Gabriel G64031 Ultra Truck Shock Orifice disk with variable nine-stage valving provides consistent oil flow resulting in improved ride quality on a variety of terrains G-Force technology for quicker response, improved product life, and consistent, reliable ride and control StableSteer valving provides response from all four corners for a stable, safe ride G-Force piston is constructed from iron for durability and longer life, along with the heavy duty compression head valve that withstands extreme impact This item is not for sale in Catalina Island