ACT ZM14-HDSS HD Street Sprung Clutch Kit for 2019-2025 Mazda MX-5 Miata

Vehicle Fitment

• 2019-2025 Mazda MX-5 Miata Club
• 2019-2025 Mazda MX-5 Miata Grand Touring
• 2020 Mazda MX-5 Miata 100th Anniversary Special Edition
• 2020 Mazda MX-5 Miata RF 100th Anniversary Special Edition
• 2025 Mazda MX-5 Miata 35th Anniversary

Fitment Notes

• This kit includes a matched ACT flywheel - confirm exact trim against ACT's current application chart, as some special-edition MX-5 variants may share the same drivetrain but differ in other equipment
• Manual transmission applications only

Features

• Heavy Duty pressure plate with exclusive diaphragm design for increased clamp load over OEM
• Four-stage heat-treated diaphragm spring for long-term durability
• Precision cover stampings for added rigidity and consistent performance
• Performance Street sprung disc with premium organic, high-copper friction material for better heat transfer
• Steel-backed disc lining for greater burst strength than OEM
• Reduced marcel design for faster shift action and quiet, smooth engagement
• Sprung hub provides driveline compliance for comfortable daily-driver use
• Includes a matched ACT flywheel for a complete, trouble-free installation
• 100% clamp load tested and dynamically computer balanced for smooth high-RPM reliability
• Newly manufactured components - not a rebuilt or reconditioned unit

Specifications

• Pressure Plate Type: Heavy Duty
• Disc Type: Performance Street Sprung
• Disc Material: Organic (high copper content)
• Warranty: 12 Months

Included Components

• 1x ACT Heavy Duty Clutch Pressure Plate
• 1x ACT Performance Street Sprung Clutch Disc
• 1x ACT Flywheel
• 1x Clutch Alignment Tool

Product Description

The ACT ZM14-HDSS Heavy Duty Performance Street Sprung Clutch Kit is ACT's most popular clutch for the 2019-2025 Mazda MX-5 Miata, including Club, Grand Touring, and special-edition trims like the 100th Anniversary and 35th Anniversary models. It pairs ACT's Heavy Duty pressure plate - engineered with a four-stage heat-treated diaphragm and precision cover stamping - with a Performance Street sprung disc that uses premium organic, high-copper friction material for improved heat transfer and burst strength over the factory clutch.

This combination delivers meaningful clamp load gains over OEM without the added pedal weight of ACT's Xtreme-level plates, making it well suited to MX-5 owners who want a clutch that holds more power while keeping the car pleasant to drive every day. The sprung-hub disc design and reduced marcel construction deliver smooth, quiet engagement with faster shift action than the factory clutch.

This kit includes a matched ACT flywheel, simplifying installation into a single, complete package. Every ACT clutch assembly is newly manufactured (not rebuilt), 100% clamp-load tested, and computer spin-balanced to within .25 oz-in for reliable performance across the RPM range.