ZM2-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
1999	Mazda	Miata	10th Anniversary
1990-1997,1999-2005	Mazda	Miata	Base
1993	Mazda	Miata	LE
2000-2005	Mazda	Miata	LS
1994-1997	Mazda	Miata	M Edition
2004-2005	Mazda	Miata	Mazdaspeed
1991,2000-2003	Mazda	Miata	SE
2003	Mazda	Miata	Shinsen
1997	Mazda	Miata	STO