Easy bolt-on installation. Includes pre-loaded coil. No strut disassembly required. Maintains smooth, factory-like ride. Increased ground clearance. Application specific velocity sensitive valving. Structurally engineered for lifted applications. Nitrogen gas charged to improve ride, handling, and reduce shock oil aeration. Offers improved tire contact with the road for increased stability and performance. Infinitely Variable Damping. Leak-proof piston seal. Special formulated low friction shock oil. Massive 1 3/8in Bore. Hardened chromed piston rod provides superior corrosion resistance and enhances sealing properties. 3-year Limited Warranty.