Cusco Rear Differential Mount Collar 2008-2014 WRX / 2008-2021 STI

As motorsport experts, during product development for GRB Impreza, CUSCO has found that differential mount collars would give you massive improvement and decided to add them on production line up. With this part, you can feel response more directly compared to reinforcement bushings. You will NOT need to take off and swap the bush, just bolt this on!