PMC Motorsport - Aluminium trailing arm bushing no.3 BMW E36 E46 UniballPMC Motorsport Aluminum Rear Trailing Arm Bushings for BMW E36 E46 Z4 No. 3 No. 2 Uniball Bushing with a spherical bearing (uniball) to be pressed in instead of the original rubber bushing. Significantly improves rear suspension stiffness, making the car much more stable. Designed for Motorsport. Most commonly used in Drifting, Time Attack, Slalom, and Hillclimb racing (GSMP). Mounting position: Rear axle, left or right side, top or bottom position