If you're looking to upgrade your Jeep's clutch, the ACT HD-O/Perf Street Sprung Kit JP4-HDSS is worth a closer look. This kit is built with the kind of heavy-duty pressure plate that you can trust to handle the demands of both spirited street driving and off-road adventures. I’ve had my fair share of rough terrain and stop-and-go traffic, and this setup has never let me down.
One of the standout features of this kit is ACT's unique diaphragm design. It cranks up the clamp load while keeping deflection to a minimum, which means you get a clutch that lasts longer and feels great under your foot. The four-stage heat-treating process that each diaphragm goes through is no joke—it's all about performance and durability. You can really feel the difference when you're out there pushing your Jeep to its limits.
The pressure plate cover is precision-stamped for added rigidity, which helps maintain consistent performance even when the heat is on. And speaking of heat, the pressure plate castings are machined to absorb it, so you don’t have to worry about fading during those long drives. The street disc itself is packed with high-quality materials, featuring a robust center section and premium organic friction materials that offer exceptional wear resistance and heat capacity. Plus, the steel backing gives it extra burst strength, making it a reliable choice for both street and off-road use.
Installation? ACT makes it straightforward. You can find the installation instructions here. It’s a good idea to have everything ready before you dive in, but trust me, once you get it in, you’ll appreciate the light to moderate pedal effort and the smooth engagement. It’s designed to keep things driveable, with just a hint of gear rattle—perfect for those who like a bit of character in their ride.
Here’s the lowdown on the specs: it features an 11-inch clutch disc diameter (280 mm) with a solid sprung design, and it can handle up to 479 ft/lbs of torque. That’s a solid upgrade over stock, and you’ll definitely notice the difference when you’re on the gas. Just keep in mind that it doesn’t come with the clutch master cylinder or pressure plate bolts, but it does include grease, an alignment tool, and a pilot bearing. Weighing in at about 21.9 lbs, this kit is a solid investment for anyone serious about their Jeep.
In short, if you’re looking to enhance your Jeep Wrangler (2007-2020), this kit is a no-brainer. It’s tough, reliable, and designed for those who want to push their Jeep to the max without worrying about clutch issues. Get ready to enjoy a smoother ride and better performance on and off the road!
Other Part Numbers:
ACT #actJP4-HDSS
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2007-2020 Jeep Wrangler |
Wrangler | 2007-2020 |

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.