ZM4-HDR4 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 rigid race discs are made with high quality, ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc, engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.
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Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
2015	Mazda	MX-5 Miata	25th Anniversary Edition
2013-2015	Mazda	MX-5 Miata	Club
2006-2015	Mazda	MX-5 Miata	Grand Touring
2011-2012	Mazda	MX-5 Miata	Special Edition
2006,2013	Mazda	MX-5 Miata	Sport
2007-2012	Mazda	MX-5 Miata	Touring