The diameter of the rear tubular bar is .75" (19mm) x .125" wall thickness, as compared to the stock .632" (16mm) x .097" wall thickness rear bar. An additional feature of the rear bar is a pair of OEM style "stoppers" to prevent the bar from sliding sideways in the bar bushings during heavy cornering effort. Each bar is supplied with replacement urethane bushings, Prothane grease and installation instructions. (The original OEM bar clamps are retained for use with this bar.)