From the Bilstein catalog
46mm Monotube Shock Absorber
Part Number: 24-196499 Front
Series: 5100 Series (Ride Height Adjustable)
*Collapsed Length (IN): 17.58
*Extended Length (IN): 22.48
*Collapsed Length (MM): 446.5
*Extended Length (MM): 571.1
Finish: Zinc Plated
Reservoir: No
Body Design: 46mm ID Snap Ring Grooved Body (Coilover)
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)