ACT Heavy-Duty Performance Clutch Discs

ACT Heavy-Duty Performance clutch discs are available in solid or sprung hub styles. These kits feature ACT's most popular heavy-duty pressure plates, which use exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life. All diaphragms endure a 4-stage heat-treating process for unparalleled performance. Each pressure plate has precision cover stampings to provide rigidity and consistency. Additional details: * Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle * Moderate friction life, extended by ACT's exclusive diaphragm design * Carefully engineered, precisely assembled, accurately balanced * Uses select ceramic friction materials for high heat tolerance and maximum performance * Recommended for high horsepower street or race use * 100 percent clamp load tested and dynamically computer balanced for smooth high RPM reliability Select from these two options and features: * ACT's 6-pad, SPRING-CENTERED race discs feature a spring-center to properly damp torsional vibrations and resist failure 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 6-pad, spring-centered race disc, engagement is harsher, but shifting is faster. The 6-pad, spring-centered disc is recommended for larger clutch sizes to absorb more heat. * ACT performance street RIGID-HUB discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. The chromoly hub is heat-treated for strength and durability. Rivet design and materials are carefully selected for maximum strength. These discs are the minimum weight street disc for faster shifts. ACT's street rigid-hub discs provide race-proven performance with street manageability. Show Less