The Bilstein B8 5100 Series (24-185783) is a high-performance 46mm monotube shock absorber specifically engineered for lifted trucks and SUVs. Designed for the rear axle, it features a velocity-sensitive digressive piston that reacts to changing road conditions for superior stability both on and off-road. The zinc-plated finish ensures durability against harsh elements. This product is a single shock absorber; for a full axle replacement, order two units. Components included: 1x Shock Absorber (24-185783), Bushings, and Zinc-plated hardware.