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. 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.