SuperPro 2013 Scion FR-S Base Rear Differential-to-Subframe Mount Bushing Set (Motorsport)

This kit replaces the forward differential mount bushings - known as the pinion mount bushings. The OEM units are soft rubber and break down fairly quickly with that wear accelerated the harder they are used. The worn bushings allow more movement of the rear differential under changing loads. This can initially be felt behind the wheel as slower and sloppier responsiveness, and as the OEM bushings near the end of their life or fair it can be accompanied by noise, vibration and secondary movements under changing loads - especially as you get on the gas and come back off of it. SuperPro's differential mount upgrades maintain OEM levels of noise, vibrations and harshness isolation in the cabin so your car maintains the new factory levels of comfort. At the same time performance is significantly improved with the differential more accurately located under a wider range of conditions and the service life dramatically improved with our materials maintaining peak performance throughout their life rather than slowly softening and degrading like natural rubber.

Upgrade the rear differential mounting system in your 2013-2015 Scion FR-S or Subaru BRZ with the SuperPro SPF4112-90K Motorsport Rear Differential-to-Subframe Mount Bushing Set. Designed to replace the forward differential, or pinion, mount bushings, this kit helps reduce unwanted differential movement under acceleration, deceleration, and changing driveline loads. It is an effective solution for restoring sharper vehicle response when worn factory bushings cause sluggish handling, drivetrain movement, or load-related noise and vibration.
Factory differential bushings use soft natural rubber that can soften, crack, and deteriorate over time, especially under aggressive driving conditions. SuperPro’s engineered bushing material maintains its shape and performance longer, keeping the differential more accurately located across a wider range of driving conditions. The result is improved driveline control, more consistent power delivery, and enhanced responsiveness without sacrificing the comfort expected from a street-driven vehicle.
The SuperPro SPF4112-90K kit is engineered to retain near-OEM levels of noise, vibration, and harshness isolation in the cabin while providing a substantial durability and performance improvement over aging factory components. This Motorsport-grade upgrade is suitable for drivers seeking more precise rear-end behavior, improved load transition control, and dependable long-term performance. It is designed as a direct replacement for the specified factory differential mount bushings and is intended for use with compatible original equipment mounting components.
Compatible applications include the 2013, 2014, and 2015 Scion FR-S, along with the 2013, 2014, and 2015 Subaru BRZ. Verify vehicle application before installation. Professional installation is recommended to ensure correct bushing orientation, proper hardware torque, and safe operation.

Features:

• Brand: SuperPro

• Part Number: SPF4112-90K

• Application: Rear differential-to-subframe mount bushing set

• Product Type: Motorsport differential mount upgrade

• Function: Reduces differential movement under changing driveline loads

• Performance: Improves rear-end responsiveness and driveline control

• Durability: Engineered material resists softening and degradation

• Comfort: Maintains near-OEM noise, vibration, and harshness isolation

• Fitment: 2013-2015 Scion FR-S and Subaru BRZ

Fitment:
Scion FR-S Base 2013
Scion FR-S Base 2014
Scion FR-S Base 2015
Scion FR-S Base 2016
Subaru BRZ Limited 2013
Subaru BRZ Limited 2014
Subaru BRZ Limited 2015
Subaru BRZ Limited 2016
Subaru BRZ Limited 2017
Subaru BRZ Limited 2018
Subaru BRZ Limited 2019
Subaru BRZ Limited 2020
Subaru BRZ Limited 2022
Subaru BRZ Limited 2023
Subaru BRZ Limited 2024
Subaru BRZ Limited 2025
Subaru BRZ Premium 2013
Subaru BRZ Premium 2014
Subaru BRZ Premium 2015
Subaru BRZ Premium 2016
Subaru BRZ Premium 2017
Subaru BRZ Premium 2018
Subaru BRZ Premium 2019
Subaru BRZ Premium 2022
Subaru BRZ Premium 2023
Subaru BRZ Premium 2024
Subaru BRZ Premium 2025
Subaru BRZ Series.Blue 2015
Subaru BRZ Series.Gray 2019
Subaru BRZ Series.HyperBlue 2016
Subaru BRZ Series.Yellow 2017
Subaru BRZ TS 2018
Subaru BRZ TS 2020
Toyota 86 Base 2017
Toyota 86 Base 2018
Toyota 86 Base 2019
Toyota 86 Base 2020
Toyota 86 GT 2018
Toyota 86 GT 2019
Toyota 86 Hakone Edition 2020
Toyota 86 Special Edition 2017
Toyota 86 TRD Special Edition 2019
Toyota GR86 Base 2022
Toyota GR86 Base 2023
Toyota GR86 Premium 2022
Toyota GR86 Premium 2023