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 to the 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!

• Rear Differential Case Mount Collar Set, Billet Aluminum with Blue Anodized
• Set of 2