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ACT HD/Perf Street Sprung Kit Ford Mustang 2011-2017 - FM13-HDSS

If you're looking to upgrade your Mustang's clutch setup, the ACT FM13-HDSS kit is a solid choice. This isn't just any clutch kit; it's built for those who want something that can handle the heat—literally. The heart of this kit is ACT's Heavy Duty pressure plate, which features a unique diaphragm design. This design boosts clamp load, cuts down on deflection, and helps your clutch last longer. Plus, every diaphragm goes through a four-stage heat-treating process, so you know it’s tough enough for whatever you throw at it.

The Performance Street disc is where things get interesting. Made from high-quality organic materials with a good amount of copper, it’s designed for better heat transfer and durability. The steel-backed lining means it can take a beating without falling apart. And with reduced marcel, you’ll notice quicker shifts that feel crisp and responsive, perfect for both daily driving and spirited weekend runs.

Install Instructions:

Features:

  • Light to moderate pedal effort—easy on the legs, but still gives you that positive engagement.
  • Longer friction life thanks to ACT's smart diaphragm design.
  • Carefully engineered and balanced, using premium organic materials that stand up to heat and resist fade.
  • Great for both street and race applications, so you don't have to compromise.
  • Each unit is 100% clamp load tested and balanced for smooth performance at high RPMs.

Specifications:

  • Clutch Master Cylinder Included: No
  • Grease Included: Yes
  • Grade Type: Performance
  • Pilot Bushing Included: No
  • Pressure Plate Type: Heavy Duty
  • Clutch Disc Diameter: 11 in (280 mm)
  • Disc Material: Organic
  • Input Spline Quantity: 23
  • Input Shaft Diameter: 1 in
  • Alignment Tool Included: Yes
  • Disc Type: Sprung Solid
  • Pressure Plate Bolts Included: No
  • Clutch Slave Cylinder Included: No
  • Flywheel Bolts Included: No
  • Pilot Bearing Included: Yes
  • Product Weight: 29.9 lbs
  • Torque Capacity: 605 ft/lbs
  • Torque Capacity Over OE: 0.44

Notes:

  • Make sure to use the conversion dowels that come with the pressure plate if you're installing this on the OE flywheel.

Fitment:

  • Ford Mustang 2011-2022
  • Ford Mustang GT 2015-2022
  • Ford Mustang 2016-2017
  • Ford Mustang Boss 302 2012-2013
  • Ford Mustang GT 2011-2017

This kit is made for those who want a reliable clutch that can handle both the daily grind and the occasional track day. If that sounds like you, then the ACT FM13-HDSS is worth considering.

Other Part Numbers:
ACT #actFM13-HDSS

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2016-2017
 Ford Mustang
2012-2013
 Ford Mustang Boss 302
2011-2017
 Ford Mustang GT

ACT Banner

ACT ? Advanced Clutch Technology | Clutch Kits & Flywheels Built to Handle Real Power

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.
  • Hold More Power Engineered to handle turbo, supercharger, and high-compression builds
  • Faster Engagement Stronger pressure plates for better bite off the line
  • Better Pedal Feel Balanced response without going full race-car stiff
  • Reduced Rotational Mass Lightweight flywheels improve rev-matching and response
  • No Guesswork Direct-fit applications, no fabbing, no hassle
ACT Clutch Kits and Flywheels Fit the Cars Enthusiasts Build

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:
  • Performance Clutch Kits From HD street kits to twin-disc race systems
  • Clutch Discs 6-puck, full-face, rigid or sprung to match your style
  • Pressure Plates Heavy-duty options that increase clamp load without sacrificing control
  • Chromoly Lightweight Flywheels Quicker revs, smoother shifts, and less drivetrain stress
  • Complete Hardware Kits Everything you need for a proper install
Performance Tested. Driver Approved.

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.

ACT warrants all products to be free of defects in materials and workmanship for normal use and service for a period of one (1) year from retail purchase. Written notice must be immediately given to ACT within the warranty period. We require a copy of the purchase receipt showing the unit was purchased from an Authorized Dealer or Advanced Clutch Technology directly to verify the product is under warranty. Products purchased used do not carry a warranty. This warranty is to the original purchaser and is non-transferable. All non-warranty items are subject to a $50 inspection bench test fee.

ACT reserves the right to examine any part returned for warranty claim to determine, to ACT's satisfaction, whether the material or workmanship of the part does not conform to this limited warranty. ACT's obligation under this warranty shall be limited to repairing, replacing, or crediting, at its option, any part which is deemed covered by ACT. No labor, lift or storage charges will be reimbursed for any reason. Damage to ACT's parts resulting from misuse, improper use, or abuse shall void this limited warranty. Failure to follow ACT's installation instructions and the vehicle manufacturers installation procedures and specifications shall void this limited warranty.

ACT undertakes no responsibility for the quality of the goods except as otherwise provided in this contract. ACT assumes no responsibility that the goods will be fit for any particular purpose for which you may be buying these goods, except as otherwise provided in the contract. ACT shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty.

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