ACT ZM4-HDG6 HD/Race Sprung 6-Pad Clutch Kit for Mazda MX-5 Miata

ZM4-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 ZM4-HDG6 HD/Race Sprung 6-Pad Clutch Kit is engineered for high-performance street and race applications requiring increased clamp load, fast shifting, and dependable heat resistance. This kit combines ACT’s Heavy Duty pressure plate with a 6-pad, spring-centered race disc to deliver consistent clutch engagement under demanding conditions. The pressure plate’s exclusive diaphragm design helps increase clamp load, reduce deflection, and extend clutch service life.

The 6-pad ceramic friction disc is designed to tolerate high heat while supporting aggressive driving and higher horsepower applications. Its spring-centered hub helps damp torsional vibrations and resist failure in harsh operating environments. Reinforced spring retainers use wraparound spring windows and thicker stampings to support the springs, reduce stress concentrations, and improve reliability. Engagement is more aggressive than an organic disc, but the design promotes faster shifting and strong power transfer. Pedal effort remains light to moderate, with OE to mild gear rattle possible depending on the vehicle and drivetrain.

Every ACT pressure plate diaphragm undergoes a four-stage heat-treating process, while precision cover stampings provide rigidity and consistent operation. The assembly is carefully engineered, precisely assembled, accurately balanced, 100% clamp-load tested, and dynamically computer balanced for smooth high-RPM reliability. This ACT clutch kit is listed for select 2007 through 2012 Mazda MX-5 Miata applications; verify the vehicle’s exact year, engine, transmission, and existing clutch configuration before installation. ACT backs the product with a one-year warranty.

• Fitment: Select 2007–2012 Mazda MX-5 Miata applications, including 2007, 2009, 2010, 2011, and 2012 models.
• Important: Confirm detailed vehicle fitment before ordering or installation.

What's Included

• ACT Heavy Duty pressure plate
• ACT 6-pad, spring-centered race disc
• Clutch kit components required for the listed application

Features:

• Heavy Duty Pressure Plate: ACT’s exclusive diaphragm design increases clamp load, reduces deflection, and helps maximize clutch life.
• 6-Pad Ceramic Race Disc: Select ceramic friction materials provide high heat tolerance and aggressive power transfer for high-performance driving.
• Spring-Centered Hub: Helps damp torsional vibrations and resist spring failure under harsh operating conditions.
• High-RPM Reliability: Precision-assembled, clamp-load tested, and dynamically computer balanced for consistent performance and smooth operation.

Fitments:
2006 Mazda MX-5 Miata Grand Touring
2006 Mazda MX-5 Miata Sport
2007 Mazda MX-5 Miata Grand Touring
2007 Mazda MX-5 Miata Touring
2008 Mazda MX-5 Miata Grand Touring
2008 Mazda MX-5 Miata Touring
2009 Mazda MX-5 Miata Grand Touring
2009 Mazda MX-5 Miata Touring
2010 Mazda MX-5 Miata Grand Touring
2010 Mazda MX-5 Miata Touring
2011 Mazda MX-5 Miata Grand Touring
2011 Mazda MX-5 Miata Special Edition
2011 Mazda MX-5 Miata Touring
2012 Mazda MX-5 Miata Grand Touring
2012 Mazda MX-5 Miata Special Edition
2012 Mazda MX-5 Miata Touring
2013 Mazda MX-5 Miata Club
2013 Mazda MX-5 Miata Grand Touring
2014 Mazda MX-5 Miata Club
2014 Mazda MX-5 Miata Grand Touring
2015 Mazda MX-5 Miata 25th Anniversary Edition
2015 Mazda MX-5 Miata Club
2015 Mazda MX-5 Miata Grand Touring

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
Regular Stock: t
Units Per Sku: 1