The ACT GM9-HDSS kit features ACT's most popular Heavy Duty pressure plate paired with its most popular street disc for GM's LS1/LS2/LS6-equipped F-body and Corvette platform. ACT Heavy Duty pressure plates use an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life, with every diaphragm undergoing ACT's four-stage heat-treating process. Precision cover stampings add rigidity and consistency. The included Performance street disc uses premium organic friction material with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability, with reduced marcel for faster shift action and increased strength and reliability.
WarrantyInstallation Instructions
Specifications:
- Pressure Plate: Heavy Duty, four-stage heat-treated diaphragm
- Disc Material: Organic, high copper content, steel-backed lining
- Disc Hub: Sprung, reduced marcel for faster shift action
- Cover: Precision-stamped for rigidity and consistency
- Recommended Use: Street and race use
Vehicle Applications:
- 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
Warning: This product can expose you to chemicals including carbon black, glass wool fibers, or silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
FAQ
What is included in the GM9-HDSS kit?
The kit includes ACT's Heavy Duty pressure plate and a Performance street sprung disc, sized for the shared LS1/LS2/LS6 clutch platform of these Chevrolet and Pontiac applications.
Is this kit suited for daily street driving?
Yes, this Heavy Duty/Performance Street Sprung combination is ACT's most popular street-oriented pairing, designed for smooth engagement with everyday drivability.
What vehicles does this kit fit?
It fits the 1998-2002 Chevrolet Camaro Z28/Z28 SS, 1997-2013 Chevrolet Corvette (including Z06, Grand Sport, 427, and Indianapolis 500/50th Anniversary pace car editions), and 1998-2002 Pontiac Firebird Formula/Trans Am and 2004-2006 GTO. See the full Vehicle Applications list above to confirm the exact year and trim.
Does this kit include a flywheel?
No, the GM9-HDSS kit includes the pressure plate and disc only; it uses the factory flywheel unless a separate ACT flywheel is purchased.