If you’re looking for a performance lowering shock absorber or strut, the BILSTEIN B8 Sport Series is up to the task. Designed to enhance your car’s lowered suspension, BILSTEIN’s monotube gas pressure technology features delivers a sport ride with remarkable comfort. *The product benefits at a glance:* * Monotube gas pressure construction * High-performance shock absorbers and struts designed specifically for lowering springs and production sport vehicle * Sport-tuned with a high level of comfort * Precision handling and optimized vehicle control * Road-tested and fine-tuned by BILSTEIN PartNumber : bil24-104937 Description : B8 Performance Plus - Shock Absorber Series : B8 (SP) Boot Included : No Internal Design : Monotube Lower Mount Type : Eye 12mm Upper Mount Type : Stem Finish : Yellow Paint Title : Bilstein Shock Absorbers Series : B8 Performance Plus California Proposition 65 : WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov Position : Rear 2003-2005 BMW Z4 2.5i L6.2494cc Suspension::Shocks and Struts 2003-2005 BMW Z4 3.0i L6.2979cc Suspension::Shocks and Struts 2006-2008 BMW Z4 Coupe 3.0si L6.2996cc Suspension::Shocks and Struts 2006-2008 BMW Z4 Roadster 3.0i L6.2996cc Suspension::Shocks and Struts 2006-2008 BMW Z4 Roadster 3.0si L6.2996cc Suspension::Shocks and Struts