The panhard bar's function is to prevent lateral movement. When modifying the ride height of the S197 chassis, it is necessary to use an adjustable panhard rod to correct the axle center which pusht he wheels out to one side. Whiteline's Adjustable Panhard Bar is made out of 4130 Chromalloy for strength and features synthetic elastomer bushings with non-bonded bushing design which allows the crush tubes to free float and eliminates bushing wind and snap back to increase handling predictability.