The Monroe Shocks & Struts Shock Absorber is designed to provide superior durability and force absorption for semi-truck suspension parts. It minimizes wear and tear while offering more efficient and consistent control in applications. The 10-stage valve reacts to a wide range of driving conditions, providing high tensile strength for maximum durability. The shock absorber is nitrogen gas-charged to maintain tire to road contact by reducing aeration. FleetPride is your First Click in Heavy Duty®.