Bilstein B8 5100 Series shock absorbers are designed as a direct fit solution for lifted trucks and SUVs. These shock absorbers feature a monotube design which provides consistent fade-free performance. B8 5100 shock absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All B8 5100 shock absorbers are tuned for each specific application to assure optimal performance is achieved. B8 5100 shock absorbers offer a significant improvement in ride quality, handling, and comfort. Product features: 46mm monotube design, zinc plated finish, 0-1 inch lift capacity. Included in this package: 1 x Rear Shock Absorber (Part Number: 24-321150).