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ACT HD/Race Rigid 6 Pad Kit Mazda Miata 2016-2018 - ZM12-HDR6

ACT ZM12-HDR6 Heavy Duty Clutch Kit

Experience the power and performance of the ACT ZM12-HDR6 Heavy Duty Clutch Kit, a top choice for those who demand reliability on the track. This kit features ACT's renowned Heavy Duty pressure plate, specifically designed to enhance clamp load, minimize deflection, and extend clutch life. The exclusive diaphragm design undergoes a meticulous four-stage heat-treating process, ensuring that you get unparalleled performance every time you hit the road.

One of the standout features of the ZM12-HDR6 is its precision cover stampings, which provide superior rigidity and consistency. Coupled with the 6-pad rigid race disc made from high-quality ceramic friction materials, this clutch kit is engineered for serious performance enthusiasts. The chrome-moly hub is heat-treated for added strength and durability, making it a reliable choice for high-stress applications.

While the engagement may be harsher due to the rigid design, the payoff is faster shifting and smoother service. This kit is particularly recommended for larger clutch sizes, allowing for better heat absorption during intense driving conditions.

Customer Feedback

Many users have praised the ZM12-HDR6 for its impressive performance on the track. One customer noted, "The engagement is aggressive, but the shifts are lightning-fast. I can feel the difference in my lap times!" Another user mentioned, "It took a bit to get used to the harsher engagement, but once I did, I loved how responsive my car felt."

Features:

  • Light to moderate pedal effort with aggressive engagement
  • Moderate friction life, enhanced by ACT's exclusive diaphragm design
  • Carefully engineered and precisely balanced for maximum performance
  • Recommended for race use only
  • 100% clamp load tested for high RPM reliability

Specifications:

  • Clutch Master Cylinder Included: No
  • Grease Included: Yes
  • Grade Type: Performance
  • Pilot Bushing Included: No
  • Pressure Plate Type: Heavy Duty
  • Release Bearing Included: Yes
  • Clutch Disc Diameter: 8.8 in (224 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 22
  • Input Shaft Diameter: 0.9375 in
  • Alignment Tool Included: Yes
  • Disc Type: Solid
  • Pressure Plate Bolts Included: Yes
  • Clutch Slave Cylinder Included: No
  • Flywheel Bolts Included: No
  • Pilot Bearing Included: Yes
  • Product Weight: 16.4 lbs
  • Torque Capacity: 399 ft/lbs

Notes:

  • 225mm upgrade requires the ACT 600870 flywheel (not included in kit) or a modified OE flywheel. The 600870 flywheel is compatible with both OE and ACT clutch kits. Flywheel sold separately.

Fitment:

Compatible with Mazda Miata models from 2016 to 2018.

Installation Instructions:

For detailed installation instructions, CLICK HERE.

Other Part Numbers:
ACT #actZM12-HDR6

Proposition 65

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

Vehicle
2016-2018
 Mazda Miata

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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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