If you're serious about getting the most out of your ride, the ACT MaXX/Race Rigid 4 Pad Kit MB1-XXR4 is something you’ll want to check out. This kit is built for enthusiasts who push their cars to the limit. The heart of the kit is the MaXX pressure plate, which features a unique diaphragm design that cranks up the clamp load while keeping deflection to a minimum. What does that mean for you? Better clutch life and performance that doesn’t fade under pressure. Plus, every diaphragm goes through a rigorous four-stage heat treatment process, so you know it can handle the heat when you’re racing or just having fun on the backroads.
The pressure plate is no joke either. With precision cover stampings, it offers the kind of rigidity and consistency that you can rely on. Now, let’s talk about the 4-pad rigid race discs. These bad boys are crafted from high-quality ceramic friction materials, which means they can take a beating. The chrome-moly hub is heat-treated for extra strength and durability, making sure you won’t have to worry about it failing when you need it most.
One of the standout features of this kit is its lightweight, rigid design. It allows for quicker shifts, which is a game-changer on the track. Sure, the engagement is a bit harsher, but that’s the trade-off for faster shifting. This setup is particularly great for those smaller engines that need a little extra love. Just keep in mind that this is recommended for race use only—if you’re looking for a leisurely drive, you might want to think twice.
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So, if you’re ready to take your performance to the next level, this clutch kit is a solid choice. Just remember, it’s built for those who know what they’re doing on the track.
Other Part Numbers:
ACT #actMB1-XXR4
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2003-2004 Chrysler Sebring |
Sebring | 2003-2004 |
|
1991-1996 Dodge Stealth |
Stealth | 1991-1996 |
|
1992-1994, 1996 Eagle Summit |
Summit | 1992-1994, 1996 |
|
1991-1998 Eagle Talon |
Talon | 1991-1998 |
|
1991-1999 Mitsubishi 3000GT |
3000GT | 1991-1999 |
|
1990-2005 Mitsubishi Eclipse |
Eclipse | 1990-2005 |
|
1992-1995 Mitsubishi Expo |
Expo | 1992-1995 |
|
1991-1998 Mitsubishi Galant |
Galant | 1991-1998 |
|
1992-1994 Plymouth Colt |
Colt | 1992-1994 |
|
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.