ACT – SPR4 Sport/Race Rigid 4 Pad

AR1-SPR4 – Sport/Race Rigid 4 Pad

AR1-SPR4 kit features a Sport pressure plate for a nice upgrade.
ACT Sport 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 rigid race discs are made with high quality, ceramic friction materials.
The chrome-moly hub is heat-treated for strength and durability.
The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service.
With the 4-pad rigid race disc, engagement is harsher, but shifting is faster.
The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.

Feel:

Light to moderate pedal effort, aggressive engagement, increased gear rattle

Life:

Moderate friction life, extended by ACT’s exclusive diaphragm design, rigid design may increase spline wear

Quality:

Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance

Recommendation:

Recommended for race use only

Difference:

100% clamp load tested and dynamically computer balanced for smooth high RPM reliability