ACT HD/Race Sprung 4 Pad Clutch Kit

2013–2016 Scion FR-S / 2013–2020 Subaru BRZ / 2017–2020 Toyota 86

SB8-HDG4

Overview:

The ACT HD/Race Sprung 4 Pad Clutch Kit is engineered for enthusiasts seeking a high-performance clutch solution for their Scion FR-S, Subaru BRZ, or Toyota 86. This kit features ACT’s renowned Heavy Duty pressure plate combined with a 4-pad sprung race disc, delivering aggressive engagement and enhanced durability. Designed to handle increased horsepower and torque, it offers a balance between street drivability and race-ready performance, making it an ideal upgrade for spirited driving and track use.

Built to withstand demanding conditions, this clutch kit improves clamp load and reduces deflection, extending clutch life while maintaining consistent operation. Its precise engineering ensures reliable engagement and smooth shifting, even under high stress.

Key Features:

The ACT HD/Race Sprung 4 Pad Clutch Kit incorporates advanced technology and robust components to maximize performance and reliability:

• Heavy Duty diaphragm pressure plate with exclusive four-stage heat treatment for superior strength and longevity
• Precision cover stampings enhance rigidity and ensure consistent clamp load
• 4-pad spring-centered race disc designed to dampen torsional vibrations for quieter operation and reduced failure risk
• Wraparound spring windows and thicker spring retainers provide enhanced spring support and durability
• Light to moderate pedal effort with aggressive engagement for faster shifting
• Use of select ceramic friction materials for high heat tolerance and extended friction life
• 100% clamp load tested and dynamically computer balanced for smooth operation at high RPM
• Optimized for smaller disc sizes and engines, ideal for the FR-S, BRZ, and 86 platforms
• Backed by ACT’s industry-leading one-year warranty

Construction & Design:

The clutch kit’s Heavy Duty pressure plate features an exclusive diaphragm design that increases clamp load while minimizing deflection, resulting in improved clutch life and consistent performance. Each diaphragm undergoes a rigorous four-stage heat-treating process to enhance durability under extreme conditions.

The 4-pad sprung race disc is engineered with spring-centered technology to absorb torsional vibrations, reducing noise and preventing premature failure. The wraparound spring windows and reinforced spring retainers provide additional support, reducing stress concentrations and improving overall strength. The friction material is carefully selected ceramic, offering excellent heat resistance and reliable engagement during aggressive driving.

Performance & Sound

This clutch kit delivers a more aggressive engagement compared to stock, providing quicker shifts and improved throttle response. While engagement is harsher, it remains manageable with light to moderate pedal effort. The spring-centered disc design helps reduce gear rattle commonly experienced in performance clutches, offering a balance between race-level performance and street comfort.

Installation & Fitment:

The ACT HD/Race Sprung 4 Pad Clutch Kit is a direct fit for the following vehicles without requiring modifications:

• Scion FR-S (2013–2016)
• Subaru BRZ (2013–2020)
• Toyota 86 (2017–2020)

Installation should be performed by a qualified technician familiar with performance clutch systems. Proper break-in procedures are recommended to maximize clutch life and performance.

What's Included:

• ACT Heavy Duty diaphragm pressure plate
• 4-pad sprung race clutch disc with ceramic friction material
• Spring retainers with wraparound spring windows
• Installation hardware as required

Ideal For:

This clutch kit is perfect for high horsepower street vehicles and race applications where improved clamp load, durability, and faster shifting are desired. It suits drivers who demand aggressive engagement and enhanced clutch life without sacrificing drivability on the street. Enthusiasts upgrading their Scion FR-S, Subaru BRZ, or Toyota 86 for track days, autocross, or spirited driving will benefit from this robust and reliable clutch solution.

ACT (Advanced Clutch Technology) engineers performance clutches and flywheels built for consistent engagement, higher torque capacity, and durability in street and race use. The brand emphasizes quality and reliability and is widely used by enthusiasts who need driveline components that can handle repeated hard launches, shifts, and track abuse.