Cusco Rear Differential Mount Collar 2008-2014 WRX / 2008-2021 STI FEATURED_2017-2022Crosstrek Modifications Required: Slight air box

Modifications Required: Slight air box modification for 2017-2020 BRZ/GT86 manual with OEM intake

while the larger internal diameter boosts airflow for improved throttle response and power delivery

Perfect for enthusiasts who demand better rear-end control on both street and track

The sleek black finish complements your Subaru’s cabin

Cusco Rear Differential Mount Collar 2008-2014 WRX / 2008-2021 STI FEATURED_2017-2022Crosstrek Modifications Required: Slight air boxCusco Rear Differential Mount Collar 2008 2014 WRX 2008 2021 STI Drivetrain Stability Mount Collar Overview The Cusco Rear Differential Mount Collar is a precision engineered upgrade designed specifically for Subaru WRX and WRX STI models from 2008 to 2021. This high quality component enhances rear differential response, providing a more direct and connected driving experience. Ideal for spirited driving, track days, or enthusiasts looking to improve