• ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Mazda MX-5 Miata (06-15) (ZM5-HDG4)
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ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Mazda MX-5 Miata (06-15) (ZM5-HDG4)

ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Mazda MX-5 Miata (06-15) (ZM5-HDG4)

ZM5-HDG4

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$605.00 USD
$747.00 USD $605.00 USD
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The ACT Heavy Duty Race Sprung 4 Pad Clutch Kit for Mazda MX-5 Miata (2006-2015) is a high-performance clutch upgrade designed to handle increased power and demanding driving conditions. This kit features ACT's most popular Heavy Duty pressure plate, which utilizes an exclusive diaphragm design to enhance clamp load, minimize deflection, and extend clutch lifespan. The pressure plate undergoes a rigorous four-stage heat-treating process, ensuring durability and consistent performance under extreme conditions. The inclusion of a 4-pad spring-centered race disc provides effective torsional vibration damping, contributing to smoother engagement and improved drivability. Built with precision cover stampings, this clutch assembly offers rigidity and reliability for spirited driving and track use.

Designed specifically for 2006-2015 Mazda MX-5 Miata models, this clutch kit is a direct replacement for stock components, providing a significant upgrade in clamping force and durability. It is suitable for street, track, and performance applications where increased torque capacity is required. Installation involves bolt-on replacement of the existing clutch components, making it compatible with the stock flywheel and transmission setup. The kit includes the heavy-duty pressure plate and race disc, with no additional components required. This clutch kit is ideal for enthusiasts seeking a reliable, high-performance upgrade that enhances power transfer and longevity during aggressive driving or racing scenarios.

Overview

ACT HD/Race Sprung 4 Pad Kit

ZM5-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

  • Product Weight (lbs.): 13.4
  • 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: 22
  • Input Shaft Diameter (in.): 0.9375
  • Alignment Tool Included: Yes

Applications

  • 2006-2015 Mazda MX-5 Miata

What's In The Box?

  • Clutch Friction Disc (4224205)
  • Clutch Alignment Tool (AT05)
  • Clutch Pressure Plate (MZ018)
  • Clutch Pilot Bearing (PB1030)
  • Clutch Release Bearing (RB110)

References

Warranty

  • Manufacturer 1 Year Warranty
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