Worn front control arm bushings have a huge influence on vehicle stability and braking efficiency. Replace these worn bushings with Whiteline control arm bushings for chassis control. Direct factory replacement parts with no adjustability. Whiteline Synthetic Elastomer Bushings: After extensive development and testing of materials that would offer strength and durability, geometry retention and memory without the harshness, WHITELINE has created a progressive, long-chain Synthetic Elastomer that delivers the combined physical advantages of solid bushings, with the extreme flexibility characteristics of rubber.