ZM8-HDG4 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 4-pad spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even 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 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.

This Part Fits:

Year	Make	Model	Submodel
2008	Mazda	RX-8	40th Anniversary Edition
2004-2007	Mazda	RX-8	Base
2008-2011	Mazda	RX-8	Grand Touring
2009-2011	Mazda	RX-8	R3
2005	Mazda	RX-8	Shinka
2008-2011	Mazda	RX-8	Sport
2008-2009	Mazda	RX-8	Touring