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  See more parts for Scion FRS
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ACT HD/Race Sprung 4 Pad Kit Scion FRS | Subaru BRZ | Toyota GT-86 2012-2021 - SB8-HDG4

ACT SB8-HDG4 Heavy Duty 4 Pad Clutch Kit

If you're looking to boost the performance of your 2013-2016 Scion FRS, 2013-2020 Subaru BRZ, or 2012-2021 Toyota GT-86, the ACT SB8-HDG4 Heavy Duty 4 Pad Clutch Kit is a solid choice. This kit is engineered for those who demand more from their clutch system, delivering the performance needed for both spirited street driving and track days.

Why Choose the ACT SB8-HDG4?

The SB8-HDG4 kit features ACT's renowned Heavy Duty pressure plate, designed with an exclusive diaphragm that significantly increases clamp load while minimizing deflection. This means you get a clutch that lasts longer and performs better under pressure. Each diaphragm undergoes a rigorous four-stage heat-treating process, ensuring it can handle the heat of high-performance driving.

One of the standout features of this kit is the 4-pad spring-centered race disc. This design not only dampens torsional vibrations for a quieter ride but also ensures reliability in harsh conditions?perfect for those who push their cars to the limit. The engagement may feel harsher, but that?s a trade-off for faster, more precise shifting that performance enthusiasts crave.

Installation and Compatibility

Installing the ACT SB8-HDG4 is straightforward, especially for those who enjoy working on their cars. For detailed installation instructions, you can CLICK HERE.

Features

  • Light to moderate pedal effort with aggressive engagement.
  • Moderate friction life, extended by ACT's exclusive diaphragm design.
  • Engineered with select ceramic friction materials for high heat tolerance.
  • Recommended for high horsepower street or race applications.
  • 100% clamp load tested and dynamically balanced for reliability at high RPMs.

Technical Specifications

  • Clutch Master Cylinder Included: No
  • Grease Included: Yes
  • Grade Type: Performance
  • Flywheel Included: Yes (ACT Prolite)
  • Pressure Plate Type: Heavy Duty
  • Release Bearing Included: Yes
  • Clutch Disc Diameter: 8.8 in (224 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 24
  • Input Shaft Diameter: 1 in
  • Alignment Tool Included: Yes
  • Disc Type: Sprung Solid
  • Pressure Plate Bolts Included: Yes
  • Flywheel Bolts Included: Yes (M10-1.0 x 25mm)
  • Product Weight: 24.8 lbs
  • Torque Capacity: 349 ft/lbs (1.07 times over OE)

Notes

  • This is a conversion kit that includes the ACT Prolite flywheel. It's essential to use the ACT flywheel included in the kit.

Customer Feedback

Owners of the Subaru BRZ have praised the SB8-HDG4 for its ability to handle increased torque without slipping. One owner mentioned, ?After installing this clutch, my shifts feel incredibly precise, and I?ve noticed a significant improvement in my lap times at the track.?

Upgrade your clutch system with the ACT SB8-HDG4 kit and experience the difference in performance and reliability that comes with a premium product designed for serious drivers.

Other Part Numbers:
ACT #actSB8-HDG4

Proposition 65

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

Vehicle
2013-2016
 Scion FRS
2013-2020
 Subaru BRZ
2012-2021
 Toyota GT-86

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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