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ACT HD/Race Rigid 6 Pad Kit Mazda Miata 1990-1993 - ZM1-HDR6

If you’re looking to take your Mazda Miata to the next level, the Advanced Clutch HD/Race Rigid 6 Pad Kit (ZM1-HDR6) might just be what you need. This isn’t just any clutch kit; it’s built for those who want serious performance on the track. The heart of this kit is ACT's Heavy Duty pressure plate, which is designed to give you a solid clamp load while minimizing deflection. You can really feel the difference when you’re pushing your car hard. The diaphragm goes through a four-stage heat-treating process, which means it’s tough and built to last.

Now, let’s talk about the 6-pad rigid race discs. These bad boys are crafted from high-quality ceramic friction materials, ensuring they can handle the heat and keep performing when the pressure’s on. The chrome-moly hub is heat-treated too, giving it the strength and durability you want when you’re out there racing. The lightweight, rigid design means you’ll experience quicker shifts, making that transition between gears feel seamless. Just a heads up though, with the 6-pad design, the engagement can be a bit harsher, but that’s the trade-off for faster shifting—something every racer appreciates.

Installation is straightforward, but if you need a hand, you can check out the instructions here.

Here’s a quick rundown of what you can expect with this kit:

  • Light to moderate pedal effort, but be ready for aggressive engagement and some increased gear rattle.
  • The friction life is moderate, but thanks to ACT’s exclusive diaphragm design, it should hold up well. Just keep in mind that the rigid design might lead to more spline wear over time.
  • Every component is carefully engineered and dynamically balanced, so you can trust it for smooth high RPM reliability.
  • This setup is really meant for race use—so if you’re hitting the track, you’re in good hands.

As for the specs, here are the key details:

  • Clutch Disc Diameter: 7.9 in (200 mm)
  • Input Spline Quantity: 22
  • Input Shaft Diameter: 0.9375 in
  • Torque Capacity: 250 ft/lbs
  • Weight: 10.8 lbs
  • Pressure Plate Type: Heavy Duty
  • Disc Material: Ceramic

Just a quick note: this kit must be used with the factory flywheel. So, if you’re ready to up your game with your 1990-1993 Mazda Miata, this ACT HD/Race Rigid 6 Pad Kit is a solid choice. You’ll feel the difference on the track, and your car will thank you for it.

Other Part Numbers:
ACT #actZM1-HDR6

Proposition 65

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

Vehicle
1990-1993
 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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