Racing Beat's Mazda 3s Rear Sway Bar for the 2004-2006 Sedan or 5-Door (2.3L) - Racing Beat-designed sway bars reduce chassis roll during cornering and increases your car's sensitivity to steering inputs, thereby improving maximum cornering power. Substantial engineering effort, select steel alloys, and precise heat-treating processes are combined to produce top performance components. All Racing Beat sway bars are finished with a distinctive, red powder coating that provides a smooth, glossy protective layer. You can be assured of many years of superior handling performance with these proven bars! br> The diameter of the Racing Beat rear sway bar is 1.06" (27mm), as compared to the stock .79" (20mm) rear bar and is 3.24 times stiffer than the stock bar. An additional feature of the front 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, bar clamps, Prothane grease and installation instructions.