SuperPro Rear Spring Shackle Rear -Upper & Lower Bushing Kit | Universal (SPF2098K)Rear Spring Shackle Rear Upper & Lower Bushing Kit by SuperPro These bushings are often overlooked when upgrading the suspension of a 4WD. Leaf spring bushings stabilise the movement of the rear axle, inferior bushes in this area will cause the solid rear axle to move and impart rear end passive steer to the vehicle. Features SuperPro Rear Spring Shackle Rear Upper & Lower Bushing Kit Benefits It also causes the vehicle to "wander" all over the road