ACT 19-25 Mazda MX-5 Miata HD/Perf Street Rigid Clutch Kit

ZM15-HDSD 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. The ACT performance street rigid-hub discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. The chrome-moly hub is heat-treated for strength and durability. Rivet design and materials are carefully selected for maximum strength. These discs are the minimum weight street disc for faster shifts. ACT's street rigid-hub discs provide race-proven performance with street manageability. HD/Perf Street Rigid Light to moderate pedal effort, smooth positive engagement, increased gear rattle; Longer friction life, extended by ACT's exclusive diaphragm design, rigid design may increase spline wear; Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade; Recommended for street and race use; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT ZM15-HDSD HD/Perf Street Rigid Clutch Kit is engineered for Mazda MX-5 Miata applications requiring dependable street performance and increased clutch durability. This kit combines ACT’s Heavy Duty pressure plate with a performance street rigid-hub disc, delivering a balanced combination of responsive engagement, reliable clamp load, and smooth operation for both street and race use. It is designed to provide light to moderate pedal effort while improving clutch performance under demanding driving conditions.
The ACT Heavy Duty pressure plate uses an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize friction life. Each diaphragm undergoes a four-stage heat-treating process for consistent performance, while precision cover stampings improve rigidity and operating consistency. The pressure plate is 100% clamp-load tested and dynamically computer balanced to support smooth, high-RPM reliability. Its carefully engineered construction helps maintain dependable engagement during spirited driving and repeated heat cycles.
The performance street rigid-hub disc features premium organic friction materials with high copper content for improved heat transfer and reduced fade. Steel-backed linings add burst strength and durability, while the heat-treated chrome-moly hub provides increased strength for demanding use. Carefully selected rivet designs and materials help maximize disc integrity, and the minimum-weight disc construction supports faster shifts. The rigid design delivers positive engagement and race-proven performance with street manageability, though it may increase gear rattle and spline wear compared with a sprung-hub design. This ACT clutch kit is intended for select 2019-2025 Mazda MX-5 Miata applications and includes ACT’s industry-backed one-year warranty.

• “Excellence in Performance,” backed by the best one-year warranty in the industry!

Features:

• Heavy Duty pressure plate with ACT exclusive diaphragm design for increased clamp load, reduced deflection, and extended clutch life

• Four-stage heat-treated diaphragm and precision cover stamping for consistent, rigid pressure plate performance

• Performance street rigid-hub disc with premium organic friction material and high copper content for heat tolerance and reduced fade

• Steel-backed friction lining and heat-treated chrome-moly hub for improved durability and burst strength

• Minimum-weight disc design supports quicker shifting while maintaining street-friendly engagement

• 100% clamp-load tested and dynamically computer balanced for smooth reliability at high engine speeds

• Recommended for street and race use with light to moderate pedal effort and positive engagement

• Fits select 2019-2025 Mazda MX-5 Miata applications

Fitment:
Mazda MX-5 Miata 100th Anniversary Special Edition 2020
Mazda MX-5 Miata 35th Anniversary 2025
Mazda MX-5 Miata Club 2019
Mazda MX-5 Miata Club 2020
Mazda MX-5 Miata Club 2021
Mazda MX-5 Miata Club 2022
Mazda MX-5 Miata Club 2023
Mazda MX-5 Miata Club 2024
Mazda MX-5 Miata Club 2025
Mazda MX-5 Miata Grand Touring 2019
Mazda MX-5 Miata Grand Touring 2020
Mazda MX-5 Miata Grand Touring 2021
Mazda MX-5 Miata Grand Touring 2022
Mazda MX-5 Miata Grand Touring 2023
Mazda MX-5 Miata Grand Touring 2024
Mazda MX-5 Miata Grand Touring 2025
Mazda MX-5 Miata RF 100th Anniversary Special Edition 2020
Mazda MX-5 Miata RF Club 2019
Mazda MX-5 Miata RF Club 2020
Mazda MX-5 Miata RF Club 2021
Mazda MX-5 Miata RF Club 2022
Mazda MX-5 Miata RF Club 2023
Mazda MX-5 Miata RF Club 2024
Mazda MX-5 Miata RF Club 2025
Mazda MX-5 Miata RF Grand Touring 2019
Mazda MX-5 Miata RF Grand Touring 2020
Mazda MX-5 Miata RF Grand Touring 2021
Mazda MX-5 Miata RF Grand Touring 2022
Mazda MX-5 Miata RF Grand Touring 2023
Mazda MX-5 Miata RF Grand Touring 2024
Mazda MX-5 Miata RF Grand Touring 2025
Mazda MX-5 Miata Sport 2019
Mazda MX-5 Miata Sport 2020
Mazda MX-5 Miata Sport 2021
Mazda MX-5 Miata Sport 2022
Mazda MX-5 Miata Sport 2023
Mazda MX-5 Miata Sport 2024
Mazda MX-5 Miata Sport 2025