Designed with a B8 5100 monotube design and patented digressive valving, the Bilstein 5100 Rear Shock is the ultimate solution for handling the demanding conditions of the off-road driving experience. Using advanced gas pressure technology, this shock absorber responds instantly to changing road inputs, providing consistent performance no matter the terrain. Extensive testing and fine tuning by Bilstein ensures that installing the B8 5100 Offroad shock absorbers on your 4WD will greatly improve handling performance in all regards. Features include a monotube design for fade-free performance in all conditions, OEM certified mounting hardware for easy installation, and zinc plating for durability against harsh elements. The durable vulcanized neoprene rubber bushings are also made in either the USA or Germany. Please note that this product is suitable for 0-2" lifts.