{"product_id":"act-90-91-civic-90-91-crx-sport-race-rigid-4-pad-clutch-kit-acthc4-spr4","title":"ACT [90-91 Civic, 90-91 CRX] Sport\/Race Rigid 4-Pad Clutch Kit","description":"\u003cp\u003eThe ACT HC4-SPR4 clutch kit pairs a Sport pressure plate with a 4-pad rigid race disc for 1990-1991 Honda Civic and 1990-1991 Honda CRX race applications. The Sport pressure plate uses ACT's exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life. ACT's 4-pad rigid race disc is made with high quality ceramic friction materials, and 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. Part number HC4-SPR4 (as listed in legacy data; official verification pending).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLight to moderate pedal effort, aggressive engagement, increased gear rattle\u003c\/li\u003e\n\u003cli\u003eModerate friction life, extended by ACT's exclusive diaphragm design; rigid design may increase spline wear\u003c\/li\u003e\n\u003cli\u003eExclusive diaphragm design increases clamp load, reduces deflection, and maximizes clutch life\u003c\/li\u003e\n\u003cli\u003eFour-stage heat-treated diaphragms for unparalleled performance\u003c\/li\u003e\n\u003cli\u003ePrecision cover stampings provide rigidity and consistency\u003c\/li\u003e\n\u003cli\u003eHigh quality ceramic friction materials for high heat tolerance and maximum performance\u003c\/li\u003e\n\u003cli\u003eHeat-treated chrome-moly hub for strength and durability\u003c\/li\u003e\n\u003cli\u003eLightweight, rigid design allows quicker shifts and smooth, trouble-free service\u003c\/li\u003e\n\u003cli\u003eHarsher engagement with faster shifting than stock\u003c\/li\u003e\n\u003cli\u003eCarefully engineered, precisely assembled, accurately balanced\u003c\/li\u003e\n\u003cli\u003e100% clamp load tested and dynamically computer balanced for smooth high-RPM reliability\u003c\/li\u003e\n\u003cli\u003eRecommended for race use only\u003c\/li\u003e\n\u003cli\u003eBacked by ACT's one-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACT","offers":[{"title":"Default Title","offer_id":47259583774822,"sku":"actHC4-SPR4","price":386.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/8703\/7237\/files\/act-90-91-civic-90-91-crx-sportrace-rigid-4-pad-clutch-kit-6768297.jpg?v=1791855969","url":"https:\/\/jdmuscleusa.com\/products\/act-90-91-civic-90-91-crx-sport-race-rigid-4-pad-clutch-kit-acthc4-spr4","provider":"JDMuscle","version":"1.0","type":"link"}