ACT ZM15-HDSD Heavy Duty Performance Street Rigid Clutch Kit for 2019-2025 Mazda MX-5 Miata

Fits 2019-2025 Mazda MX-5 Miata and Miata RF models across all trims including Sport, Club, and Grand Touring.

The ACT ZM15-HDSD clutch kit is engineered for drivers seeking increased clamping force and improved shifting response without sacrificing street driveability. This kit centers on the ACT Heavy Duty pressure plate, which utilizes a specialized diaphragm design to maximize clamp load while reducing deflection. Every diaphragm undergoes a rigorous four-stage heat-treating process to ensure consistent performance under high-stress conditions.

The included performance street rigid-hub disc is constructed with premium organic friction materials featuring a high copper content for superior heat dissipation. To ensure durability during high-RPM use, the lining is steel-backed for increased burst strength. The rigid chrome-moly hub is heat-treated for maximum strength, and the disc is designed with minimum weight to reduce inertia for faster, more precise gear changes.

• Manufacturer Part Number: ZM15-HDSD
• Kit Series: Heavy Duty / Performance Street Rigid
• Pressure Plate: Precision-stamped cover for maximum rigidity
• Disc Construction: Steel-backed organic with high copper content
• Hub Material: Heat-treated chrome-moly steel
• Included Components: Pressure plate, rigid street disc, release bearing, pilot bearing, and alignment tool
• Warranty: Manufacturer one-year limited warranty