Structurally engineered for lifted applications. Application Specific Velocity Sensitive Valving. Includes pre-loaded coil. No strut disassembly required. Maintains smooth, factory-like ride. Nitrogen gas charged to improve ride, handling, and reduce shock oil aeration. Offers improved tire contact with the road for increased stability and performance. Massive 1 3/8" Bore and Hardened chromed piston rod provides superior corrosion resistance and enhances sealing properties. Backed by Rough Country's Limited Lifetime Replacement Warranty.