PSM FC Trailing Arm Rear Upper Bushings PairListing is for: 1x Pair of bushes CNC gold anodized aluminum bushing replaces the rubber upper bushing in the trailing arm that is no longer needed to flex after toe steer eliminator is installed. Mounts at top of rear trailing arms where aluminum knuckles attach. **Install with the lip on the rear side because the knuckle sliding ring takes up the same space as a lip on the front side.