ACDelco Specialty Premium Monotube Shocks are designed to meet the demands of sport utility vehicles, 4x4s and light-duty trucks, which require greater control, handling, safety, and performance. These premium shocks feature consistent damping and rapid response characteristics, large chromed piston rods, high pressure nitrogen gas up to 275 psi, and a single tube design. Additionally, ACDelco Specialty Premium Monotube Shocks utilize floating piston technology that completely separates the oil from the nitrogen gas, producing extremely consistent operational control due to aeration elimination, and superior heat dissipation.