ACT HD/Modified Street

HD Modified Street Z31-HDMM
ACT HD Modified Street Z31-HDMM
HD Modified Street Z31-HDMM

Advanced Clutch Technology Mazda HD/Modified Street

Made by ACT Performance Clutches

$333.00
List price: $378.80
You save: $45.80
Part #: Z31-HDMM

A low to moderate pedal feel smooth engagement with stock to low gear rattle Longer clutch life achieved through ACT's exclusive diaphragm design Premium organic friction materials for heat tolerance, faster recovery from overheating and prevents warping of mating surfaces Recommended for street and occasional race use All ACT pressure plates are dynamically computer balanced for smooth operation at high RPM

ACT HD/Modified Street 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-HDMM 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 modified spring-centered street discs feature premium organic friction material with high copper content for better heat transfer and steel-backed lining for burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. the heavy duty torsional dampening springs are stronger, in most cases, than standard springs and are provided in the best sizes and spring rates to suit the application. Modified street discs provide smooth engagement and quiet operation, with increased strength and reliability.

Special Notes

Z31-HDMM 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 modified spring-centered street discs feature premium organic friction material with high copper content for better heat transfer and steel-backed lining for burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. the heavy duty torsional dampening springs are stronger, in most cases, than standard springs and are provided in the best sizes and spring rates to suit the application. Modified street discs provide smooth engagement and quiet operation, with increased strength and reliability.