Bilstein B4 OE Replacement gas pressure 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. These dampers are 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. Twintube Shock Absorber Coming Soon BMW 328i GT xDrive 2016-2014; 330i GT xDrive 2019-2017; 335i GT xDrive 2016-2014; 340i GT xDrive 2019-2017; 428i 2016-2014; 430i 2019-2017; 435i 2016-2014; 440i 2019-2017