Whiteline Rear Upper Control ArmThe S197 chassis third link set up has suffered from wheel hop and axle tramp with the stock stamped steel arm and the ultra compliant stock bushing that is designed for comfort leaves something desired for performance driving. Whiteline's upper control arm is built with 4130 Chromalloy and features a forged rod end. The dual durometer synthetic elastomer bushing adds increased stability to the rear end without the harshness of the commonly used