The FEBI-BILSTEIN 24-244237 Rear B4 OE Replacement Shock Absorber is engineered to restore the original ride quality and handling characteristics of Mercedes-Benz GLA250 and INFINITI QX30 vehicles. Designed as a direct replacement for the factory-installed shock absorber, this component ensures seamless integration and optimal performance. Constructed with a monotube gas pressurized system, it delivers consistent damping force under various load conditions, enhancing vehicle stability and comfort. The shock absorber features a black paint finish for durability and corrosion resistance. Its specifications include a collapsed length of 17.13 inches (435 mm) and an extended length of 25.79 inches (655 mm), with a lower mount type of Eye 10.2 mm and an upper mount type of Stem. This product is backed by a limited lifetime warranty, reflecting FEBI-BILSTEIN's commitment to quality and customer satisfaction.