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The H&R Sport Spring kit for 2005–2011 BMW 645Ci/650i Convertible E64 applications lowers ride height to reduce fender gap and center of gravity for improved handling. The progressive spring design limits body roll while keeping comfortable ride quality and can help marginally streamline the vehicle for better fuel economy. Built from 54SiCr6 spring steel with shot peening and block-setting, these lightweight German-made springs are H&R’s top-selling suspension upgrade.
H&R 05-11 BMW 645Ci Convertible/650i Convertible E64 Sport Spring
