993 Mazda Miata LE

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Clearance Item: t
Regular Stock: t
Units Per Sku: 1