Smooth Performance: Polyurethane rebound bumper and bushings and graphite-filled fluon-banded piston help absorb ride harshness and enhance responsiveness to changing road conditions for an overall smoother ride Strong and Durable: Features an application-specific 18mm nitro-carburized piston rod to resist scuffs and corrosion, double-welded loops at stress areas and 1.25-in. sintered iron piston for enhanced structural integrity For Maximum Performance: Recognized as the first nine-position manually adjustable shock series in the off-road market; allows customized damping control and firmness for on-road and off-road flexibility Nitrogen Gas Charged: Nitrogen gas pressurized to 120 PSI to minimize air-to-oil mixture and reduce damping performance fade and foaming Vehicle Compatibility: Fits 2014-2018 Silverado 1500 with 0” Lift; also compatible with 2014-2018 Sierra 1500 Base, SLE, SLT except heavy duty and without electronic adjustable suspension; includes a limited lifetime warranty Recognized as the first nine-position manually adjustable ride control series in the off-road market, Rancho RS9000XL struts deliver unprecedented control and performance. Ideal for on and off-road use, towing and more, the adjustable damping enhances ride characteristics by counteracting the additional unsprung mass inherent in larger tire and wheel combinations. Polyurethane bushings enhance performance and durability while a boot protects the shock rod and oil seal. Finding your perfect setting depends on what you’re doing. If you’re towing something heavy, you’ll want to adjust up, while if you don’t have a load, turn it down. This flexibility is the big advantage of the RS9000XL shock – you can adjust the setting as often as you need to. Hauling a boat or trailer on the weekend? Adjust the shock between 7 and 9. Then when you get back home and are commuting back-and-forth to work, dial it down to between 1 and 3 for optimum performance. From its humble beginnings in 1955 to the present, Rancho has been dedicated to delivering suspension systems, shock absorbers and accessories that deliver rugged on- and off-road performance for trucks and SUVs. Clarence Shook opened the company in the Los Angeles area in 1955. Looking to help off-roaders navigate the desert, the company sells new and used parts and accessories. In addition, the Shook family customizes four-wheel drive vehicles to handle the rigors of the trail.