Quick Overview Bilstein B8 5100 shock absorbers are designed as a direct fit solution for lifted trucks and SUV’s. 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. Attributes: GTIN: 00651860453798 Brand Name: Bilstein Body Diameter (ID): 46mm Spring Seat Included: No Lower Mount Type: Bar Pin Upper Mount Type: Stem Adjustable Damping: Non-Adjustable Reservoir: No Series: B8 5100 Body Design: Smooth Body (Non-Coilover) Finish: Zinc Plated Extended Length (MM): 561.0 Extended Length (IN): 22.09 Internal Design: Monotube Collapsed Length (MM): 345.0 Collapsed Length (IN): 13.58 Boot Included: Black Bellows Extended Information: Country of Origin: Mexico Life Cycle Status: Available To Order Emissions : Released Packing Information: Quantity of Each: 1.0 Package UOM: EA Dimension: 26.8000 x 2.9500 x 2.9500 inches Weight: 4.9000 lb PDF: USA SDS_Shock_Air Spring_V2_EN E4-WM5-Y217A00