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  See more parts for Mazda Miata
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ACT HD/Race Sprung 4 Pad Kit Mazda Miata 2006-2015 - ZM5-HDG4

Upgrade Your Mazda Miata with the ACT ZM5-HDG4 Clutch Kit

If you're a proud owner of a 2006-2015 Mazda Miata, you know the importance of a reliable clutch system that can handle spirited driving and track days. The Advanced Clutch Technology (ACT) ZM5-HDG4 HD/Race Sprung 4 Pad Kit is designed specifically for your Miata, offering a robust solution for both daily driving and high-performance applications.

Why Choose the ACT ZM5-HDG4?

The ZM5-HDG4 features ACT's renowned Heavy Duty pressure plate, engineered with an exclusive diaphragm design that enhances clamp load while minimizing deflection. This means more consistent power transfer and improved clutch longevity, even under extreme conditions. Each diaphragm undergoes a rigorous four-stage heat-treating process, ensuring durability and performance you can trust.

Key Features

  • Light to moderate pedal effort for everyday comfort.
  • Aggressive engagement for quick shifts, perfect for spirited driving.
  • Moderate friction life, thanks to ACT's innovative diaphragm design.
  • Precision-engineered with select ceramic friction materials for high heat tolerance.
  • 100% clamp load tested and dynamically balanced for reliability at high RPMs.

Technical Specifications

  • Clutch Disc Diameter: 8.8 in (224 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 22
  • Input Shaft Diameter: 0.9375 in
  • Pressure Plate Type: Heavy Duty
  • Torque Capacity: 359 ft/lbs
  • Weight: 13.4 lbs
  • Release Bearing Included: Yes
  • Pilot Bearing Included: Yes
  • Alignment Tool Included: Yes
  • Pressure Plate Bolts Included: Yes (M8-1.25 x 20mm)

Installation and Compatibility

This clutch kit is tailored for 5-speed applications only. For detailed installation instructions, CLICK HERE.

Real-World Feedback

One 2012 Mazda Miata owner shared their experience: "I installed the ACT ZM5-HDG4 clutch kit last month, and the difference is night and day! The engagement is crisp, and I can feel the power transfer so much better than the stock setup. Perfect for my weekend track days!"

Conclusion

For Miata enthusiasts looking to enhance their driving experience, the ACT ZM5-HDG4 clutch kit is a smart investment. With its blend of performance, durability, and ease of installation, you'll be ready to hit the road or track with confidence.

Other Part Numbers:
ACT #actZM5-HDG4

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2006-2015
 Mazda Miata

ACT Banner

ACT ? Advanced Clutch Technology | Clutch Kits & Flywheels Built to Handle Real Power

If you've added boost, tuned for more power, or simply want better throttle control, then your stock clutch won't cut it. That?s where ACT (Advanced Clutch Technology) comes in delivering high-performance clutch kits and flywheels designed for real drivers who push their builds on the street, strip, or track.

ACT?s lineup includes everything from daily driver friendly HD kits to hardcore twin disc setups for serious horsepower. Whether you?re launching hard in a WRX, drifting in a 370Z, or canyon carving in an M3, ACT gives you the torque capacity and engagement you need without sacrificing drivability.

Why ACT? Because Power Without Control Is Useless.
  • Hold More Power Engineered to handle turbo, supercharger, and high-compression builds
  • Faster Engagement Stronger pressure plates for better bite off the line
  • Better Pedal Feel Balanced response without going full race-car stiff
  • Reduced Rotational Mass Lightweight flywheels improve rev-matching and response
  • No Guesswork Direct-fit applications, no fabbing, no hassle
ACT Clutch Kits and Flywheels Fit the Cars Enthusiasts Build

ACT doesn?t just make universal performance parts ? they build complete, vehicle-specific clutch solutions for enthusiast favorites. Whether you daily a Civic Type R, track a Subaru STI, drift a 240SX, or drag a Mustang GT, ACT offers the right clutch to match your build goals.

Top supported platforms include the Nissan 350Z/370Z, Toyota Supra A90, Chevy Camaro SS/ZL1, Mitsubishi Evo, Ford Focus RS/ST, and BMW M3/M4 ? each with clutch options tuned to your driving needs.

What ACT Offers:
  • Performance Clutch Kits From HD street kits to twin-disc race systems
  • Clutch Discs 6-puck, full-face, rigid or sprung to match your style
  • Pressure Plates Heavy-duty options that increase clamp load without sacrificing control
  • Chromoly Lightweight Flywheels Quicker revs, smoother shifts, and less drivetrain stress
  • Complete Hardware Kits Everything you need for a proper install
Performance Tested. Driver Approved.

ACT isn?t hype ? it?s proven. Their clutches are SFI-certified, track-tested, and used by racers in drag, time attack, autocross, drift, and rally. But what really matters? They hold power, last longer, and feel right even after hundreds of hard launches or hours of canyon carving.

Whether you're upgrading for more power or replacing a tired OEM clutch, ACT gives you the bite, strength, and feel to drive harder with confidence. No compromises, no excuses just parts that work when it matters.

ACT warrants all products to be free of defects in materials and workmanship for normal use and service for a period of one (1) year from retail purchase. Written notice must be immediately given to ACT within the warranty period. We require a copy of the purchase receipt showing the unit was purchased from an Authorized Dealer or Advanced Clutch Technology directly to verify the product is under warranty. Products purchased used do not carry a warranty. This warranty is to the original purchaser and is non-transferable. All non-warranty items are subject to a $50 inspection bench test fee.

ACT reserves the right to examine any part returned for warranty claim to determine, to ACT's satisfaction, whether the material or workmanship of the part does not conform to this limited warranty. ACT's obligation under this warranty shall be limited to repairing, replacing, or crediting, at its option, any part which is deemed covered by ACT. No labor, lift or storage charges will be reimbursed for any reason. Damage to ACT's parts resulting from misuse, improper use, or abuse shall void this limited warranty. Failure to follow ACT's installation instructions and the vehicle manufacturers installation procedures and specifications shall void this limited warranty.

ACT undertakes no responsibility for the quality of the goods except as otherwise provided in this contract. ACT assumes no responsibility that the goods will be fit for any particular purpose for which you may be buying these goods, except as otherwise provided in the contract. ACT shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty.

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