SuperPro SPF4112-90K Rear Diff to Subframe Mount Bushings for Toyota 86/BRZ/FR-S

Vehicle Fitment

• 2012-2020 Toyota GT86 (ZN6, RWD)
• 2017-2021 Toyota 86 (ZN6, RWD)
• 2013-2016 Scion FR-S (ZN6, RWD)
• 2012-2021 Subaru BRZ (ZC6, RWD)
• 2022+ Subaru BRZ (ZD8, RWD)

Fitment Notes

• Competition/motorsport-spec (90A durometer) bushing; a softer 80A version (SPF4112-80K) is available for street use.
• Some listings reference Toyota GR86 (ZN8) compatibility, but this wasn't confirmed by two trusted sources for this specific part, so it's excluded here - check with SuperPro directly if cross-shopping for GR86.

Features

• 90A durometer polyurethane built for competition use
• Replaces the rear differential's forward (pinion) mount bushing
• Reduces differential movement under changing throttle load
• Sharpens on- and off-throttle acceleration response
• Minimizes deflection for more consistent power delivery to the wheels
• Outlasts factory rubber, which breaks down quickly under hard use
• Maintains OEM-level noise, vibration, and harshness isolation
• Backed by SuperPro's lifetime warranty

Specifications

• Position: Rear, Differential-to-Subframe (Pinion) Mount
• Durometer: 90A (Competition/Motorsport)
• Material: Polyurethane
• Components: 2 bushings, 1 sleeve

Included Components

• 2x Differential-to-Subframe Mount Bushings
• 1x Sleeve

Product Description

The SuperPro SPF4112-90K replaces the forward differential mount - commonly called the pinion mount - on the Toyota 86/GT86, Subaru BRZ, and Scion FR-S. The factory rubber bushing here wears quickly under hard use, letting the rear differential shift under changing throttle loads. That shows up as sloppier, delayed throttle response, and eventually as noise and vibration as the bushing nears the end of its life.

Built from a firm 90A polyurethane compound specifically for track and competition use, this kit locks the differential more securely to the subframe, sharpening acceleration response and power delivery out of corners. It's a direct-fit swap at the stock location and suits drivers pushing these platforms hard on track, where reducing driveline movement matters most.