• ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Mazda MX-5 Miata (06-15) (ZM4-HDG4)
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ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Mazda MX-5 Miata (06-15) (ZM4-HDG4)

ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Mazda MX-5 Miata (06-15) (ZM4-HDG4)

ZM4-HDG4

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$603.00 USD
$744.00 USD $603.00 USD
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The ACT Heavy Duty Race Sprung 4 Pad Clutch Kit for the Mazda MX-5 Miata (2006-2015) is a high-performance clutch upgrade designed for demanding driving conditions. It features ACT's most popular Heavy Duty pressure plate, which utilizes an exclusive diaphragm design to increase clamp load, reduce deflection, and extend clutch lifespan. The pressure plate is heat-treated through a four-stage process to ensure durability and consistent performance under stress. The kit includes a 4-pad spring-centered race disc that effectively dampens torsional vibrations, providing smooth engagement and enhanced control. Built with precision cover stampings, this clutch assembly offers increased rigidity and reliability, making it suitable for spirited driving and track use.

Designed for 2006-2015 Mazda MX-5 Miata models, this clutch kit is a direct replacement for stock components, offering improved clamping force and durability. It is ideal for enthusiasts seeking a robust upgrade for street, track, or autocross applications. The kit is a bolt-on installation, requiring no modifications for proper fitment. It includes all necessary components for a complete clutch replacement, ensuring optimal performance and longevity. Suitable for vehicles driven aggressively or in demanding environments, this clutch kit enhances power transfer and driving confidence.

Overview

ACT HD/Race Sprung 4 Pad Kit

ZM4-HDG4 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 spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.

Features

  • Torque Capacity (ft/lbs.): 355
  • Torque Capacity Over OE: 0.87
  • Pilot Bushing Included: Yes
  • Pressure Plate Type: Heavy Duty
  • Release Bearing Included: Yes
  • Clutch Disc Diameter (in.): 8.8
  • Clutch Disc Diameter (mm): 224
  • Disc Material: Ceramic
  • Input Spline Quantity: 23
  • Input Shaft Diameter (in.): 1
  • Alignment Tool Included: Yes
  • Product Weight (lbs.): 13.4

Applications

  • 2006-2015 Mazda MX-5 Miata

What's In The Box?

  • Clutch Friction Disc (4224208)
  • Clutch Alignment Tool (AT03)
  • Clutch Pressure Plate (MZ018)
  • Clutch Pilot Bearing (PB1030)
  • Clutch Release Bearing (RB110)

References

Warranty

  • Manufacturer 1 Year Warranty
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