Bilstein B4 OE Replacement (DampTronic) gas pressure shock absorbers and struts are direct OE replacements for the electronically adjustable dampers found on certain Mercedes-Benz, Porsche, Jaguar, Land Rover, BMW, Volkswagen and Nissan vehicles. Bilstein B4 OE Replacement (DampTronic) shock absorbers and struts are specifically engineered to be the best choice for maintaining the original ride quality of your vehicle, while meeting or exceeding OE standards. Bilstein B4 OE Replacement (DampTronic) is the ideal choice for the driver looking to restore the original performance and handling of their vehicle, with the added benefit of world-famous Bilstein quality. Installation Instructions Warranty Material Safety Data Sheet Material Safety Data Sheet Installation Instructions Warranty Material Safety Data Sheet Warranty