AKG Motorsport Rear Subframe And Diff Bushing Set, Poly 95A – E30Product Description This BMW E30 Polyurethane (95A) Rear Subframe and Differential Mount Bushing Set significantly reduces subframe and differential movement for improved power transfer through the rear end to the wheels. Rear subframe bushings are also the first step in maintaining proper rear end geometry and alignment. The stock rubber subframe and differential bushings deflect as torque moves through the drivetrain, allowing the entire assembly to