ACT ZM15-HDSD Heavy Duty Performance Street Rigid Clutch Kit

The ACT ZM15-HDSD is a Heavy Duty Performance Street Rigid clutch kit engineered for drivers who demand increased torque capacity and faster shifts without sacrificing street driveability. This kit pairs ACT's most popular Heavy Duty pressure plate with a performance street rigid-hub disc for a race-proven upgrade over OEM.

Pressure Plate Features:

• Exclusive diaphragm design increases clamp load, reduces deflection, and maximizes clutch life
• All diaphragms undergo a four-stage heat-treating process for unparalleled durability
• Precision cover stampings provide rigidity and consistency
• 100% clamp load tested and dynamically computer balanced for smooth high-RPM reliability
• Pedal effort increase of 15–40% over stock for improved torque capacity and engagement quality

Performance Street Rigid-Hub Disc Features:

• Premium organic friction materials with high copper content for superior heat transfer and reduced fade
• Steel-backed lining for greater burst strength and durability
• Chrome-moly hub, heat-treated for strength and long service life
• Carefully selected rivet design and materials for maximum strength
• Minimum weight street disc design for faster, more precise shifts
• Race-proven performance with street manageability

Break-In Requirement: For organic street discs, a 300–500 mile break-in period with mild engagement (such as stop-and-go city driving) is recommended prior to spirited driving or track use.

ACT backs this clutch kit with the best one-year warranty in the industry, making the ZM15-HDSD an ideal upgrade for performance street and dual-purpose street/track applications.