ISR Performance Rear Differential Mount Support Brace

2013–2021 Subaru BRZ / 2013–2016 Scion FR-S / 2017–2021 Toyota GT86

Part #: IS-RDMS-FRS

Overview

The ISR Performance Rear Differential Mount Support Brace is a high-quality upgrade designed to enhance the stability and support of your vehicle's rear differential. Built specifically for the Subaru BRZ, Scion FR-S, and Toyota GT86 models within the specified years, this brace is an essential component for enthusiasts seeking improved handling and drivetrain durability. Whether you're a spirited driver, participating in track days, or simply want a more responsive driving experience, this support brace helps you get the most out of your vehicle.

Constructed from durable high-strength steel, the ISR Differential Brace reinforces the factory differential mounting points, which are often susceptible to flex during aggressive driving or hard launches. By minimizing differential movement, this upgrade ensures that power is transferred more efficiently to the wheels, resulting in better traction, improved response, and reduced stress on other drivetrain components. The result is a more confident and controlled driving experience, especially during high-performance maneuvers.

Key Features

The ISR Performance Differential Mount Support Brace offers a range of features designed to improve your vehicle's handling and durability:

• Manufactured from high-strength steel for maximum durability and rigidity, ensuring long-lasting performance under demanding driving conditions.
• Precisely engineered to reinforce the factory differential mounting points, reducing flex and unwanted movement during aggressive driving or spirited cornering.
• Designed with a bolt-on installation process that requires no cutting or welding, making it a straightforward upgrade for DIY enthusiasts and professional installers alike.
• Improves driveline response by maintaining proper differential alignment, which helps support increased power and torque transfer.
• Reduces stress on other drivetrain components, potentially extending the lifespan of related parts such as axles and driveshafts.
• Finished with a durable coating to resist corrosion and maintain appearance over time.

Construction & Design

The ISR Differential Brace is crafted from high-strength steel, ensuring a robust and reliable support structure. Its design features precise CAD development and TIG welding for a seamless fit and finish. The brace mounts directly to the factory mounting points, utilizing existing hardware for a clean and secure installation. Its one-piece construction provides a solid reinforcement that effectively minimizes differential movement, especially during high-load scenarios. The compact and lightweight design ensures that it does not interfere with other components or affect ground clearance, making it an ideal upgrade for both street and track use.

Installation & Fitment

The ISR Performance Rear Differential Mount Support Brace is designed for a straightforward bolt-on installation. No cutting, drilling, or welding is required, and all necessary hardware is included. The process typically involves removing the factory differential mount bolts and replacing them with the support brace, ensuring a secure fit. Basic mechanical skills and standard hand tools are sufficient for installation, which can usually be completed within an hour. Properly installed, this brace provides a significant upgrade in drivetrain stability without any compromise to daily drivability.

• Easy bolt-on installation with no modifications required
• Reinforces factory mounting points for improved stability
• Compatible with Subaru BRZ (2013–2021), Scion FR-S (2013–2016), and Toyota GT86 (2017–2021)

What's Included

• High-strength steel differential mount support brace
• All necessary mounting hardware and bolts
• Installation instructions

Ideal For

• Enthusiasts seeking improved handling and drivetrain stability
• Track day participants and spirited drivers
• Owners looking to reduce stress on drivetrain components during aggressive driving
• DIYers and professional installers looking for a reliable reinforcement upgrade