ACT HD/Race Sprung 4 Pad

HD Race Sprung 4 Pad Z31-HDG4
ACT HD Race Sprung 4 Pad Z31-HDG4
HD Race Sprung 4 Pad Z31-HDG4

Advanced Clutch Technology Mazda HD/Race Sprung 4 Pad

Made by ACT Performance Clutches

$372.00
List price: $444.96
You save: $72.96
Part #: Z31-HDG4

A low to moderate pedal feel aggressive engagement with stock to low to moderate gear rattle Longer clutch life achieved through ACT's exclusive diaphragm design Premium ceramic friction materials provide low wear rates and high heat tolerance Recommended for high horsepower street or race use All ACT pressure plates are dynamically computer balanced for smooth operation at high RPM

ACT HD/Race Sprung 4 Pad fits the following vehicles:

Year Make Model Country Configuration Notes Garage
1987 Mazda 323 US view configs Fits up till 6/87
In garage
1987 Mazda 323 DX US view configs Fits up till 6/87
In garage
1987 Mazda 323 LX US view configs Fits up till 6/87
In garage
1986 Mazda 323 US view configs
In garage
1986 Mazda 323 DX US view configs
In garage
1986 Mazda 323 LX US view configs
In garage
1985 Mazda GLC US view configs
In garage
1985 Mazda GLC DX US view configs
In garage
1985 Mazda GLC LX US view configs
In garage
1984 Mazda GLC US view configs
In garage
1984 Mazda GLC DX US view configs
In garage
1984 Mazda GLC LX US view configs
In garage
1983 Mazda GLC US view configs
In garage
1983 Mazda GLC Custom US view configs
In garage
1983 Mazda GLC Custom L US view configs
In garage
1983 Mazda GLC Sport US view configs
In garage
1982 Mazda GLC US view configs
In garage
1982 Mazda GLC Custom US view configs
In garage
1982 Mazda GLC Custom L US view configs
In garage
1982 Mazda GLC Sport US view configs
In garage
1981 Mazda GLC US view configs
In garage
1981 Mazda GLC Custom US view configs
In garage
1981 Mazda GLC Custom L US view configs
In garage
1981 Mazda GLC Sport US view configs
In garage

Technical Notes

Z31-HDG4 kit features ACT's most popular Heavy Duty pressure plate. 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 4-pad spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT’s 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.

Special Notes

Z31-HDG4 kit features ACT's most popular Heavy Duty pressure plate. 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 4-pad spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT?s 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.