Fits 1993-1995 Mazda RX-7 (Base, R1, R2, and Touring models).

The ACT ZX6-HDG6 Heavy Duty race clutch kit is engineered for high-performance applications where rapid shifting and high heat capacity are critical. This system utilizes the ACT Heavy Duty pressure plate, featuring a four-stage heat-treated diaphragm and precision cover stampings for increased clamp load, reduced deflection, and consistent pedal feel. The 6-pad spring-centered race disc is designed to damp torsional vibrations while maintaining durability under harsh conditions using wraparound spring windows and thickened retainer stampings.

This kit includes the Monoloc one-piece wedge collar, a hardened Chrome-moly steel upgrade that replaces the standard two-piece pull-type collar. This provides uniform loading and maintains proper bearing alignment regardless of driving style. While engagement is more aggressive than a street disc, it significantly improves shifting speed and thermal management for high-demand builds.

• Manufacturer Part Number: ZX6-HDG6
• Pressure Plate: Heavy Duty (HD) with heat-treated diaphragm
• Disc Style: 6-Pad Spring-Centered Race Disc
• Hardware: Includes Monoloc Chrome-moly steel wedge collar
• Engagement: Aggressive engagement with fast shifting capability

Fits 2006-2013 Mazda 3 and 6 Mazdaspeed models (2.3L Turbo).

The ACT ZX5-XTSS clutch kit is engineered for high-performance street use, featuring an Xtreme pressure plate paired with a Performance Street Sprung disc. This combination provides a significant increase in clamp load and torque capacity while maintaining the smooth engagement required for daily driving. The Xtreme pressure plate utilizes a proprietary diaphragm design that undergoes a four-stage heat-treating process to ensure consistent pedal feel and maximum service life.

The included Performance Street disc is constructed with premium organic friction materials containing high copper content for superior heat dissipation. Steel-backed linings offer increased burst strength, and a reduced marcel design enables quicker, more precise gear changes. This sprung-hub kit reduces drivetrain vibration and noise for a balance of durability and drivability.

• Manufacturer Part Number: ZX5-XTSS
• Pressure Plate: Xtreme (High clamp load, precision cover stamping)
• Disc Type: Performance Street Sprung (Steel-backed organic)
• Increased torque capacity and reduced deflection
• Includes heavy-duty pressure plate and street-spec friction disc
• Backed by ACT's one-year limited warranty

Fits 2006-2007 Mazda 6 Mazdaspeed and 2007-2013 Mazda 3 Mazdaspeed models. The ACT ZX5-HDSS kit is engineered for drivers seeking increased torque capacity and durability without sacrificing street driveability. This system pairs ACT's Heavy Duty pressure plate with their most popular Performance Street sprung disc.

The Heavy Duty pressure plate utilizes an exclusive diaphragm design that undergoes a rigorous four-stage heat-treating process to maximize clamp load and service life while reducing deflection. Precision-stamped covers provide the structural rigidity needed for consistent engagement. For the friction surface, the Performance Street disc features premium organic materials with high copper content for improved heat transfer and steel-backed linings for superior burst strength. The disc is designed with reduced marcel to enable faster shift action and increased reliability under load.

• Heavy Duty pressure plate provides increased clamp load over the factory unit
• Performance Street sprung disc features high-copper organic friction material
• Steel-backed lining for enhanced durability and high-RPM burst strength
• Four-stage heat-treated diaphragm for consistent performance and longevity
• Reduced marcel design for quicker, more precise gear changes
• Manufacturer Part Number: ZX5-HDSS

Fits select 2006-2013 Mazda 3 and Mazda 6 Mazdaspeed models. This ACT ZX5-HDG6 kit is engineered for high-performance driving and racing applications where faster shifting and increased heat capacity are required.

The ZX5-HDG6 kit centers around ACT's Heavy Duty pressure plate, featuring an exclusive heat-treated diaphragm design. This four-stage heat-treating process increases clamp load while reducing deflection to maximize overall clutch life. Precision cover stampings ensure the rigidity and consistency needed for aggressive driving. Paired with a 6-pad spring-centered race disc, this setup utilizes a spring-center hub to effectively damp torsional vibrations and resist component failure under harsh conditions.

• Manufacturer Part Number: ZX5-HDG6
• Pressure Plate: Heavy Duty design with precision cover stampings and heat-treated diaphragm
• Clutch Disc: 6-pad race disc with spring-center for vibration damping
• Hardware & Construction: Wraparound spring windows and thicker retainer stampings for increased strength
• Performance: Increased clamp load and faster shifting engagement
• Warranty: Manufacturer one-year warranty

Vehicle Fitment:

• 2007-2013 Mazda 3 Mazdaspeed
• 2006-2007 Mazda 6 Mazdaspeed

Fits 2006-2013 Mazda 3 and Mazda 6 Mazdaspeed models.

The ACT ZX4-XTG6 XT/Race Sprung 6-Pad Clutch Kit is engineered for high-torque applications where fast shifting and heat management are critical. The Xtreme (XT) pressure plate utilizes an exclusive diaphragm design that undergoes a four-stage heat-treating process to maximize clamp load, reduce deflection, and extend clutch life. Precision cover stampings ensure the rigidity and consistency required for aggressive driving.

The included 6-pad spring-centered race disc is designed to absorb high heat and properly damp torsional vibrations. It features wraparound spring windows and thickened retainer stampings to eliminate stress concentrations and resist failure under harsh track conditions. This setup provides the rapid engagement needed for competitive use, though it is noticeably harsher than standard street kits.

• Manufacturer Part Number: ZX4-XTG6
• Pressure Plate Type: Xtreme (XT)
• Disc Style: 6-Pad Spring-Centered Race Disc
• Construction: Four-stage heat-treated diaphragm and precision-stamped cover
• Durability: Wraparound spring windows and thick retainer stampings
• Performance: Increased clamp load and faster shifting for high-heat environments
• Warranty: ACT one-year manufacturer warranty

Fits 2006-2013 Mazda 3 and 6 Mazdaspeed models.

The ACT ZX4-HDSS Heavy Duty Performance Street Sprung Clutch Kit is engineered for drivers seeking increased torque capacity without sacrificing street drivability. This kit combines ACT's Heavy Duty pressure plate with a Performance Street disc to provide a firmer pedal feel and improved engagement. The pressure plate features an exclusive diaphragm design that undergoes a four-stage heat-treating process to maximize clamp load and reduce deflection, while precision-stamped covers ensure the rigidity required for consistent performance.

The Performance Street disc is constructed with premium organic materials and a high copper content for superior heat transfer. Steel-backed linings increase burst strength and durability, while a reduced marcel design enables faster shift action. This sprung-center disc helps dampen drivetrain vibrations, making it an ideal choice for daily-driven vehicles with moderate modifications.

• Manufacturer Part Number: ZX4-HDSS
• Includes Heavy Duty pressure plate and Performance Street sprung disc
• Diaphragm design increases clamp load and maximizes clutch life
• Premium organic friction material with high copper content for heat dissipation
• Steel-backed linings for increased burst strength
• Reduced marcel for faster, more precise gear changes
• Precision cover stampings provide rigidity and consistency
• Manufacturer one-year warranty

Vehicle Fitment:

Fits 2006-2013 Mazda 3 and Mazda 6 Mazdaspeed models.

The ACT ZX4-HDG6 clutch kit is engineered for high-performance applications where rapid shifting and increased clamp load are essential. This kit pairs ACT's Heavy Duty (HD) pressure plate with a 6-pad spring-centered race disc, providing a significant upgrade over factory components for track-driven and high-torque vehicles. While engagement is naturally harsher than a street-spec kit, the reward is faster gear transitions and superior heat capacity.

The Heavy Duty pressure plate utilizes a proprietary diaphragm design that undergoes a rigorous four-stage heat-treating process. This ensures consistent pedal feel, reduced deflection, and maximum clutch life. Precision cover stampings provide the necessary rigidity for high-stress driving. The included 6-pad race disc features a spring-centered hub to dampen torsional vibrations, protected by wraparound spring windows and thickened retainer stampings for increased reliability under harsh conditions.

• Heavy Duty (HD) pressure plate increases clamp load and reduces deflection
• 6-pad sprung race disc designed for fast shifting and optimal heat absorption
• Heat-treated diaphragm for long-term durability and performance consistency
• Wraparound spring windows and thick retainer stampings prevent spring failure
• Spring-centered hub protects drivetrain by damping torsional vibrations
• Manufacturer Part Number: ZX4-HDG6
• Backed by a one-year manufacturer warranty

Fits 1983-1991 Mazda RX-7 models, including Base, GS, GSL, GSL-SE, GTU, GTUs, GXL, LX, and SE trims.

The ACT ZX2-HDSS kit combines a Heavy Duty pressure plate with a Performance Street sprung disc, offering a significant upgrade over the factory clutch for spirited driving and street performance. The Heavy Duty pressure plate utilizes an exclusive diaphragm design that undergoes a four-stage heat-treating process to increase clamp load, reduce pedal deflection, and maximize service life. Precision-stamped covers provide the rigidity needed for consistent engagement under load.

The Performance Street disc is engineered for durability and thermal management, featuring premium organic friction materials with high copper content for superior heat transfer. Steel-backed linings increase burst strength, while a reduced marcel design allows for faster shift action. The sprung-hub center helps dampen drivetrain vibrations for a more refined driving experience compared to unsprung alternatives.

• Manufacturer Part Number: ZX2-HDSS
• Heavy Duty pressure plate for increased clamp load and durability
• High-copper organic street disc for improved heat dissipation
• Steel-backed linings for high-RPM burst strength
• Reduced marcel for quicker, more precise gear changes
• Four-stage heat-treated diaphragm for long-term reliability

Fits 1983-1991 Mazda RX-7 across multiple trims including Base, GS, GSL, GSL-SE, GTU, and GXL.

The ACT ZX2-HDR6 HD/Race clutch kit is engineered for dedicated racing applications where fast shifts and high heat capacity are critical. This kit pairs ACT's Heavy Duty pressure plate with a 6-pad rigid race disc to provide a significant increase in clamp load and torque capacity. The pressure plate features a proprietary diaphragm design that undergoes a four-stage heat-treating process to reduce deflection and maximize service life, while precision cover stampings ensure consistent performance under load.

The 6-pad rigid race disc uses high-quality ceramic friction materials and a heat-treated chrome-moly hub for maximum strength. Designed without springs, this lightweight rigid hub allows for the quickest possible gear changes. Note that while shifting speed is improved, engagement will be significantly harsher than a street-spec disc. This setup is ideal for larger clutch sizes that require superior heat absorption during repeated high-stress cycling.

• Manufacturer Part Number: ZX2-HDR6
• Pressure Plate Type: Heavy Duty
• Disc Style: 6-Pad Rigid Race Disc
• Friction Material: Ceramic
• Hub Construction: Heat-treated Chrome-moly
• Warranty: Manufacturer 1-year warranty

Fits select 1983-1991 Mazda RX-7 models across various trims including Base, GS, GSL-SE, GTU, and GXL.

The ACT ZX2-HDG6 Heavy Duty Race clutch kit is engineered for drivers who demand faster shifting and high heat capacity. At the core of this kit is the Heavy Duty pressure plate, featuring an exclusive diaphragm design that increases clamp load while reducing deflection. Every diaphragm undergoes a specialized four-stage heat-treating process to ensure consistent performance under the stresses of performance driving. Precision cover stampings provide the necessary rigidity for stable clutch engagement.

This kit utilizes a 6-pad, spring-centered race disc designed to damp torsional vibrations and resist failure in harsh environments. The spring retainers feature wraparound windows and thicker stampings to increase strength and reduce stress concentrations. While engagement is naturally harsher than a street-rated disc, the 6-pad design allows for significantly faster gear changes and superior heat absorption.

• Manufacturer Part Number: ZX2-HDG6
• Pressure Plate Type: Heavy Duty
• Disc Style: 6-Pad Spring-Centered Race Disc
• Increased clamp load and reduced deflection
• 4-stage heat-treated diaphragm for maximum durability
• Wraparound spring windows for improved support
• One-year manufacturer warranty

Fits 2004-2011 Mazda RX-8 (Base, R3, Grand Touring, Sport, Touring, Shinka, and 40th Anniversary Edition).

The ACT ZM8-HDSS kit combines a Heavy Duty pressure plate with a Performance Street sprung disc to deliver increased torque capacity without sacrificing daily drivability. The pressure plate utilizes an exclusive diaphragm design that undergoes a four-stage heat-treating process, ensuring consistent clamp load and minimal deflection under high-performance use. To provide maximum rigidity and predictable engagement, each pressure plate features precision-stamped cover assemblies.

The Performance Street disc is engineered for durability and heat management, utilizing premium organic materials with high copper content. Steel-backed linings increase burst strength, while a reduced marcel design facilitates faster gear transitions. This kit is ideal for RX-8 owners seeking a reliable upgrade for street performance or occasional track use.

• Manufacturer Part Number: ZM8-HDSS
• Heavy Duty pressure plate provides increased clamp load over OE
• Sprung-hub performance street disc for smooth engagement and reduced vibration
• Precision-stamped cover for maximum structural rigidity
• Premium organic friction material with high copper content for heat transfer
• Reduced marcel for quicker shift action
• One-year manufacturer warranty included

Fits 2004-2011 Mazda RX-8 models, including Base, R3, Grand Touring, Sport, Touring, and Shinka editions.

The ACT ZM8-HDG6 HD/Race clutch kit is engineered for high-performance applications requiring increased torque capacity and faster shifting. At the core of this kit is the ACT Heavy Duty pressure plate, which uses an exclusive diaphragm design and a four-stage heat-treating process. This construction maximizes clamp load and reduces deflection, ensuring consistent performance and rigidity through precision cover stampings.

The included 6-pad ceramic race disc features a spring-centered hub to damp torsional vibrations and reduce stress on the drivetrain under harsh conditions. While engagement is more aggressive than a standard street clutch, the ceramic friction material provides the high heat capacity necessary for racing. For added reliability, the disc utilizes wraparound spring windows and thick retainer stampings to prevent spring failure.

• Manufacturer Part Number: ZM8-HDG6
• Heavy Duty pressure plate for increased clamp load and pedal feel
• 6-pad ceramic race disc with spring-centered hub
• Heat-treated diaphragm for long-term consistency and durability
• Precision cover stampings provide maximum rigidity
• Designed for faster shifting and high heat absorption in race environments

Fits 2006-2015 Mazda MX-5 Miata models including Base, Club Spec, Sport, SV, and Touring.

The ACT ZM5-HDSS kit features a combination of the Heavy Duty pressure plate and the Performance Street sprung disc. This setup is engineered to increase clamp load and maximize clutch life while maintaining a street-friendly pedal feel. The diaphragm design reduces deflection, and each unit undergoes a specialized four-stage heat-treating process to ensure long-term performance under demanding conditions.

The included Performance Street disc uses premium organic friction materials with high copper content to facilitate better heat transfer. Steel-backed linings are utilized to provide higher burst strength and overall durability. Designed with reduced marcel, this disc enables faster shift action to perfectly complement the high-clamp pressure plate.

• Exclusive diaphragm design for increased clamp load and reduced deflection
• Four-stage heat-treated diaphragm for consistent performance
• Precision cover stampings provide maximum rigidity
• High copper content organic friction material for superior heat dissipation
• Steel-backed lining for enhanced burst strength
• Reduced marcel for faster shifting response
• Manufacturer Part Number: ZM5-HDSS

Fits 2006-2015 Mazda MX-5 Miata models including Club, Grand Touring, Sport, and Touring trims.

The ACT ZM4-HDSS Heavy Duty Performance Street Sprung Clutch Kit is engineered for drivers seeking increased torque capacity without sacrificing street driveability. This kit features ACT's Heavy Duty pressure plate, which employs an exclusive diaphragm design to increase clamp load and maximize service life. Each diaphragm undergoes a rigorous four-stage heat-treating process to ensure consistent performance and reduced deflection under load.

The included Performance Street disc utilizes premium organic friction materials with high copper content for improved heat transfer. Steel-backed linings provide high burst strength, while the reduced marcel design enables faster shift action. The sprung-hub construction helps dampen driveline vibrations, making this an ideal choice for daily driven vehicles that see occasional spirited use.

• Manufacturer Part Number: ZM4-HDSS
• Pressure Plate Type: Heavy Duty with precision cover stampings for maximum rigidity
• Disc Type: Performance Street Sprung (Organic)
• Construction: Steel-backed linings for increased durability and high-RPM burst strength
• Heat Management: High copper content in friction material for superior heat dissipation
• Shift Feel: Reduced marcel for quicker, more positive engagement
• Warranty: Manufacturer one-year warranty

Fits 2006-2015 Mazda MX-5 Miata models.

The ACT ZM4-HDG6 Heavy Duty Race clutch kit is engineered for performance-driven applications requiring increased torque capacity and faster shifting. This kit features ACT's popular Heavy Duty pressure plate, which utilizes a proprietary diaphragm design to maximize clamp load while reducing deflection. Every diaphragm undergoes a specialized four-stage heat-treating process to ensure consistent pedal feel and long-term durability.

• ZM4-HDG6 Kit Components: Includes a Heavy Duty pressure plate and a 6-pad spring-centered race disc.
• Precision Engineering: Pressure plates feature precision cover stampings for improved rigidity and consistent engagement across the service life.
• Race-Ready Disc: The 6-pad ceramic race disc offers high heat capacity and faster shifting, making it ideal for aggressive driving and larger clutch sizes.
• Enhanced Strength: Spring retainers use wraparound windows and thicker stampings to provide superior spring support and reduce stress concentrations.
• Torsional Damping: The spring-centered hub is designed to properly damp vibrations, protecting the drivetrain even under harsh conditions.

Please note that while this kit provides rapid gear changes and high strength, engagement will be significantly harsher than a factory unit. This product is backed by ACT's one-year limited warranty.

Fits 1990-2005 Mazda Miata including Base, LS, SE, and Mazdaspeed models.

The ACT ZM2-XTSS Xtreme/Performance Street Sprung Clutch Kit is designed for demanding drivers who require significantly increased clamp load and torque capacity. This kit features an ACT Xtreme pressure plate, which utilizes a proprietary diaphragm design and a specialized four-stage heat-treating process to maximize clutch life and minimize deflection. Precision-stamped covers ensure the rigidity and consistency required for high-performance applications.

The included Performance Street disc is constructed from premium organic materials with a high copper content for improved heat transfer. A steel-backed lining increases burst strength and durability, while the reduced marcel design enables faster, more positive shift action. The sprung-center hub helps dampen driveline vibrations for quieter operation without compromising overall strength or reliability.

• Manufacturer Part Number: ZM2-XTSS
• Pressure Plate Type: Xtreme (High clamp load)
• Clutch Disc Type: Performance Street (Sprung center)
• Friction Material: Steel-backed organic with high copper content
• Construction: 4-stage heat-treated diaphragm and precision-stamped cover
• Shift Performance: Reduced marcel for faster engagement

Fits 1990-2005 Mazda Miata including Base, LS, SE, and Mazdaspeed models.

The ACT ZM2-XTG6 XT/Race clutch kit is engineered for competitive driving and track use, providing the high clamp load necessary for modified engines. The Xtreme pressure plate features an exclusive diaphragm design that undergoes a four-stage heat-treating process, significantly increasing clamp force while reducing deflection for consistent performance. Precision-stamped covers ensure the rigidity required for high-RPM operation.

• 6-pad spring-centered race disc designed for fast shifting and high heat absorption.
• Xtreme pressure plate delivers increased clamp load and pedal feel.
• Spring-center construction damps torsional vibrations to reduce drivetrain stress.
• Wraparound spring windows and heavy-duty retainer stampings for increased strength.
• Faster engagement and improved durability under harsh racing conditions.
• Manufacturer Part Number: ZM2-XTG6.

Note: Due to the aggressive friction material and increased pressure plate clamp load, engagement will be significantly harsher than the factory clutch.

Fits 1990-2005 Mazda Miata models across all trims including Base, LS, M Edition, and Mazdaspeed.

The ACT ZM2-HDSS clutch kit is a comprehensive upgrade for Miata owners seeking increased torque capacity and improved pedal feel without sacrificing street driveability. This kit pairs ACT's Heavy Duty pressure plate with a Performance Street sprung disc to deliver a significant increase in clamp load while maintaining smooth engagement characteristics.

• Heavy Duty Pressure Plate: Utilizes an exclusive diaphragm design and a four-stage heat-treating process to maximize clamp load, reduce deflection, and ensure long-term reliability.
• Performance Street Disc: Constructed with premium organic friction materials featuring high copper content for efficient heat transfer and steel-backed linings for superior burst strength.
• Precision Engineering: The pressure plate features precision cover stampings for rigidity, while the disc's reduced marcel design allows for faster, more positive shift action.
• Complete Kit: Includes the ZM2-HDSS components necessary to replace worn factory hardware and handle higher-than-stock performance demands.
• Manufacturer Part Number: ZM2-HDSS

Fits select 1990-2005 Mazda Miata (Base, LS, M Edition, Mazdaspeed, and SE).

The ACT ZM2-HDR4 HD/Race Rigid 4 Pad Clutch Kit is engineered for competitive use where shifting speed and high-heat durability are paramount. This kit features the ACT Heavy Duty pressure plate, which uses an exclusive diaphragm design to increase clamp load and minimize deflection. Every diaphragm undergoes a four-stage heat-treating process to ensure consistent pedal feel and long-term reliability. Precision-stamped covers provide the structural rigidity needed for high-RPM applications.

The 4-pad rigid race disc is built with premium ceramic friction materials and a heat-treated chrome-moly hub for exceptional strength. Its lightweight, rigid design reduces rotational inertia, enabling faster shifts. While engagement is significantly harsher than a standard organic disc, this configuration is ideal for the smaller disc sizes and high-response requirements of the Mazda B-series engines.

• Manufacturer Part Number: ZM2-HDR4
• Pressure Plate Type: Heavy Duty (HD)
• Disc Design: 4-Pad Rigid Race Disc
• Friction Material: Ceramic
• Hub Material: Heat-treated Chrome-moly
• Performance: Harsher engagement with rapid shifting capability

The ACT ZM2-HDG6 Heavy Duty Race Sprung 6-Pad Clutch Kit is designed for 1990-2005 Mazda Miata owners who demand aggressive engagement and high thermal capacity. This kit centers on ACT's Heavy Duty pressure plate, which utilizes a specialized diaphragm design to increase clamp load and reduce deflection for maximized clutch life.

• Precision Pressure Plate: Features a four-stage heat-treating process on all diaphragms and precision cover stampings to ensure rigidity, consistency, and long-term durability.
• 6-Pad Race Disc: Ceramic friction surfaces provide high heat absorption and faster shifting, while the spring-centered hub damps torsional vibrations to protect the drivetrain under harsh conditions.
• Heavy Duty Hardware: Spring retainers utilize wraparound windows and thick retainer stampings to provide superior spring support and reduce stress concentrations.
• Fitment: Compatible with all 1990-2005 Mazda Miata submodels, including Base, LS, SE, and Mazdaspeed.

Kit Includes: ACT Heavy Duty Pressure Plate, 6-Pad Sprung Race Disc (ZM2-HDG6).

Fits 1990-2005 Mazda Miata models (Base, Mazdaspeed, LS, SE, M Edition, and Shinsen). This ZM2-HDG4 kit combines ACT’s Heavy Duty pressure plate with a 4-pad spring-centered race disc to provide increased clamp load and significantly faster shift speeds for high-performance use.

The Heavy Duty pressure plate utilizes a proprietary diaphragm design that undergoes a four-stage heat-treating process, ensuring consistent pedal feel and reduced deflection over the life of the clutch. Precision-stamped covers provide the rigidity necessary for high-RPM stability. The included 4-pad ceramic race disc features a spring-centered hub to damp torsional vibrations and protect the drivetrain, while the wraparound spring windows and thickened retainer stampings offer maximum support for the springs under harsh conditions.

• Increases clamp load for improved torque capacity and reduced slip
• 4-pad ceramic race disc allows for faster shifting and high heat tolerance
• Spring-centered hub reduces drivetrain shock and vibration
• Exclusive diaphragm heat-treatment for long-term performance consistency
• Precision-stamped cover and heavy-duty spring retainers for added strength
• Manufacturer Part Number: ZM2-HDG4

Fits 2016-2018 Mazda MX-5 Miata (ND) models including Club, Grand Touring, RF, and Sport.

The ACT ZM10-HDSS clutch kit combines a Heavy Duty pressure plate with a Performance Street sprung disc to deliver a significant increase in torque capacity without sacrificing street driveability. The Heavy Duty pressure plate features a proprietary diaphragm design that increases clamp load while reducing deflection, ensuring consistent pedal feel and maximized clutch life. All ACT diaphragms undergo a rigorous four-stage heat-treating process to maintain performance under high-stress conditions.

The included Performance Street disc is engineered for fast shifts and thermal management, utilizing premium organic materials with high copper content for superior heat transfer. Steel-backed linings provide increased burst strength, while the reduced marcel design allows for quicker engagement to complement the pressure plate's precision cover stampings and rigidity.

• Manufacturer Part Number: ZM10-HDSS
• Pressure Plate: Heavy Duty (HD) with increased clamp load
• Clutch Disc: Performance Street (SS) sprung hub
• Friction Material: Organic with high copper content and steel backing
• Construction: Four-stage heat-treated diaphragm and precision stamped cover
• Performance: Reduced marcel for faster shift action and high burst strength

Fits 1990-1993 Mazda Miata (Base, LE, and SE models).

The ACT ZM1-XTSS clutch kit is engineered for drivers demanding higher clamp loads and increased durability without sacrificing street driveability. This kit centers around the Xtreme pressure plate, which utilizes an exclusive diaphragm design and a four-stage heat-treating process to maximize clutch life and reduce deflection under load. Precision cover stampings ensure the rigidity and consistency required for high-performance applications.

The included Performance Street disc is constructed with premium organic friction materials featuring high copper content for superior heat transfer. Steel-backed linings provide increased burst strength, while the reduced marcel design enables faster shift action to complement the increased pressure plate clamp load. This sprung-center kit provides quiet operation with the reliability needed for spirited street and entry-level track use.

• Manufacturer Part Number: ZM1-XTSS
• Pressure Plate Type: Xtreme
• Disc Type: Performance Street Sprung
• Diaphragm material: 4-stage heat-treated spring steel
• Friction Material: High-copper organic with steel backing
• Fitment: Direct replacement for 1990-1993 Mazda Miata

Fits 1990-1993 Mazda Miata models (Base, LE, and SE). This ACT ZM1-HDSS Heavy Duty Performance Street Clutch Kit provides a significant upgrade over the factory assembly, balancing increased clamp load with the smooth engagement required for daily street use.

The kit features ACT’s Heavy Duty pressure plate, which utilizes a proprietary diaphragm design and a specialized four-stage heat-treating process to reduce deflection and maximize service life. Precision-stamped covers provide the rigidity needed for consistent pedal feel. The Performance Street disc is engineered with premium organic friction materials and high copper content to facilitate better heat transfer, while a steel-backed lining ensures greater burst strength during spirited driving.

• Manufacturer Part Number: ZM1-HDSS
• Pressure Plate Type: Heavy Duty for increased clamp load and durability
• Disc Type: Performance Street Sprung for smooth engagement and reduced vibration
• Materials: High-copper organic friction material with steel-backed linings
• Design: Reduced marcel for faster shift action and improved reliability
• Diaphragm: Four-stage heat-treated for maximum performance consistency

Vehicle Fitment:

Fits 1990-1993 Mazda Miata. The ACT ZM1-HDG4 Heavy Duty Race clutch kit is engineered for drivers who prioritize fast shifting and high torque capacity. This kit combines ACT's popular Heavy Duty pressure plate with a 4-pad spring-centered race disc, offering a significant increase in clamp load over the factory setup while maintaining structural integrity under harsh racing conditions.

The Heavy Duty pressure plate features an exclusive diaphragm design that undergoes a four-stage heat-treating process for consistent performance. Precision cover stampings ensure rigidity, reducing deflection and maximizing clutch life. The included 4-pad race disc uses a spring-center hub to damp torsional vibrations, protecting your drivetrain while enabling the aggressive engagement required for competitive use.

• Manufacturer Part Number: ZM1-HDG4
• Heavy Duty pressure plate increases clamp load and reduces deflection
• 4-pad ceramic race disc for high heat capacity and rapid shifting
• Spring-centered hub damps torsional vibrations for quieter operation
• Precision-stamped cover for maximum rigidity and consistency
• Wraparound spring windows and thicker retainer stampings for increased strength
• Diaphragm heat-treated for long-term durability and performance

Fits 1986-1991 Mazda RX-7 Turbo and 10th Anniversary models.

The ACT Z65-XTG6 XT/Race clutch kit is engineered for demanding drivers who require maximum clamp load and rapid shifting. This kit combines an Xtreme pressure plate with a 6-pad spring-centered race disc to handle the unique heat and rotational demands of high-performance rotary engines. The Xtreme pressure plate utilizes a proprietary diaphragm design that significantly increases clamp load while reducing deflection, ensuring consistent engagement through every gear.

Construction features include precision cover stampings for structural rigidity and diaphragms that undergo a specialized four-stage heat-treating process. The 6-pad race disc is designed with a spring-centered hub to damp torsional vibrations and protect the drivetrain during harsh use. With wraparound spring windows and thickened retainer stampings, this kit provides superior strength and reliability compared to standard designs.

• Manufacturer Part Number: Z65-XTG6
• Xtreme pressure plate for maximum clamp load and durability
• 6-pad spring-centered race disc for high heat capacity and fast shifts
• Heat-treated diaphragms for long-term performance consistency
• Heavy-duty spring retainers with wraparound windows to reduce stress
• Aggressive engagement suitable for track and high-power applications
• Includes necessary hardware for installation

Fits 1986-1991 Mazda RX-7 Turbo and 1988 10th Anniversary models.

The ACT Z65-HDSS kit is engineered for drivers seeking a significant increase in clamp load and torque capacity without sacrificing street driveability. This kit pairs ACT's Heavy Duty pressure plate with their most popular Performance Street sprung disc. The pressure plate features an exclusive diaphragm design that undergoes a rigorous four-stage heat-treating process to reduce deflection and maximize service life, while precision-stamped covers ensure consistent engagement.

The Performance Street disc is constructed with premium organic friction materials and high copper content for superior heat transfer. Steel-backed linings provide high burst strength, and the reduced marcel design allows for faster shift action. This combination delivers a firm pedal feel and reliable performance for high-performance street use.

• Manufacturer Part Number: Z65-HDSS
• Pressure Plate: Heavy Duty diaphragm design for increased clamp load
• Disc Type: Performance Street sprung organic disc
• Materials: High copper content for heat dissipation and steel-backed linings for durability
• Heat Treatment: 4-stage heat-treated diaphragm for long-term reliability
• Shift Action: Reduced marcel for quicker engagement and gear changes
• Warranty: Manufacturer one-year warranty

Fits 1986-1991 Mazda RX-7 Turbo and 10th Anniversary models.

The ACT Z65-HDR6 Heavy Duty Race clutch kit is engineered for high-performance applications where rapid shifting and high heat capacity are required. This kit features the ACT Heavy Duty pressure plate, which utilizes an exclusive diaphragm design to increase clamp load and reduce deflection. Each diaphragm undergoes a specialized four-stage heat-treating process to ensure consistent performance and extended service life.

The included 6-pad rigid race disc is built with high-quality ceramic friction materials and a heat-treated chrome-moly hub for maximum strength. While engagement is significantly harsher than a street-spec disc, the lightweight rigid design allows for faster shifts and better heat absorption in larger clutch sizes.

• Heavy Duty pressure plate provides increased clamp load and precision cover stampings for rigidity
• 6-pad rigid race disc enables quicker shifts and high heat resistance
• Heat-treated chrome-moly hub for durability under racing conditions
• Ceramic friction materials for reliable engagement in high-torque environments
• Manufacturer Part Number: Z65-HDR6
• Backwards compatible with 1986-1991 Mazda RX-7 Turbo drivetrains
• Backed by a one-year manufacturer warranty

Fits 1986-1991 Mazda RX-7 Turbo and 10th Anniversary models.

The ACT Z65-HDG6 Heavy Duty Race Sprung 6-Pad Clutch Kit is engineered for high-performance applications where increased clamp load and rapid shifting are essential. At the core of this kit is the ACT Heavy Duty pressure plate, featuring an exclusive diaphragm design that undergoes a rigorous four-stage heat-treating process. This ensures maximum clutch life, reduced deflection, and consistent pedal feel even under racing conditions.

The 6-pad spring-centered race disc is designed to handle the thermal demands of larger clutch sizes while providing the durability needed for harsh track environments. The spring-center hub utilizes thicker retainer stampings and wraparound spring windows to effectively damp torsional vibrations and reduce stress concentrations. While engagement is significantly harsher than a street disc, the design allows for faster gear changes and high torque capacity.

• Manufacturer Part Number: Z65-HDG6
• Includes Heavy Duty pressure plate and 6-pad race sprung disc
• Precision cover stampings for improved rigidity and consistency
• Four-stage heat-treated diaphragm for unparalleled durability
• Spring-centered hub for torsional vibration damping
• Recommended for track and high-performance use where fast shifting is required
• Backwards compatible with 1986-1991 Turbo II drivetrains

Fits select 2015-2024 Volkswagen GTI and Golf R models. This ACT VW9-XTSS clutch kit is engineered for drivers requiring increased torque capacity without sacrificing street drivability.

The kit features the ACT Xtreme pressure plate, which utilizes an exclusive diaphragm design to significantly increase clamp load while reducing deflection. Every diaphragm undergoes a specialized four-stage heat-treating process to ensure consistent pedal feel and maximum service life. Precision-stamped covers provide the necessary rigidity for high-performance applications.

The Performance Street Disc included in this kit is constructed from premium organic materials with a high copper content for superior heat transfer. The steel-backed lining increases burst strength, while a reduced marcel design enables faster shift action. The sprung-hub center helps dampen drivetrain vibrations for quieter operation.

• Manufacturer Part Number: VW9-XTSS
• Kit components: Xtreme Pressure Plate and Performance Street Sprung Disc
• High-copper organic friction material for improved thermal management
• Steel-backed linings for high-RPM durability
• Increased clamp load over factory specifications
• Designed for smooth engagement and quiet operation