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: 00651860453583 Brand Name: Bilstein Boot Included: Black Bellows Internal Design: Monotube Collapsed Length (IN): 12.17 Body Design: Smooth Body (Non-Coilover) Adjustable Damping: Non-Adjustable Collapsed Length (MM): 309.0 Lower Mount Type: Eye 16mm Upper Mount Type: Stem Finish: Zinc Plated Reservoir: No Series: B8 5100 Body Diameter (ID): 46mm Spring Seat Included: No Extended Length (IN): 18.98 Extended Length (MM): 482.2 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: 4.4500 lb PDF: USA SDS_Shock_Air Spring_V2_EN E4-WM5-Y217A00