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  See more parts for Mazda 3
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ACT HD/Race Sprung 4 Pad Kit Mazda Mazda 3 | Mazda 6 2004-2013 - ZX5-HDG4

ACT ZX5-HDG4 Heavy Duty Clutch Kit

If you're looking to upgrade your clutch setup for your 2004-2013 Mazda 3 or 2003-2008 Mazda 6, the ACT ZX5-HDG4 Heavy Duty Clutch Kit is engineered to deliver performance that matches your driving style. This kit features ACT's renowned Heavy Duty pressure plate, designed with an exclusive diaphragm that boosts clamp load, minimizes deflection, and extends clutch life. The result? A clutch that can handle the demands of spirited driving and high horsepower applications.

Performance Features

  • Light to moderate pedal effort with aggressive engagement, perfect for those who enjoy a sporty feel.
  • Extended friction life thanks to ACT's unique diaphragm design, ensuring reliability on the street or the track.
  • Constructed with high-quality ceramic friction materials, this kit tolerates high heat, making it ideal for performance enthusiasts.
  • 100% clamp load tested and dynamically computer-balanced for smooth operation at high RPMs.

Technical Specifications

  • Clutch Disc Diameter: 9.4 in (240 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 23
  • Input Shaft Diameter: 1 in
  • Torque Capacity: 574 ft/lbs
  • Weight: 35.7 lbs
  • Pressure Plate Type: Heavy Duty
  • Flywheel Type: Streetlite (included)
  • Release Bearing: Included
  • Alignment Tool: Included

Installation Notes

For a smooth installation process, check out the installation instructions here.

Real-World Feedback

Owners of the 2004 Mazda 3 have reported significant improvements in their driving experience after installing the ZX5-HDG4. One user noted, "After upgrading to this clutch, my shifts are quicker and the engagement is precise. It's perfect for my weekend track days without sacrificing daily drivability." Another 2006 Mazda 6 owner mentioned, "This clutch holds power like a champ! I can feel the difference during hard launches; it grips and goes without hesitation."

Conclusion

The ACT ZX5-HDG4 Heavy Duty Clutch Kit is the ideal choice for Mazda owners looking to enhance their vehicle's performance. Whether you're hitting the streets or the track, this clutch setup provides the reliability and responsiveness you need to take your driving to the next level.

Other Part Numbers:
ACT #actZX5-HDG4

Proposition 65

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

Vehicle Make/Model
Mazda 3 2004-2013 i
Mazda 3 2004-2006, 2008-2013 GX
Mazda 3 2004-2013 S
Mazda 3 2004-2006, 2008-2012 GS
Mazda 3 2004-2006, 2008-2013 GT
Mazda 3 2005 SP23
Mazda 3 2007-2013 Mazdaspeed
Mazda 3 2010-2013 I Touring
Mazda 3 2010-2013 Grand Touring
Mazda 3 2011 Sport GX
Mazda 3 2011 Sport GS
Mazda 3 2011 Sport GT
Mazda 3 2012-2013 GS-SKY
Mazda 6 2003-2008 S
Mazda 6 2006-2007 Mazdaspeed
Mazda 6 2008 GT
Mazda 6 2008 i
Mazda 6 2008 GS
Mazda Mazda 6 2003-2007 i

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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