Bilstein 5100 Series Ride Height Adjustable Shock Absorbers are designed for front coilover style pickup suspensions. The monotube shocks feature a 46mm digressive piston with self-adjusting deflective disc valving. Multiple snap-ring grooves in the shock body allow for different spring seat positions, providing 0"-2.5" of front end lift, depending on application. Provides increased wheel travel and improved handling! (zinc-plated steel body, Triple-C-Technology coating)