If you're looking to upgrade your ride's clutch setup, the ACT HD/Perf Street Sprung Kit MB4-HDSS is a solid choice. This kit features ACT's heavy-duty pressure plate, which is a favorite among enthusiasts for good reason. The unique diaphragm design cranks up the clamp load while minimizing deflection, so you can expect a clutch that lasts longer and performs better under pressure. They really put this thing through the wringer with a four-stage heat-treating process that ensures it can handle whatever you throw at it.
The pressure plate is built to be rigid and consistent, thanks to precision cover stampings that keep everything in check. Pair that with ACT's Performance Street disc, and you've got a combo that's hard to beat. The disc uses high copper content organic materials, which means better heat transfer and durability. It’s got a steel-backed lining for added burst strength, so you know it’s built to last. Plus, with reduced marcel, you get quicker shifts that feel responsive and smooth. This setup is perfect for both street driving and some spirited racing on the weekends.
Now, let’s talk about the nitty-gritty. You won't find any unnecessary frills here. The pedal effort is light to moderate, giving you a nice balance between comfort and control. The engagement is smooth, and while you might hear a bit of gear rattle, it’s all part of the charm when you know you’re in a performance setup. And with a torque capacity of 200 ft/lbs, you're getting a solid upgrade over the OE setup.
For those who like to get their hands dirty, installation is straightforward. You’ll need to grab a few extra parts like the clutch master cylinder and flywheel bolts, but it comes with grease and an alignment tool to make your life easier. Just check out the install instructions here if you want to get a head start.
Specifications:
This kit fits a range of vehicles, including:
So, if you're ready to take your driving experience to the next level, the ACT HD/Perf Street Sprung Kit is worth considering. It’s tough, reliable, and designed for those who appreciate the finer details in performance.
Other Part Numbers:
ACT #actMB4-HDSS
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
1979-1988 Dodge Colt |
Colt | 1979-1988 |
|
1989-1994, 1996 Eagle Summit |
Summit | 1989-1994, 1996 |
|
1993-1994 Eagle Talon |
Talon | 1993-1994 |
|
1992-1993 Hyundai Elantra |
Elantra | 1992-1993 |
|
1990-1994 Hyundai Excel |
Excel | 1990-1994 |
|
1991-1995 Hyundai Scoupe |
Scoupe | 1991-1995 |
|
1983-1988 Mitsubishi Cordia |
Cordia | 1983-1988 |
|
1990-1994 Mitsubishi Eclipse |
Eclipse | 1990-1994 |
|
1985-2002 Mitsubishi Mirage |
Mirage | 1985-2002 |
|
1989-1993 Mitsubishi Precis |
Precis | 1989-1993 |
|
1983-1988 Mitsubishi Tredia |
Tredia | 1983-1988 |
|
1979-1980 Plymouth Arrow |
Arrow | 1979-1980 |
|
1982 Plymouth Champ |
Champ | 1982 |
|
1990-1994 Plymouth Laser |
Laser | 1990-1994 |

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.