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Although similar in design to the earlier 2004-2009 rear bar, Mazda moved the bar mounting brackets further outboard on the 2010+ Mazda 3 chassis which required a slight reconfiguration of the rear bar for this later application. The diameter of the Racing Beat Mazda 3 rear sway bar for this application is 1.0625" (27mm), as compared to the stock .79" (20mm) rear bar and is 3.24 times stiffer than the stock bar. Each Mazda 3 rear sway bar is supplied with replacement urethane bushings, bar clamps, Prothane grease and installation instructions.