SuperPro Rear Trailing Arm Bushings | Multiple Subaru Fitments (SPF3097K)Rear Trailing Arm Bushings Front Position by SuperPro The trailing arm of your vehicle is only as strong as the bushings that hold it in place and the original bushings are made of rubber and flex and bend with suspension movement. Those rubber bushings will eventually wear out and change shape with the constant flexing of everyday driving, much less time on the trail or the track. If you need something stronger and more durable than OE rubber then