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: 00651860597911 Brand Name: Bilstein Extended Length (MM): 664.2 Reservoir: No Extended Length (IN): 26.15 Finish: Zinc Plated Spring Seat Included: No Series: B8 5100 Collapsed Length (MM): 410.0 Internal Design: Monotube Boot Included: Black Bellows Adjustable Damping: Non-Adjustable Upper Mount Type: Cantilever Collapsed Length (IN): 16.14 Lower Mount Type: Eye 14.4mm Body Diameter (ID): 46mm Body Design: Smooth Body (Non-Coilover) 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 3.5500 x 3.5500 inches Weight: 5.9500 lb PDF: USA SDS_Shock_Air Spring_V2_EN Generic_instructions_02