If you're looking to take your Ford Mustang's performance to the next level, the ACT FM4-HDG6 HD/Race Sprung 6 Pad Kit is definitely worth considering. This isn’t just any clutch kit; it’s built with serious enthusiasts in mind. The Heavy Duty pressure plate that comes with it is ACT's go-to choice for a reason. They’ve designed it with a unique diaphragm that not only boosts clamp load but also minimizes deflection, which means your clutch is going to last longer and perform better under pressure.
What’s cool about these pressure plates is that they go through a four-stage heat-treating process. This isn’t just a gimmick; it really enhances performance and durability. The precision cover stampings add an extra layer of rigidity, so you can count on consistent performance every time you hit the gas. Now, let’s talk about the 6-pad, spring-centered race disc. It’s engineered to dampen torsional vibrations, which is a fancy way of saying it helps keep everything smooth even when you’re pushing your Mustang to its limits. Sure, engagement is a bit harsher, but that just means you get quicker shifts, and who doesn’t love that?
Another thing to note is the spring retainers. They come with wraparound spring windows and thicker stampings, which means they can handle stress better. This setup really cranks up the strength and reliability, especially in tough driving conditions. You’ll appreciate the way this kit absorbs heat, making it a solid choice for high horsepower street or race use.
Installation is straightforward, and if you need a hand, you can find the instructions right here. Just keep in mind that while it’s designed for light to moderate pedal effort, you’ll feel that aggressive engagement, which can lead to some mild gear rattle. It’s all part of the experience.
Features include:
Specifications:
Fitment:
In short, if you're serious about getting the most out of your Mustang, this clutch kit is a no-brainer. It’s tough, reliable, and designed for those who demand the best from their ride.
Other Part Numbers:
ACT #actFM4-HDG6
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
1979-1998 Ford Mustang |
Mustang | 1979-1998 |
|
1986-1995 Ford Mustang GT |
Mustang GT | 1986-1995 |
|
1993-1995 Ford Mustang SVT Cobra |
Mustang SVT Cobra | 1993-1995 |

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.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: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.