Upgrade your BMW 1 Series suspension system with this high-quality rear shock absorber from DREXLER. This twin-tube gas pressure shock is designed to provide a smooth and comfortable ride for your vehicle. It is made of durable steel material and comes with a 3-year warranty period. This shock absorber is compatible with BMW 1 Series models from 2004 to 2013, including E81, E82, E87, and E88. It can be installed on the rear left or right side of the vehicle. With features like gas charged shock, sealed design, and 100% accuracy of fit, this shock absorber is easy to replace and provides reliable performance.