Gabriel 646177 FleetLine Heavy Duty Shock Fleetline Heavy Duty Specialty Shock Absorber Fleetline self-steer axle shock absorber GasSLX adjustable shocks allows you to choose from one of three settings with quality components means less wear and tear on other costly suspension parts Hydraulic rebound stop prevents impact damage to the shock and vehicle mounting components Installation Specifications Compatibility Procedures Makes &amp; Models Features Recommendations Legacy Products Rugged, self-compensating piston seal for consistent damping ability and reduced fade throughout the shock life Multi-lip piston rod seal leads to longer product life 360<span class="a-text-bold"></span> end mounts provide superior structural strength Cold formed and arcwelded eye ring end mounts (most applications) for greater tensile strength Hydraulic extension stop provides unparalleled system durability and inhibits shocks from topping out and suspension from over-extending