ACT GM9-HDSS Heavy Duty Performance Street Sprung Clutch Kit

GM9-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. HD/Perf Street Sprung 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

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT GM9-HDSS Heavy Duty Performance Street Sprung Clutch Kit combines a high-clamp-load pressure plate with a premium organic street disc for dependable performance in daily driving, spirited street use, and select race applications. The kit is engineered for smooth, positive engagement while providing the strength and heat tolerance needed for demanding manual-transmission operation.

ACT Heavy Duty pressure plates use an exclusive diaphragm design to increase clamp load, reduce deflection, and help extend clutch life. Each diaphragm undergoes a four-stage heat-treating process for consistent performance, while precision cover stampings improve rigidity and uniformity. The included Performance Street sprung disc uses premium organic friction material with high copper content for improved heat transfer, plus steel-backed linings for increased burst strength and durability. Reduced marcel supports faster shift action and complements the pressure plate's responsive engagement characteristics.

The GM9-HDSS is carefully engineered, precisely assembled, accurately balanced, and 100% clamp-load tested. Its light to moderate pedal effort and smooth engagement make it well suited to street-driven vehicles, while the durable friction materials and reduced fade characteristics support occasional performance use. The kit is designed for extended friction life and reliable high-RPM operation, with performance backed by ACT's one-year warranty. Fitment includes select 2005–2012 Chevrolet Corvette applications; verify the vehicle year and configuration before ordering.

Product Outline

• Brief Description: Heavy Duty pressure plate and Performance Street sprung organic disc clutch kit for select Chevrolet Corvette applications.
• Key Features & Performance Benefits: See the Features section for four primary benefits.
• Key Product Specifications & Technical Data: ACT GM9-HDSS kit; Heavy Duty pressure plate; Performance Street sprung disc; organic friction material; high copper content; steel-backed lining; reduced marcel; dynamically computer balanced.
• What's Included: Heavy Duty pressure plate and Performance Street sprung clutch disc.
• Fitment: Select 2005–2012 Chevrolet Corvette models. Confirm exact vehicle configuration before installation.

Fitments:
1997 Chevrolet Corvette Base
1998 Chevrolet Camaro Z28
1998 Chevrolet Camaro Z28 SS
1998 Chevrolet Corvette Base
1998 Chevrolet Corvette Indianapolis 500 Pace Car
1998 Pontiac Firebird Formula
1998 Pontiac Firebird Trans Am
1999 Chevrolet Camaro Z28
1999 Chevrolet Camaro Z28 SS
1999 Chevrolet Corvette Base
1999 Pontiac Firebird Formula
1999 Pontiac Firebird Trans Am
2000 Chevrolet Camaro Z28
2000 Chevrolet Camaro Z28 SS
2000 Chevrolet Corvette Base
2000 Pontiac Firebird Formula
2000 Pontiac Firebird Trans Am
2001 Chevrolet Camaro Z28
2001 Chevrolet Camaro Z28 SS
2001 Chevrolet Corvette Base
2001 Chevrolet Corvette Z06
2001 Pontiac Firebird Formula
2001 Pontiac Firebird Trans Am
2002 Chevrolet Camaro Z28
2002 Chevrolet Camaro Z28 SS
2002 Chevrolet Corvette Base
2002 Chevrolet Corvette Z06
2002 Pontiac Firebird Formula
2002 Pontiac Firebird Trans Am
2003 Chevrolet Corvette 50th Anniversary Edition
2003 Chevrolet Corvette 50th Anniversary Edition Pace Car
2003 Chevrolet Corvette Base
2003 Chevrolet Corvette Z06
2004 Chevrolet Corvette Base
2004 Chevrolet Corvette Z06
2004 Pontiac GTO Base
2005 Chevrolet Corvette Base
2005 Pontiac GTO Base
2006 Chevrolet Corvette Base
2006 Pontiac GTO Base
2007 Chevrolet Corvette Base
2008 Chevrolet Corvette Base
2009 Chevrolet Corvette Base
2010 Chevrolet Corvette Base
2010 Chevrolet Corvette Grand Sport
2011 Chevrolet Corvette Base
2011 Chevrolet Corvette Grand Sport
2012 Chevrolet Corvette Base
2012 Chevrolet Corvette Grand Sport
2013 Chevrolet Corvette Base
2013 Chevrolet Corvette Grand Sport

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1