BILSTEIN 5100 Series Ride Height Adjustable Shock Absorbers are designed for front coilover style pickup and SUV suspensions. With the use of multiple snap ring grooves to position the spring seat at different heights the vehicles ride height can be changed anywhere between 0-2.5” depending on application. Match your ride height adjustable shock with BILSTEIN 5100 Series Rear Shock Absorbers. The 5100 Series Rear Shock Absorber is designed specifically to help your truck, Jeep or SUV reach its pinnacle in ride performance.