Introducing the ACT GM4-HDG6 Heavy Duty/Race Sprung 6 Pad Kit, a top-tier clutch solution engineered for those who demand performance without compromise. This kit features ACT's renowned Heavy Duty pressure plate, designed with an exclusive diaphragm that enhances clamp load while minimizing deflection. This means you can expect an extended clutch life and reliable performance, even under the most demanding conditions.
The pressure plate undergoes a meticulous four-stage heat-treating process, ensuring it stands up to the rigors of high-performance driving. Customers have praised its durability, stating, "I've put this clutch through its paces at the track, and it holds up beautifully!" With precision cover stampings, the pressure plate offers exceptional rigidity and consistency, making it a dependable choice for both street and race applications.
What sets the GM4-HDG6 apart is its 6-pad, spring-centered race disc. This design effectively dampens torsional vibrations, which helps to prevent failure even in harsh environments. The engagement may feel harsher, but it allows for quicker shifts, which is a significant advantage when every millisecond counts on the track. One satisfied user mentioned, "The engagement is aggressive, but it shifts like a dream!"
Additionally, the spring retainers are engineered with wraparound spring windows and thicker stampings, providing enhanced support and reducing stress concentrations. This meticulous attention to detail increases strength and reliability, ensuring that you can push your vehicle to the limits without worry.
Upgrade your vehicle's performance with the ACT GM4-HDG6 clutch kit and experience the difference in your driving. Whether you're hitting the streets or the track, this clutch is designed to deliver the reliability and performance you need.
Install Instructions:
Other Part Numbers:
ACT #actGM4-HDG6
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Buick Skylark | 1961-1972 | Base |
| Buick Skylark | 1968-1972 | Custom |
| Buick Skylark | 1970, 1972 | 350 |
| Chevrolet Bel Air | 1965-1975 | Base |
| Chevrolet Biscayne | 1965-1972 | Base |
| Chevrolet C10 | 1975-1986 | Custom |
| Chevrolet C10 | 1975-1986 | Scottsdale |
| Chevrolet C10 | 1975-1980 | Custom Deluxe |
| Chevrolet C10 | 1975-1986 | Silverado |
| Chevrolet C10 | 1975-1981 | Cheyenne |
| Chevrolet C10 | 1978-1980 | Big Ten |
| Chevrolet C10 | 1981 | Deluxe |
| Chevrolet C10 Pickup | 1969-1974 | Base |
| Chevrolet C10 Suburban | 1969-1974 | Base |
| Chevrolet C10 Suburban | 1975-1979, 1982, 1984-1986 | Scottsdale |
| Chevrolet C10 Suburban | 1975-1977, 1979, 1982-1986 | Silverado |
| Chevrolet C10 Suburban | 1975-1979 | Custom Deluxe |
| Chevrolet C10 Suburban | 1981-1986 | Custom |
| Chevrolet C10 Suburban | 1981 | Deluxe |
| Chevrolet C1500 | 1988-1995 | Cheyenne |
| Chevrolet C1500 | 1988-1995 | Silverado |
| Chevrolet C1500 | 1988-1992 | Scottsdale |
| Chevrolet C1500 | 1989-1991, 1994-1995 | Base |
| Chevrolet C1500 | 1990-1995 | WT |
| Chevrolet C1500 | 1990-1993 | 454 SS |
| Chevrolet C20 | 1975-1981, 1986-1987 | Cheyenne |
| Chevrolet C20 | 1975-1986 | Silverado |
| Chevrolet C20 | 1975-1986 | Scottsdale |
| Chevrolet C20 | 1975-1980 | Custom Deluxe |
| Chevrolet C20 | 1981 | Deluxe |
| Chevrolet C20 | 1981-1986 | Custom |
| Chevrolet C20 | 1986-1987 | Base |
| Chevrolet C20 Pickup | 1969-1974 | Base |
| Chevrolet C20 Suburban | 1969-1974 | Base |
| Chevrolet C20 Suburban | 1975-1979 | Custom Deluxe |
| Chevrolet C20 Suburban | 1975-1977, 1979, 1982-1986 | Silverado |
| Chevrolet C20 Suburban | 1975-1979, 1982, 1984-1986 | Scottsdale |
| Chevrolet C20 Suburban | 1981-1986 | Custom |
| Chevrolet C20 Suburban | 1981 | Deluxe |
| Chevrolet C2500 | 1988-1995 | Cheyenne |
| Chevrolet C2500 | 1988-1992 | Scottsdale |
| Chevrolet C2500 | 1988-1995 | Silverado |
| Chevrolet C2500 | 1988-1992, 1994-1995, 2000 | Base |
| Chevrolet C2500 | 1993, 1995 | Custom |
| Chevrolet C2500 | 1993, 1995-1999 | 400 SS |
| Chevrolet C2500 | 1994-1995 | WT |
| Chevrolet C2500 | 1995 | 60th Anniversary |
| Chevrolet C2500 | 2000 | LS |
| Chevrolet C30 | 1975-1982 | Base |
| Chevrolet C30 | 1975-1986 | Scottsdale |
| Chevrolet C30 | 1975-1981 | Cheyenne |
| Chevrolet C30 | 1975-1986 | Silverado |
| Chevrolet C30 | 1975-1980 | Custom Deluxe |
| Chevrolet C30 | 1981-1986 | Custom |
| Chevrolet C30 | 1981 | Deluxe |
| Chevrolet C30 Pickup | 1969-1974 | Base |
| Chevrolet Camaro | 1967-1973, 1975 | RS |
| Chevrolet Camaro | 1967-1972 | SS |
| Chevrolet Camaro | 1967-1974, 1977-1981 | Z28 |
| Chevrolet Camaro | 1967-1980 | Base |
| Chevrolet Camaro | 1973-1978 | LT |
| Chevrolet Camaro | 1976-1978 | LT Rally Sport |
| Chevrolet Camaro | 1976-1980 | Rally Sport |
| Chevrolet Camaro | 1979-1981 | Berlinetta |
| Chevrolet Camaro | 1981 | Sport |
| Chevrolet Caprice | 1966-1972 | Base |
| Chevrolet Chevelle | 1964-1968 | 300 |
| Chevrolet Chevelle | 1964-1965 | Malibu Super Sport |
| Chevrolet Chevelle | 1965-1969 | 300 Deluxe |
| Chevrolet Chevelle | 1965-1972 | Malibu |
| Chevrolet Chevelle | 1966 | Super Sport 396 |
| Chevrolet Chevelle | 1966, 1968-1972 | SS |
| Chevrolet Chevelle | 1967-1970 | SS 396 |
| Chevrolet Chevelle | 1967-1972 | Concours |
| Chevrolet Chevelle | 1968 | Nomad Custom |
| Chevrolet Chevelle | 1968-1972 | Nomad |
| Chevrolet Chevelle | 1969-1972 | Concours Estate |
| Chevrolet Chevelle | 1969-1972 | Greenbrier |
| Chevrolet Chevelle | 1970-1972 | Base |
| Chevrolet Chevelle | 1971-1972 | Heavy Chevy |
| Chevrolet Chevelle | 1973 | Deluxe |
| Chevrolet Corvette | 1966-1970 | Base |
| Chevrolet El Camino | 1964-1972 | Base |
| Chevrolet El Camino | 1968-1972 | SS |
| Chevrolet El Camino | 1968-1972 | Custom |
| Chevrolet Impala | 1965-1976 | Base |
| Chevrolet Impala | 1965-1967 | SS |
| Chevrolet Impala | 1975-1976 | Custom |
| Chevrolet Impala | 1975-1976 | Sport |
| Chevrolet Impala | 1976 | S |
| Chevrolet Impala | 1976 | Custom Landau |
| Chevrolet K10 | 1975-1978 | Cheyenne |
| Chevrolet K10 | 1975-1978, 1982, 1984-1986 | Scottsdale |
| Chevrolet K10 | 1975-1978 | Custom Deluxe |
| Chevrolet K10 | 1975-1977, 1982-1983, 1985-1986 | Silverado |
| Chevrolet K10 | 1981-1986 | Custom |
| Chevrolet K10 | 1981 | Deluxe |
| Chevrolet K10 Pickup | 1969-1974 | Base |
| Chevrolet K10 Suburban | 1969-1974 | Base |
| Chevrolet K10 Suburban | 1975-1977, 1979, 1983, 1986 | Silverado |
| Chevrolet K10 Suburban | 1975-1979, 1984, 1986 | Scottsdale |
| Chevrolet K10 Suburban | 1975-1979 | Custom Deluxe |
| Chevrolet K10 Suburban | 1981, 1983, 1986 | Custom |
| Chevrolet K10 Suburban | 1981 | Deluxe |
| Chevrolet K1500 | 1988-1998 | Cheyenne |
| Chevrolet K1500 | 1988-1998 | Silverado |
| Chevrolet K1500 | 1988-1992 | Scottsdale |
| Chevrolet K1500 | 1990-1998 | WT |
| Chevrolet K1500 | 1991 | Sport |
| Chevrolet K1500 | 1994-1997 | Base |
| Chevrolet K1500 | 1999 | LS |
| Chevrolet K20 | 1975-1980 | Custom Deluxe |
| Chevrolet K20 | 1975-1981 | Cheyenne |
| Chevrolet K20 | 1975-1986 | Scottsdale |
| Chevrolet K20 | 1975-1983, 1985-1986 | Silverado |
| Chevrolet K20 | 1981-1986 | Custom |
| Chevrolet K20 | 1981 | Deluxe |
| Chevrolet K20 Pickup | 1969-1974 | Base |
| Chevrolet K20 Suburban | 1969-1974 | Base |
| Chevrolet K20 Suburban | 1975-1977, 1985-1986 | Silverado |
| Chevrolet K20 Suburban | 1975-1978, 1985-1986 | Scottsdale |
| Chevrolet K20 Suburban | 1975-1978 | Custom Deluxe |
| Chevrolet K20 Suburban | 1985-1986 | Custom |
| Chevrolet K2500 | 1988-1992 | Scottsdale |
| Chevrolet K2500 | 1988-1998 | Cheyenne |
| Chevrolet K2500 | 1988-1998 | Silverado |
| Chevrolet K2500 | 1994-1995, 1998 | WT |
| Chevrolet K2500 | 1994-1997, 1999-2000 | Base |
| Chevrolet K2500 | 1999-2000 | LS |
| Chevrolet K30 | 1977-1986 | Silverado |
| Chevrolet K30 | 1977-1980 | Custom Deluxe |
| Chevrolet K30 | 1977-1986 | Scottsdale |
| Chevrolet K30 | 1977-1981 | Cheyenne |
| Chevrolet K30 | 1981-1986 | Custom |
| Chevrolet K30 | 1981 | Deluxe |
| Chevrolet K30 Pickup | 1969-1974 | Base |
| Chevrolet K5 Blazer | 1975-1980 | Cheyenne |
| Chevrolet K5 Blazer | 1975, 1977-1980 | Custom Deluxe |
| Chevrolet K5 Blazer | 1976 | Base |
| Chevrolet K5 Blazer | 1978, 1980-1986 | Silverado |
| Chevrolet K5 Blazer | 1981 | Deluxe |
| Chevrolet K5 Blazer | 1981-1986 | Custom |
| Chevrolet K5 Blazer | 1984 | Scottsdale |
| Chevrolet Nova | 1969-1979 | Base |
| Chevrolet Nova | 1973-1975, 1978-1979 | Custom |
| Chevrolet Nova | 1975-1978 | Police |
| Chevrolet Nova | 1975 | LN |
| Chevrolet Nova | 1976 | SS |
| Chevrolet Nova | 1976-1977 | Concours |
| Chevrolet Nova | 1977-1979 | Rally |
| GMC C15 | 1975-1978 | High Sierra |
| GMC C15 | 1975-1978 | Sierra Grande |
| GMC C15 | 1975-1978 | Sierra Classic |
| GMC C15 | 1975-1978 | Base |
| GMC C15 | 1977-1978 | Heavy Half |
| GMC C15 | 1977 | Indy Hauler |
| GMC C15 | 1978 | Street Coupe |
| GMC C15 Suburban | 1975-1978 | Base |
| GMC C15 Suburban | 1975-1978 | High Sierra |
| GMC C15 Suburban | 1975-1978 | Sierra Grande |
| GMC C15 Suburban | 1975-1978 | Sierra Classic |
| GMC C15/C1500 Pickup | 1969-1974 | Base |
| GMC C15/C1500 Suburban | 1969-1974 | Base |
| GMC C1500 | 1979-1982 | Sierra Grande |
| GMC C1500 | 1979-1982 | Street Coupe |
| GMC C1500 | 1979-1980 | Heavy Half |
| GMC C1500 | 1979-1986 | Sierra Classic |
| GMC C1500 | 1979-1986 | Base |
| GMC C1500 | 1979-1986 | High Sierra |
| GMC C1500 | 1988-1993 | Sierra SLX |
| GMC C1500 | 1988-1999 | Sierra SLE |
| GMC C1500 | 1988-1993 | Sierra |
| GMC C1500 | 1994-1999 | Sierra SL |
| GMC C1500 | 1994-1998 | Sierra Special |
| GMC C1500 | 1994-1999 | Sierra SLT |
| GMC C1500 | 1997 | Sierra GT |
| GMC C1500 Suburban | 1979-1986 | Sierra Classic |
| GMC C1500 Suburban | 1979-1982 | Sierra Grande |
| GMC C1500 Suburban | 1979-1986 | High Sierra |
| GMC C1500 Suburban | 1979-1986, 1992-1999 | Base |
| GMC C1500 Suburban | 1992-1999 | SLE |
| GMC C1500 Suburban | 1995-1999 | SLT |
| GMC C25 | 1975-1978 | High Sierra |
| GMC C25 | 1975-1978 | Sierra Grande |
| GMC C25 | 1975-1978 | Base |
| GMC C25 | 1975-1978 | Sierra Classic |
| GMC C25 Suburban | 1975-1978 | High Sierra |
| GMC C25 Suburban | 1975-1978 | Base |
| GMC C25 Suburban | 1975-1978 | Sierra Grande |
| GMC C25 Suburban | 1975-1978 | Sierra Classic |
| GMC C25/C2500 Pickup | 1969-1974 | Base |
| GMC C25/C2500 Suburban | 1969-1974 | Base |
| GMC C2500 | 1979-1982 | Sierra Grande |
| GMC C2500 | 1979-1986 | High Sierra |
| GMC C2500 | 1979-1986 | Base |
| GMC C2500 | 1979-1986 | Sierra Classic |
| GMC C2500 | 1988-1993 | Sierra SLX |
| GMC C2500 | 1988-2000 | Sierra SLE |
| GMC C2500 | 1988-1993 | Sierra |
| GMC C2500 | 1994-2000 | Sierra SL |
| GMC C2500 | 1994-2000 | Sierra SLT |
| GMC C2500 Suburban | 1979-1986 | Sierra Classic |
| GMC C2500 Suburban | 1979-1986 | High Sierra |
| GMC C2500 Suburban | 1979-1986, 1992-1999 | Base |
| GMC C2500 Suburban | 1979-1982 | Sierra Grande |
| GMC C2500 Suburban | 1992-1999 | SLE |
| GMC C2500 Suburban | 1995-1999 | SLT |
| GMC C35 | 1975-1978 | Sierra Grande |
| GMC C35 | 1975-1978 | High Sierra |
| GMC C35 | 1975-1978 | Sierra Classic |
| GMC C35 | 1975-1978 | Base |
| GMC C35/C3500 Pickup | 1969-1974 | Base |
| GMC C3500 | 1979-1986 | High Sierra |
| GMC C3500 | 1979-1986 | Sierra Classic |
| GMC C3500 | 1979-1986 | Base |
| GMC C3500 | 1979-1982 | Sierra Grande |
| GMC C3500 | 1988-2000 | Sierra SLE |
| GMC C3500 | 1988-1993 | Sierra SLX |
| GMC C3500 | 1988-1993 | Sierra |
| GMC C3500 | 1994-2000 | Sierra SL |
| GMC C3500 | 1994-2000 | Sierra SLT |
| GMC K15 | 1975-1978 | Base |
| GMC K15 | 1975-1978 | High Sierra |
| GMC K15 | 1975-1978 | Sierra Classic |
| GMC K15 | 1975-1978 | Sierra Grande |
| GMC K15 | 1977 | Indy Hauler |
| GMC K15 Suburban | 1975-1978 | High Sierra |
| GMC K15 Suburban | 1975-1978 | Base |
| GMC K15 Suburban | 1975-1978 | Sierra Classic |
| GMC K15 Suburban | 1975-1978 | Sierra Grande |
| GMC K15/K1500 Pickup | 1969-1974 | Base |
| GMC K15/K1500 Suburban | 1969-1974 | Base |
| GMC K1500 | 1979-1986 | High Sierra |
| GMC K1500 | 1979-1982 | Sierra Grande |
| GMC K1500 | 1979-1986 | Sierra Classic |
| GMC K1500 | 1979-1986 | Base |
| GMC K1500 | 1988-1999 | Sierra SLE |
| GMC K1500 | 1988-1993 | Sierra |
| GMC K1500 | 1988-1993 | Sierra SLX |
| GMC K1500 | 1993 | Sierra Sport |
| GMC K1500 | 1994-1998 | Sierra Special |
| GMC K1500 | 1994-1999 | Sierra SL |
| GMC K1500 | 1994-1999 | Sierra SLT |
| GMC K1500 | 1995 | Sierra SLS |
| GMC K1500 Suburban | 1979-1982 | Sierra Grande |
| GMC K1500 Suburban | 1979-1986, 1992-1999 | Base |
| GMC K1500 Suburban | 1979-1986 | Sierra Classic |
| GMC K1500 Suburban | 1979-1986 | High Sierra |
| GMC K1500 Suburban | 1992-1999 | SLE |
| GMC K1500 Suburban | 1995-1999 | SLT |
| GMC K25 | 1975-1978 | Sierra Classic |
| GMC K25 | 1975-1978 | High Sierra |
| GMC K25 | 1975-1978 | Sierra Grande |
| GMC K25 | 1975-1978 | Base |
| GMC K25 Suburban | 1975-1978 | High Sierra |
| GMC K25 Suburban | 1975-1978 | Sierra Grande |
| GMC K25 Suburban | 1975-1978 | Base |
| GMC K25 Suburban | 1975-1978 | Sierra Classic |
| GMC K25/K2500 Pickup | 1969-1974 | Base |
| GMC K25/K2500 Suburban | 1969-1974 | Base |
| GMC K2500 | 1979-1986 | Base |
| GMC K2500 | 1979-1986 | High Sierra |
| GMC K2500 | 1979-1986 | Sierra Classic |
| GMC K2500 | 1979-1982 | Sierra Grande |
| GMC K2500 | 1988-1993 | Sierra SLX |
| GMC K2500 | 1988-1993 | Sierra |
| GMC K2500 | 1988-2000 | Sierra SLE |
| GMC K2500 | 1994-2000 | Sierra SL |
| GMC K2500 | 1994-2000 | Sierra SLT |
| GMC K2500 Suburban | 1979-1986, 1992-1999 | Base |
| GMC K2500 Suburban | 1979-1986 | Sierra Classic |
| GMC K2500 Suburban | 1979-1986 | High Sierra |
| GMC K2500 Suburban | 1979-1982 | Sierra Grande |
| GMC K2500 Suburban | 1992-1999 | SLE |
| GMC K2500 Suburban | 1995-1999 | SLT |
| GMC K35 | 1977-1978 | Sierra Grande |
| GMC K35 | 1977-1978 | High Sierra |
| GMC K35 | 1977-1978 | Base |
| GMC K35 | 1977-1978 | Sierra Classic |
| GMC K35/K3500 Pickup | 1969-1974 | Base |
| GMC K3500 | 1979-1986 | Sierra Classic |
| GMC K3500 | 1979-1982 | Sierra Grande |
| GMC K3500 | 1979-1986 | High Sierra |
| GMC K3500 | 1979-1986 | Base |
| GMC K3500 | 1988-1993 | Sierra |
| GMC K3500 | 1988-2000 | Sierra SLE |
| GMC K3500 | 1988-1993 | Sierra SLX |
| GMC K3500 | 1994-2000 | Sierra SL |
| GMC K3500 | 1994-2000 | Sierra SLT |
| Oldsmobile Cutlass | 1965-1973 | Base |
| Oldsmobile Cutlass | 1965-1967 | Holiday |
| Oldsmobile Cutlass | 1967 | Turnpike Cruiser |
| Oldsmobile Cutlass | 1968, 1971-1973 | S |
| Oldsmobile Cutlass | 1972 | Cruiser |
| Oldsmobile Omega | 1973 | Base |
| Pontiac Bonneville | 1959-1960, 1967-1970 | Base |
| Pontiac Bonneville | 1959-1960 | Custom |
| Pontiac Bonneville | 1959-1960, 1967-1970 | Safari |
| Pontiac Catalina | 1959-1960, 1970 | Safari |
| Pontiac Catalina | 1959-1960, 1967-1970 | Base |
| Pontiac Catalina | 1968-1970 | Ventura |
| Pontiac GTO | 1970 | Base |
| Pontiac GTO | 1970 | The Judge |
| Pontiac Grand Prix | 1967-1970 | Base |

If you've added boost, tuned for more power, or simply want better throttle control, then your stock clutch won't cut it. That?s where ACT (Advanced Clutch Technology) comes in delivering high-performance clutch kits and flywheels designed for real drivers who push their builds on the street, strip, or track.
ACT?s lineup includes everything from daily driver friendly HD kits to hardcore twin disc setups for serious horsepower. Whether you?re launching hard in a WRX, drifting in a 370Z, or canyon carving in an M3, ACT gives you the torque capacity and engagement you need without sacrificing drivability.
Why ACT? Because Power Without Control Is Useless.ACT doesn?t just make universal performance parts ? they build complete, vehicle-specific clutch solutions for enthusiast favorites. Whether you daily a Civic Type R, track a Subaru STI, drift a 240SX, or drag a Mustang GT, ACT offers the right clutch to match your build goals.
Top supported platforms include the Nissan 350Z/370Z, Toyota Supra A90, Chevy Camaro SS/ZL1, Mitsubishi Evo, Ford Focus RS/ST, and BMW M3/M4 ? each with clutch options tuned to your driving needs.
What ACT Offers:ACT isn?t hype ? it?s proven. Their clutches are SFI-certified, track-tested, and used by racers in drag, time attack, autocross, drift, and rally. But what really matters? They hold power, last longer, and feel right even after hundreds of hard launches or hours of canyon carving.
Whether you're upgrading for more power or replacing a tired OEM clutch, ACT gives you the bite, strength, and feel to drive harder with confidence. No compromises, no excuses just parts that work when it matters.