• ACT Heavy Duty Race Rigid 4 Pad Clutch Kit w/ Prolite Flywheel | Subaru BRZ / Scion FR-S / Toyota 86 (13-21) (SB8-HDR4)
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ACT HD Rigid 4-Pad Clutch Kit | Subaru BRZ/FR-S/86 (13-21) (SB8-HDR4)

ACT HD Rigid 4-Pad Clutch Kit | Subaru BRZ/FR-S/86 (13-21) (SB8-HDR4)

SB8-HDR4

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$935.00 USD
$1,154.00 USD $935.00 USD
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The ACT HD Rigid 4-Pad Clutch Kit for Subaru BRZ, Scion FR-S, and Toyota 86 (2013-2021) is a high-performance clutch upgrade designed for enthusiasts seeking increased durability and improved power transfer. This kit features ACT's most popular Heavy Duty pressure plate, which utilizes an exclusive diaphragm design to enhance clamp load, minimize deflection, and extend clutch life. The pressure plate undergoes a four-stage heat-treating process to ensure maximum performance and reliability under demanding conditions. The rigid race discs are constructed with high-quality materials to deliver consistent engagement and excellent heat resistance, making this clutch kit ideal for spirited driving and track use. The combination of precision cover stampings and robust components provides a stable, responsive clutch experience with increased holding capacity.

Designed specifically for 2013-2021 Subaru BRZ, Scion FR-S, and Toyota 86 models, this clutch kit is a direct replacement for stock components, offering a bolt-on installation for ease of upgrade. It is suitable for street, track, and light competition applications where enhanced clamping force and durability are required. The kit includes the four-pad rigid race discs and the Heavy Duty pressure plate, ensuring a comprehensive upgrade for your vehicle's clutch system. Compatible with stock flywheels and designed to handle increased power levels, this clutch kit is perfect for drivers seeking reliable performance and longevity under high-stress conditions. Proper installation ensures optimal engagement and maximum clutch life for spirited driving and racing scenarios.

Overview

2013-2017 BRZ/FR-S/86 ACT 4-Pad Rigid HD Prolite Racing Clutch Kit

SB8-HDR4 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 rigid race discs are made with high quality, ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc, engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.

Features

  • Light to moderate pedal effort, aggressive engagement, increased gear rattle
  • Moderate friction life, extended by ACT's exclusive diaphragm design, rigid design may increase spline wear
  • Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

Specifications

  • Part Number: SB8-HDR4
  • Description: HD/Race Rigid 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.): 23.4

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 - 4224018 - 4 Pad Rigid 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
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