BMR 10-15 5th Gen Camaro Rear Upper Control Arm Bushing Kit (Delrin) - Black HammertoneReduce spindle movement and dynamic rear alignment changes with a Delrin upper control arm bushing from BMR's suspension. The factory upper A arm has a bearing at the front of the A arm and a large rubber bushing at the rear, which allows for a large amount of unwanted movement. This allows for excess spindle movement, which absorbs power when transferring it to the tires. This counter rotation leads to uncontrollable wheelhop and inconsistent braking