The Tenneco Line of Monroe Magnum Shock Absorbers are engineered to help fleets reduce cost per mile through improved durability and vehicle control, and increased driver comfort and satisfaction. Key features include a large-diameter nitrocarbonized rod that provides improved compression control and side-load strength; PTFE-coated rod guide bearing that increases durability by minimizing friction between the rod and rod guide; robust hydraulic lock-out design that helps prevent over-extension of the suspension; larger diameter piston to provide greater tuning precision; and an advanced shouldered bushing design to help prevent bushing extrusion and related concerns.