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The ST Suspensions rear anti‑sway bar for BMW E21 tightens rear control and reduces body roll to improve cornering balance. Made from cold‑formed spring steel with a protective coating and high‑quality composite bushings, it minimizes the load difference between inside and outside tires during turns. Multiple adjustment settings where available help dial out under‑ or oversteer, improving traction and steering response. Made in the USA.
ST Rear Anti-Swaybar BMW E21
