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  See more parts for Mazda Miata
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ACT XT/Race Rigid 4 Pad Kit Mazda Miata 1990-1993 - ZM1-XTR4

ACT ZM1-XTR4 Clutch Kit

Introducing the ACT ZM1-XTR4 Clutch Kit, designed for the serious driver who demands top-notch performance on the track. This kit features an advanced Xtreme pressure plate that’s built to handle the most intense driving conditions. The unique diaphragm design not only increases clamp load but also minimizes deflection, ensuring your clutch lasts longer under pressure.

Each diaphragm undergoes a meticulous four-stage heat-treating process, which enhances durability and performance. With precision cover stampings, the pressure plates provide the rigidity and consistency you need for high-speed gear changes.

Customer Feedback

“The ZM1-XTR4 has transformed my racing experience. The shifts are quicker, and I feel more connected to my car. Definitely recommend it for anyone serious about performance!” - John D.

“I was impressed by the quality of the materials. The ceramic friction discs hold up well under high heat, and the installation was straightforward. A solid choice for race enthusiasts.” - Sarah T.

Features & Benefits

  • Moderate to heavy pedal effort for aggressive engagement and increased gear rattle.
  • Moderate friction life, extended by ACT's exclusive diaphragm design, though the rigid design may increase spline wear.
  • Carefully engineered and precisely assembled using select ceramic friction materials for high heat tolerance and maximum performance.
  • Recommended for race use only, ensuring that you get the best performance when it matters most.
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability.

Specifications

  • Clutch Master Cylinder Included: No
  • Grease Included: Yes
  • Grade Type: Performance
  • Pilot Bushing Included: No
  • Pressure Plate Type: Xtreme
  • Release Bearing Included: Yes
  • Clutch Disc Diameter: 7.9 in (200 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 22
  • Input Shaft Diameter: 0.9375 in
  • Alignment Tool Included: Yes
  • Disc Type: Solid (Sprung)
  • Pressure Plate Bolts Included: No
  • Clutch Slave Cylinder Included: No
  • Flywheel Bolts Included: No
  • Pilot Bearing Included: Yes
  • Product Weight: 10.4 lbs
  • Torque Capacity: 350 ft/lbs (1.56 times over OE)

Notes

  • Must be used with factory flywheel.

Fitment

Compatible with Mazda Miata models from 1990 to 1993.

Installation Instructions

For detailed installation instructions, CLICK HERE.

Other Part Numbers:
ACT #actZM1-XTR4

Proposition 65

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

Vehicle Make/Model
Mazda Miata 1990-1993 Base
Mazda Miata 1991 SE
Mazda Miata 1993 LE

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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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