Advanced Clutch HD/Perf Street Sprung Kit GM12-HDSS kit features ACT’s most popular Heavy Duty pressure plate and most popular street disc. 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 Performance Street discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, with increased strength and reliability. Notes: Must use ACT flywheel (included in kit) or LS Flat flywheel. Features: Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle Longer friction life, extended by ACT’s exclusive diaphragm design Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade Recommended for street and race use 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability Specifications: Clutch Master Cylinder Included: No Grease Included: Yes Grade Type: Performance Flywheel Included: Yes Pilot Bushing Included: No Pressure Plate Type: Heavy Duty Release Bearing Included: No Clutch Disc Diameter: 11 in Clutch Disc Diameter: 280 mm Disc Material: Organic Input Spline Quantity: 26 Input Shaft Diameter: 1.125 in Alignment Tool Included: Yes Disc Type Sprung Solid: Sprung Pressure Plate Bolts Included: No Clutch Slave Cylinder Included: No Flywheel Bolts Included: No Pilot Bearing Included: Yes Flywheel Type: Prolite Product Weight (lbs.): 43.9 Torque Capacity (ft/lbs.): 709 Torque Capacity Over OE: 0.42 References Installation Instructions Applications 2010 Chevrolet Camaro SS 2011 Chevrolet Camaro 1SS 2011 Chevrolet Camaro SS 2012 Chevrolet Camaro 1SS 2012 Chevrolet Camaro SS 2013 Chevrolet Camaro SS 2014 Chevrolet Camaro SS 2014 Chevrolet Camaro Z/28 2015 Chevrolet Camaro SS 2015 Chevrolet Camaro Z/28 2006 Chevrolet Corvette Z06 2007 Chevrolet Corvette Z06 2008 Chevrolet Corvette 427 Limited Edition Z06 2008 Chevrolet Corvette Z06 2009 Chevrolet Corvette Z06 2010 Chevrolet Corvette Z06 2011 Chevrolet Corvette Z06 2011 Chevrolet Corvette Z06 Carbon 2012 Chevrolet Corvette Z06 2013 Chevrolet Corvette Z06 2011 Chevrolet Camaro 2SS 2012 Chevrolet Camaro 2SS