The ACT ZM4-HDG6 Heavy Duty Race Sprung 6 Pad Clutch Kit pairs ACT's most popular Heavy Duty pressure plate with a 6-pad spring-centered race disc. The Heavy Duty pressure plate uses an exclusive diaphragm design to increase clamp load and reduce deflection, with every diaphragm undergoing ACT's four-stage heat-treating process and precision cover stampings for rigidity and consistency. The 6-pad spring-centered race disc dampens torsional vibrations and resists failure under harsh conditions; wraparound spring windows and thicker retainer stampings on the spring retainers add support, reduce stress concentrations, and increase strength. Engagement is harsher and shifting is faster than a street disc, and the 6-pad configuration is recommended for larger clutch sizes that need to absorb more heat.
WarrantyInstallation Instructions
Specifications:
- Pressure Plate: ACT Heavy Duty, four-stage heat-treated diaphragm
- Disc: 6-Pad Spring-Centered Race Disc
- Hub: Spring-centered for torsional damping
- Includes: Pressure plate, 6-pad race disc, alignment tool (pilot bearing and release bearing included on some applications)
- Recommended Use: Race use, larger clutch sizes needing higher heat absorption
- Part Number: ZM4-HDG6
Vehicle Applications:
- 2006 Mazda MX-5 Miata Sport
- 2006 Mazda MX-5 Miata Grand Touring
- 2007 Mazda MX-5 Miata Touring
- 2007 Mazda MX-5 Miata Grand Touring
- 2008 Mazda MX-5 Miata Touring
- 2008 Mazda MX-5 Miata Grand Touring
- 2009 Mazda MX-5 Miata Touring
- 2009 Mazda MX-5 Miata Grand Touring
- 2010 Mazda MX-5 Miata Touring
- 2010 Mazda MX-5 Miata Grand Touring
- 2011 Mazda MX-5 Miata Touring
- 2011 Mazda MX-5 Miata Grand Touring
- 2011 Mazda MX-5 Miata Special Edition
- 2012 Mazda MX-5 Miata Touring
- 2012 Mazda MX-5 Miata Grand Touring
- 2012 Mazda MX-5 Miata Special Edition
- 2013 Mazda MX-5 Miata Grand Touring
- 2013 Mazda MX-5 Miata Club
- 2014 Mazda MX-5 Miata Grand Touring
- 2014 Mazda MX-5 Miata Club
- 2015 Mazda MX-5 Miata Grand Touring
- 2015 Mazda MX-5 Miata Club
- 2015 Mazda MX-5 Miata 25th Anniversary Edition
Warning: This product can expose you to chemicals including carbon black, glass wool fibers, or silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
FAQ
Is the 6-pad race disc a good choice for a track-only MX-5?
Yes, ACT recommends the 6-pad spring-centered race disc for larger clutch sizes that need to absorb more heat, making it a strong fit for repeated track sessions.
Will engagement be harsher than stock?
Yes. Like all of ACT's race-sprung discs, engagement is harsher and shifting is faster than a street disc.
Does the kit include a pilot bearing and release bearing?
Pilot bearing and release bearing are included on applications where the vehicle requires them.
Does this kit fit the 2015 25th Anniversary Edition MX-5?
Yes, the ZM4-HDG6 covers the 2015 25th Anniversary Edition along with Sport, Touring, Grand Touring, Special Edition, and Club trims across the 2006-2015 fitment range.