SuperPro SPF5513-6K Trailing Arm - Differential & Chassis End Kit (6pcs.)SuperPro SPF5513 6K Trailing Arm Differential & Chassis End Kit (6pcs.) Control arm bushings form the vital pivot and link between all core suspension components. Worn bushings allow significant deflection and movement leading to a vehicle that is slower to respond to driver inputs, can feel sloppy or disconnected, and irregular and excessive tire wear that can diminish every facet of the way your vehicle drives. The wear is accelerated and the impact