The Bilstein B8 5100 Series 33-318950 is a high-performance gas-pressure shock absorber specifically designed for the rear of Ford F-150 trucks. Ideal for lifted pickups, these shock absorbers feature a monotube design which provides consistent, fade-free performance. Utilizing a unique, velocity-sensitive, digressive piston, the B8 5100 reacts to changing road conditions instantly. This part is a single shock absorber; for a full rear axle replacement, please order two units. Components included: 1x Shock Absorber (Art: 33-318950), 1x Bushing & Washer Kit, 1x Installation Instruction Manual.