H&R 08-13 BMW 128i/135i E82 27mm Non Adj. Sway Bar - FrontH&R'sport Sway Bars are designed for drivers'who desire improved handling without lowering or affecting ride quality. H&R'sport Sway Bars increase your suspension's roll stiffness or its resistance to roll in turns while maintaining ride comfort and dramatically increasing cornering control, lateral stability, and grip. A unique feature of H&R'sport Sway Bars are the smooth, machined like forged ends that, for specific vehicles, allow for