{"product_id":"act-hd-clutch-w-4-pad-race-rigid-disc-for-90-93-mazda-miata-zm1-hdr4-1","title":"ACT HD Clutch w\/ 4 Pad Race Rigid Disc for 90-93 Mazda Miata - ZM1-HDR4","description":"\u003cdiv vocab=\"https:\/\/schema.org\/\" typeof=\"Product\"\u003e\u003cspan property=\"description\"\u003e\u003cbr style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003e\u003cb style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003eACT HD Clutch w\/ 4 Pad Race Rigid Disc for 90-93 Mazda Miata - ZM1-HDR4\u003c\/b\u003e\u003cbr style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003e\u003cbr style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003e\u003cb style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003eManufacturer: ACT\u003c\/b\u003e\u003cbr style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003e\u003cb style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003ePart#: ZM1-HDR4\u003c\/b\u003e\u003cbr style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003e\u003cbr style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003e\u003cp style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003eZM1-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.\u003cbr\u003e\u003cbr\u003eFeel\u003cbr\u003eLight to moderate pedal effort, aggressive engagement, increased gear rattle\u003cbr\u003e\u003cbr\u003eLife\u003cbr\u003eModerate friction life, extended by ACT's exclusive diaphragm design, rigid design may increase spline wear\u003cbr\u003e\u003cbr\u003eQuality\u003cbr\u003eCarefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance\u003cbr\u003e\u003cbr\u003eRecommended Use\u003cbr\u003eRecommended for race use only\u003cbr\u003e\u003cbr\u003eACT Difference\u003cbr\u003e100% clamp load tested and dynamically computer balanced for smooth high RPM reliability\u003cbr\u003e\u003cbr\u003eNote: For use with factory Flywheel\u003c\/p\u003e\n\u003cbr style=\"font-family: Arial, Helvetica, sans-serif; font-size: 14.6667px;\"\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cbr\u003e\u003ctable cellspacing=\"10\" cellpadding=\"0\" align=\"left\" style=\"width:100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eCalifornia Prop 65 Warning:\u003c\/strong\u003e 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.\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e ZM1HDR4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 837055008879\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Advanced Clutch Technology\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e ZM1-HDR4\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Advanced Clutch Technology","offers":[{"title":"Default Title","offer_id":43911398228081,"sku":"ZM1-HDR4","price":475.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2286\/3539\/files\/57_10cae71f-d088-48c9-a77d-576507bcb9a4.jpg?v=1786048603","url":"https:\/\/541motorsports.com\/products\/act-hd-clutch-w-4-pad-race-rigid-disc-for-90-93-mazda-miata-zm1-hdr4-1","provider":"541 Motorsports","version":"1.0","type":"link"}