ACT

ACT 19-25 Mazda MX-5 Miata HD/Race Rigid 4 Pad Clutch Kit

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SKU: ACTZM15-HDR4
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ZM15-HDR4 kit features ACT's most popular Heavy Duty pressure plate. ...Read More

Price:
$478.99 $590.00
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches
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Product Details

Product Description
Part Numbers
Sizing & Fit
ZM15-HDR4 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. 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.

This Part Fits:

Year Make Model Submodel
2020 Mazda MX-5 Miata 100th Anniversary Special Edition
2025 Mazda MX-5 Miata 35th Anniversary
2019-2025 Mazda MX-5 Miata Club
2019-2025 Mazda MX-5 Miata Grand Touring
2020 Mazda MX-5 Miata RF 100th Anniversary Special Edition
2019-2025 Mazda MX-5 Miata RF Club
2019-2025 Mazda MX-5 Miata RF Grand Touring
2019-2025 Mazda MX-5 Miata Sport

Product Details

Product Description
Part Numbers
Sizing & Fit
ZM15-HDR4 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. 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.

This Part Fits:

Year Make Model Submodel
2020 Mazda MX-5 Miata 100th Anniversary Special Edition
2025 Mazda MX-5 Miata 35th Anniversary
2019-2025 Mazda MX-5 Miata Club
2019-2025 Mazda MX-5 Miata Grand Touring
2020 Mazda MX-5 Miata RF 100th Anniversary Special Edition
2019-2025 Mazda MX-5 Miata RF Club
2019-2025 Mazda MX-5 Miata RF Grand Touring
2019-2025 Mazda MX-5 Miata Sport

Product Details

Product Description
ZM15-HDR4 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. 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.

This Part Fits:

Year Make Model Submodel
2020 Mazda MX-5 Miata 100th Anniversary Special Edition
2025 Mazda MX-5 Miata 35th Anniversary
2019-2025 Mazda MX-5 Miata Club
2019-2025 Mazda MX-5 Miata Grand Touring
2020 Mazda MX-5 Miata RF 100th Anniversary Special Edition
2019-2025 Mazda MX-5 Miata RF Club
2019-2025 Mazda MX-5 Miata RF Grand Touring
2019-2025 Mazda MX-5 Miata Sport

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