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: 00651860554761 Brand Name: Bilstein Internal Design: Monotube Adjustable Damping: Non-Adjustable Extended Length (MM): 582.7 Finish: Zinc Plated Upper Mount Type: Stem Spring Seat Included: No Body Design: Smooth Body (Non-Coilover) Lower Mount Type: Eye 12mm Extended Length (IN): 22.94 Boot Included: Black Bellows Series: B8 5100 Reservoir: No Body Diameter (ID): 46mm Collapsed Length (IN): 14.02 Collapsed Length (MM): 356.0 Extended Information: Country of Origin: Mexico Emissions : Released Life Cycle Status: Available To Order Packing Information: Quantity of Each: 1.0 Package UOM: EA Dimension: 26.8000 x 2.9500 x 2.9500 inches Weight: 4.4100 lb PDF: USA SDS_Shock_Air Spring_V2_EN Generic_instructions_02