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: 00651860599120 Brand Name: Bilstein Internal Design: Monotube Adjustable Damping: Non-Adjustable Upper Mount Type: Eye 16mm Extended Length (MM): 530.0 Collapsed Length (MM): 344.0 Collapsed Length (IN): 13.54 Boot Included: Black Straight Body Design: Smooth Body (Non-Coilover) Spring Seat Included: No Extended Length (IN): 20.87 Finish: Zinc Plated Reservoir: No Series: B8 5100 Lower Mount Type: Eye 14.1mm Body Diameter (ID): 46mm Extended Information: Country of Origin: United States 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: 4.7000 lb PDF: USA SDS_Shock_Air Spring_V2_EN Generic_instructions_02