The ACT ZM14-HDG6 kit features ACT's most popular Heavy Duty pressure plate paired with a 6-pad, spring-centered race disc and flywheel for the 2019-2025 Mazda MX-5 Miata. ACT Heavy Duty pressure plates use an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life, with every diaphragm heat-treated in a four-stage process. The 6-pad, spring-centered race disc uses a spring center to properly damp torsional vibrations and resist failure under harsh conditions, with wraparound spring windows and thicker retainer stampings for added strength. Engagement is harsher than a street disc, but shifting is faster, and the design is recommended for larger clutch sizes that need to absorb more heat.
WarrantyInstallation Instructions
Technical Bulletin
Specifications:
- Kit Contents: Heavy Duty pressure plate + 6-pad spring-centered race disc + flywheel
- Part Number: ZM14-HDG6
"Excellence in Performance", backed by the best one-year warranty in the industry.
Vehicle Applications:
| Year | Make | Model | Trim |
|---|---|---|---|
| 2020 | Mazda | MX-5 Miata | 100th Anniversary Special Edition |
| 2025 | Mazda | MX-5 Miata | 35th Anniversary |
| 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 | Club |
| 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 | Grand Touring |
| 2020 | Mazda | MX-5 Miata | RF 100th Anniversary Special Edition |
| 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 Club |
| 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 | RF Grand Touring |
| 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 | Mazda | MX-5 Miata | Sport |
Frequently Asked Questions
What vehicles does the ACT ZM14-HDG6 clutch kit fit?
The ZM14-HDG6 fits the 2019-2025 Mazda MX-5 Miata across Club, Grand Touring, RF Club, RF Grand Touring, Sport, and special anniversary edition trims. See the Vehicle Applications table above for exact year and trim coverage.
What is a 6-pad, spring-centered race disc?
It's a race-oriented disc design that uses a spring center to damp torsional vibrations and resist failure under harsh use, trading smoother street engagement for faster shifting and higher heat capacity.
Does the ZM14-HDG6 kit include a flywheel?
Yes, this kit includes a flywheel along with the Heavy Duty pressure plate and 6-pad race disc.
Is there a California Prop 65 warning for this product?
No Prop 65 language is listed in the manufacturer data for this part number.