The Bilstein B4 OE Replacement twin-tube rear strut for 2006–2010 BMW 525xi, 528xi and 530xi restores original ride characteristics while meeting or exceeding OE standards. Bilstein positions these B4 dampers as an OE-style replacement to recover factory ride quality, handling and safety with precise construction and high power reserves for reliable everyday driving.
Bilstein B4 OE Replacement 06-10 BMW 525xi / 528xi / 530xi Rear Twintube Strut Assembly