• ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Scion FR-S / Subaru BRZ / Toyota 86 (13-21) (SB8-HDG4)
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ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Scion FR-S / Subaru BRZ / Toyota 86 (13-21) (SB8-HDG4)

ACT Heavy Duty Race Sprung 4 Pad Clutch Kit | Scion FR-S / Subaru BRZ / Toyota 86 (13-21) (SB8-HDG4)

SB8-HDG4

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The ACT Heavy Duty Race Sprung 4 Pad Clutch Kit for the Scion FR-S, Subaru BRZ, and Toyota 86 (2013-2021) is a high-performance clutch assembly designed for demanding driving conditions. This kit features ACT's most popular Heavy Duty pressure plate, which utilizes an exclusive diaphragm design to increase clamp load, reduce deflection, and extend clutch life. The pressure plate undergoes a four-stage heat-treating process to ensure durability and consistent performance under high-stress conditions. The clutch disc incorporates a four-pad spring-centered race design with a spring-centered hub, providing smooth engagement and reliable power transfer. Built with precision and quality materials, this clutch kit offers enhanced holding capacity and longevity for spirited driving and track use.

Designed for 2013-2021 Subaru BRZ, Scion FR-S, and Toyota 86 models, this clutch kit is a direct replacement for stock components, suitable for street, track, and performance applications. It is engineered to handle increased power levels and aggressive driving styles, making it ideal for enthusiasts seeking improved clutch performance. The kit includes a heavy-duty pressure plate, a four-pad race disc, and all necessary hardware for installation. Compatible with stock or upgraded flywheels, this clutch assembly provides a reliable upgrade for high-performance builds and daily drivers alike.

Overview

2013-2021 BRZ/FR-S/86 ACT 4-Pad Sprung HD Prolite Racing Clutch Kit

SB8-HDG4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4-pad spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.

Features

  • Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle
  • Moderate friction life, extended by ACT's exclusive diaphragm design
  • Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance
  • Recommended for high horsepower street or race use
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

Please Note:

  • Must use ACT Flywheel (Included in kit)
  • Recommended for race use only

 

Applications

  • 2013-2016 Scion FR-S
  • *Conversion kit - Includes ACT Prolite flywheel.
  • 2013-2021 Subaru BRZ
  • *Conversion kit - Includes ACT Prolite flywheel.

Installation Instructions

What's in the box?

  • 1 - 4224218-1 - 4 Pad Sprung Race Disc
  • 1 - 600700 - XACT Flywheel Prolite
  • 1 - AT90 - Alignment Tool
  • 1 - PB1004 - Pilot Bearing
  • 1 - RB004 - Release Bearing
  • 1 - SB017 - P/PL Heavy Duty

Specifications

  • Description: HD/Race Sprung 4 Pad
  • Torque Capacity (ft/lbs.): 345
  • Torque Capacity Over OE: 1.17
  • Flywheel Tooth Count: 124
  • Disc Type: Race Disc
  • Spline Count: 24
  • Spline Size (in.): 1
  • Disc Diameter (in.): 8.8
  • Disc Diameter (mm.): 224
  • Pressure Plate Type: Heavy Duty
  • Product Weight (lbs.): 24.8
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