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The Bilstein B4 OE replacement shock for 2017–2021 BMW 530i (rear) is a twin-tube absorber designed to restore factory ride comfort and handling. B4 dampers are engineered to meet or exceed OE standards, returning original balance, steering feel and safety. Twin-tube construction provides dependable damping and high power reserves, making these direct-fit replacements a practical choice for restoring OE ride characteristics.
Bilstein 17-21 BMW 530i B4 OE Replacement Shock Absorber - Rear
