The Bilstein 5125 Series (33-230320) is a high-performance 46mm monotube gas pressure shock absorber designed specifically for custom lifted trucks and SUVs. Featuring a zinc-plated finish and a unique velocity-sensitive, digressive piston, this shock reacts instantly to changing road and off-road conditions to maintain maximum stability. Specifications: - Series: 5125 - Extended Length: 22.50 in (571.5 mm) - Collapsed Length: 14.06 in (357.1 mm) - Valving: 255/70 - Upper/Lower Mount: 5/8 inch Hourglass Eyelet Package Contents: - 1x Bilstein 33-230320 Shock Absorber - 1x Black Protective Boot - 1x Hardware Installation Kit (Bushings and Sleeves)