The Bilstein B12 (Pro-Kit) 11-12 BMW 528i Base L4/L6 2.0/3.0L Front & Rear Suspension Kit is a complete suspension upgrade for the 2011-2012 BMW 528i. This kit includes Bilstein B12 Pro-Kit performance dampers and Eibach Pro-Kit performance springs. The dampers feature monotube gas pressure construction, which offers superior damping ability and consistent performance. The Eibach Pro-Kit springs are designed to lower the vehicle's center of gravity, reduce body roll, and improve handling and overall performance. This kit is ideal for those looking to improve the performance and handling of their BMW 528i.