Superpro Rear Differential-to-Subframe Mount Bushing Set

2013–2024 Subaru BRZ / 2017–2020 Toyota 86 / 2022–2023 Toyota GR86

SPF4112-80K

Overview:

The Superpro Rear Differential-to-Subframe Mount Bushing Set is a direct replacement kit designed specifically for the forward differential mount bushings, commonly referred to as pinion mount bushings, on the Subaru BRZ, Toyota 86, and Toyota GR86 models within the specified year ranges. These bushings play a critical role in securing the rear differential to the subframe, controlling its movement under various driving conditions.

OEM bushings are made from soft rubber that deteriorates relatively quickly, especially under aggressive driving or spirited use. As these bushings wear, the rear differential experiences increased movement, which negatively impacts vehicle responsiveness and handling precision. This kit is engineered to restore and enhance the differential’s stability, improving throttle response and overall driving dynamics while maintaining factory-level comfort and NVH (noise, vibration, and harshness) isolation.

Key Features:

Superpro’s rear differential mount bushings offer a range of benefits that make them an essential upgrade for enthusiasts and daily drivers alike:

• Direct replacement for OEM forward differential mount bushings (pinion mount bushings)
• Constructed from advanced polyurethane materials for superior durability and longevity
• Significantly reduces unwanted differential movement under load for improved handling precision
• Maintains OEM levels of noise, vibration, and harshness isolation for cabin comfort
• Resists degradation and softening common with natural rubber bushings
• Enhances throttle response by stabilizing the differential during acceleration and deceleration
• Precision-engineered to fit Subaru BRZ (2013–2024), Toyota 86 (2017–2020), and Toyota GR86 (2022–2023) models
• Improves overall drivetrain feel without introducing harshness or noise
• Extends service life compared to OEM rubber bushings, reducing maintenance frequency

Construction & Design:

Superpro utilizes high-quality polyurethane compounds that outperform traditional rubber in both strength and resilience. This material choice ensures the bushings maintain their stiffness and shape over time, resisting the effects of heat, oil, and mechanical stress. The design focuses on preserving the original mounting geometry to ensure proper differential alignment and load distribution.

Each bushing is precision molded to exact OEM specifications, guaranteeing a perfect fit and easy installation. The polyurethane formulation is engineered to provide a balanced level of compliance, allowing for effective vibration damping while minimizing unwanted differential movement.

Installation & Fitment:

Installation of the Superpro Rear Differential-to-Subframe Mount Bushing Set is straightforward and requires no modifications to the vehicle. It is a direct bolt-in replacement for the factory pinion mount bushings on the rear differential. Professional installation is recommended to ensure proper torque settings and alignment, but experienced enthusiasts with basic mechanical skills can complete the swap using standard hand tools.

This kit is specifically designed to fit the following vehicles:

• Subaru BRZ model years 2013 through 2024
• Toyota 86 model years 2017 through 2020
• Toyota GR86 model years 2022 through 2023

What's Included:

• Set of polyurethane rear differential-to-subframe mount bushings (pinion mount bushings)
• Installation instructions

Ideal For:

This bushing set is ideal for Subaru BRZ, Toyota 86, and Toyota GR86 owners who seek to restore or improve their vehicle’s rear differential stability. It is perfect for enthusiasts who drive their cars aggressively on the street or track, as well as daily drivers looking to maintain factory-level comfort while enhancing drivetrain precision. The upgrade is especially beneficial for vehicles experiencing symptoms of worn differential bushings such as sluggish throttle response, excessive drivetrain movement, or increased noise and vibration.