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
| Make Vehicle | Model | Year |
|---|---|---|
|
1961-1972 Buick Skylark |
Skylark | 1961-1972 |
|
1965-1975 Chevrolet Bel Air |
Bel Air | 1965-1975 |
|
1965-1975 Chevrolet Biscayne |
Biscayne | 1965-1975 |
|
1969-1987 Chevrolet C/K 10 |
C/K 10 | 1969-1987 |
|
1988-2000 Chevrolet C/K 1500 |
C/K 1500 | 1988-2000 |
|
1969-1987 Chevrolet C/K 20 |
C/K 20 | 1969-1987 |
|
1988-2000 Chevrolet C/K 2500 |
C/K 2500 | 1988-2000 |
|
1969-1987 Chevrolet C/K 30 |
C/K 30 | 1969-1987 |
|
1994-1995 Chevrolet C1500 |
C1500 | 1994-1995 |
|
1967-1981 Chevrolet Camaro |
Camaro | 1967-1981 |
|
1966-1972 Chevrolet Caprice |
Caprice | 1966-1972 |
|
1964-1977 Chevrolet Chevelle |
Chevelle | 1964-1977 |
|
1966-1970 Chevrolet Corvette |
Corvette | 1966-1970 |
|
1964-1972 Chevrolet El Camino |
El Camino | 1964-1972 |
|
1965-1976 Chevrolet Impala |
Impala | 1965-1976 |
|
1975-1986 Chevrolet K5 Blazer |
K5 Blazer | 1975-1986 |
|
1969-1979 Chevrolet Nova |
Nova | 1969-1979 |
|
1969-1978 GMC C/K 15 |
C/K 15 | 1969-1978 |
|
1979-1986, 1988-2000 GMC C/K 1500 |
C/K 1500 | 1979-1986, 1988-2000 |
|
1969-1978 GMC C/K 25 |
C/K 25 | 1969-1978 |
|
1979-1986, 1988-2000 GMC C/K 2500 |
C/K 2500 | 1979-1986, 1988-2000 |
|
1973-1978 GMC C/K 35 |
C/K 35 | 1973-1978 |
|
1979-1986, 1988-2002 GMC C/K 3500 |
C/K 3500 | 1979-1986, 1988-2002 |
|
1965-1973 Oldsmobile Cutlass |
Cutlass | 1965-1973 |
|
1973 Oldsmobile Omega |
Omega | 1973 |
|
1959-1960, 1967-1970 Pontiac Bonneville |
Bonneville | 1959-1960, 1967-1970 |
|
1959-1960, 1970 Pontiac Catalina |
Catalina | 1959-1960, 1970 |
|
1970 Pontiac GTO |
GTO | 1970 |

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.