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H&R rear sway bar for 2003–2008 BMW Z4 (E85) is a 21mm adjustable anti‑roll bar that boosts lateral stability and cornering grip while preserving ride quality. The larger diameter and forged ends improve roll stiffness and response, with multiple adjustment positions where applicable. H&R kits commonly include Poly/Teflon bushings — a urethane/Teflon composite made in Germany to prevent squeaks and eliminate lubrication.
H&R 03-08 BMW Z4 E85 21mm Adj. 3 Hole Sway Bar - Rear
