SuperPro 2008 Mitsubishi Lancer Evolution MR Front Lower DuroBall Control Arm Bushing Kit (Std)Control arm bushings form the vital pivot and link between all core suspension components. SuperPro increases the performance and precision over traditional elastomer bushings with the compound DuroBall bushing assembly. Using an isolated spherical bearing encased in polyurethane provides the precision and articulation of a bearing design with the NVH mitigation of SuperPro's bespoke polyurethane compositions Worn bushings allow significant deflection