If you're looking to kick your Mustang's performance up a notch, the ACT FM4-HDSS HD/Perf Street Sprung Kit is where it’s at. This kit combines the tried-and-true Heavy Duty pressure plate with a street disc that’s become a favorite among enthusiasts. The pressure plate is designed with a unique diaphragm that cranks up the clamp load, which means it holds on tight without compromising on longevity. Plus, each diaphragm goes through a four-stage heat treatment process, so you know it’s built to handle some serious heat.

The Performance Street disc is no slouch either. It’s made with premium organic materials that have a high copper content—this helps with heat transfer, so you can push your ride without worrying about fade. The steel-backed lining adds an extra layer of durability, and with reduced marcel, you get quicker shifts that feel smooth and responsive. It all comes together for a setup that’s reliable whether you’re hitting the streets or the track.

Installation Tips:

• Need help with the install? Check out the instructions here.

What to Expect:

• Pedal effort is light to moderate, so it’s comfortable for daily driving.
• You’ll notice smooth engagement and just a bit of gear rattle—nothing too crazy.
• Thanks to that clever diaphragm design, you’ll get a longer friction life.
• Perfect for both street and race applications.
• Each unit is 100% clamp load tested and dynamically balanced for reliability at high RPMs.

Specs That Matter:

• Clutch Disc Diameter: 10.5 inches (266 mm)
• Input Spline Quantity: 26
• Input Shaft Diameter: 1.125 inches
• Torque Capacity: 485 ft/lbs—definitely more than enough for spirited driving.
• Product Weight: 22.2 lbs—light enough to keep things spry.
• Grease and alignment tool included, but no clutch master cylinder or release bearing.

Fits These Models:

• Ford Mustang 1979-1998
• Ford Mustang GT 1986-1995
• Ford Mustang SVT Cobra 1993-1995

This kit is a solid choice if you want to enhance your Mustang's performance without going overboard. It strikes a good balance between daily drivability and track readiness, so you can enjoy your ride just the way it was meant to be.