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The Bilstein B4 OE replacement shock for 2014–2019 BMW 640i xDrive (rear) is a twin-tube absorber designed to restore factory ride comfort and handling in xDrive models. B4 dampers meet or exceed OE standards to return original steering feel and stability while offering Bilstein quality. Twin-tube construction provides dependable damping, high power reserves and a direct-fit replacement for reliable OE-grade performance.
Bilstein 14-19 BMW 640i xDrive B4 OE Replacement Shock Absorber - Rear
