The Bilstein B8 5100 series (24-317887) is a high-performance 46mm monotube shock absorber designed specifically for lifted light trucks and SUVs. Features include: 1) Velocity sensitive digressive piston reacting to changing road conditions. 2) Adjustable spring seat allowing for multiple lift height levels (0-2.75 inches depending on application). 3) Zinc-plated finish for resistance against harsh elements. Kit components: 1x Shock Absorber (24-317887), 1x Zinc Plated Snap Ring, 1x Billet Aluminum Spring Seat.