ACT HD/Perf Street Clutch Kit for GM12-HDSS Heavy Duty Pressure Plate & Stree...

ACT HD/Perf Street Clutch Kit for GM12-HDSS Upgrade your drive with proven durability and street performance. The ACT GM12-HDSS clutch kit combines a Heavy Duty pressure plate with a Performance Street disc to deliver stronger clamp load, improved heat management, and reliable engagement for spirited street use and occasional track duty. Key Features Heavy Duty Diaphragm Pressure Plate — Exclusive diaphragm design increases clamp load, reduces deflection and extends clutch life. Four-Stage Heat Treatment — Each diaphragm receives a multi-stage heat-treating process for consistent, high-temperature performance. Precision Cover Stampings — Rigid, precision-stamped covers ensure consistent clamp force and long-term reliability. Performance Street Disc — Premium organic friction material with elevated copper content improves heat transfer and fade resistance. Steel-Backed Lining — Enhanced burst strength and durability for aggressive driving conditions. Reduced Marcel — Faster shift action and improved engagement to complement the pressure plate’s characteristics. Why Choose the GM12-HDSS This kit is engineered for drivers who need a dependable, stronger-than-stock clutch without sacrificing smooth street manners. Ideal for modified GM applications where heat management, consistent clamp, and long-lasting friction are critical. ACT craftsmanship and materials deliver a balanced package: aggressive performance, reliable service life, and better pedal feel for confident shifting under load.