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ACT HD/Race Rigid 4 Pad Kit Ford | Mazda | Kia 1988-2003 - Z61-HDR4

If you're looking to step up your clutch game, the ACT Z61-HDR4 HD/Race Rigid 4 Pad Kit is where it’s at. This isn’t just some off-the-shelf kit; it features ACT's go-to Heavy Duty pressure plate, which is designed to handle the heat of serious driving. The clever diaphragm design cranks up the clamp load, minimizes deflection, and helps your clutch last longer. Plus, every diaphragm goes through a four-stage heat-treating process, so you know it’s built to perform.

Now, let’s talk about the 4-pad rigid race discs. These bad boys are made from high-quality ceramic friction materials that can take a beating. The chrome-moly hub is heat-treated, giving you strength and durability without the extra weight. What does that mean for you? Quicker shifts and a smoother ride, though be warned—the engagement is definitely on the harsher side. If you’re pushing a smaller engine, this setup is perfect for those smaller disc sizes.

Install Instructions:

Features:

  • Light to moderate pedal effort with an aggressive engagement that might rattle your gears a bit.
  • Moderate friction life, but thanks to ACT's unique diaphragm design, you can expect a bit more longevity, though be mindful that the rigid setup might wear on the splines.
  • Each component is carefully engineered and balanced, using select ceramic materials to withstand high heat and deliver peak performance.
  • Keep in mind, this is recommended for race use only—if you’re serious about your driving, this is the way to go.
  • Everything is 100% clamp load tested and dynamically balanced to ensure smooth operation at high RPMs.

Specifications:

  • Clutch Master Cylinder Included: No
  • Grease Included: Yes
  • Grade Type: Performance
  • Flywheel Included: No
  • 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: No
  • Clutch Slave Cylinder Included: No
  • Flywheel Bolts Included: No
  • Pilot Bearing Included: Yes
  • Product Weight: 11.5 lbs
  • Torque Capacity: 365 ft/lbs
  • Torque Capacity Over OE: 0.98

Fits the following:

  • Ford Probe 1989-1992
  • Kia Sephia 1996-2001
  • Kia Spectra 2002-2003
  • Kia Sportage 1995-2002
  • Mazda 323 1988-1989
  • Mazda 626 1988-1992
  • Mazda MX-3 1994-1995
  • Mazda MX-6 1988-1992

Other Part Numbers:
ACT #actZ61-HDR4

Proposition 65

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

Vehicle
1989-1992
 Ford Probe
1996-2001
 Kia Sephia
2002-2003
 Kia Spectra
1995-2002
 Kia Sportage
1988-1989
 Mazda 323
1988-1992
 Mazda 626
1994-1995
 Mazda MX-3
1988-1992
 Mazda MX-6

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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