Bilstein B6 Heavy Duty monotube gas pressure shocks and struts are the ideal choice for most vehicles, including full-size sedans, SUVs and trucks. These shocks provide improved handling and stability, without sacrificing ride comfort. They offer super damping ability that makes them ideal for the driver who demands superior performance, while maintaining an exceptional street ride. *The product benefits at a glance:* * Monotube gas pressure construction * Improved safety and sportiness * Added traction and enhanced stability * Increased durability and performance while maintaining ride comfort * Road-tested and fine-tuned by BILSTEIN for each vehicle specific application PartNumber : bil24-171311 Description : B6 Performance - Shock Absorber Series : B6 (HD) Boot Included : No Internal Design : Monotube Lower Mount Type : Stem Upper Mount Type : Stem Finish : Yellow Paint Title : Bilstein Shock Absorbers Series : B6 Performance California Proposition 65 : WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov Position : Rear 2013-2015 BMW X1 sDrive28i L4.1997cc Suspension::Shocks and Struts 2013-2015 BMW X1 xDrive28i L4.1997cc Suspension::Shocks and Struts 2013-2015 BMW X1 xDrive35i L6.2979cc Suspension::Shocks and Struts