Upgrade with Rancho RS5000X Shocks! Rancho RS5000X shocks feature a unique, exclusive rebound valving system and advanced compression phase which improves overall handling and performance on and off-road. Exclusive progressive engagement valving is custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimizes a rough ride. Rancho RS5000X shocks also feature a 16mm nitro-carburized piston rod to resist scuffs & corrosion, double-welded loops at stress areas, 35mm sintered iron piston for enhanced structural integrity and polyvinyl protective boot, polyurethane rebound bumper and rubber bushings help absorb ride harshness while the fluon-banded piston enhances responsiveness to changing road conditions for an overall smoother ride, a large twin-tube body filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248 degrees fahrenheit, nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixture to reduce damping performance fade and foaming and a compression control valve is custom-tuned for each vehicle to regulate fluid transfer to absorb impacts without disc flutter and help maintain shock motion control. Rancho RS5000X shocks are built to last featuring low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the application-specific piston delivers heightened control of shock motion due to the expanded piston area. You can buy Rancho shocks with confidence as they come with Rancho's Limited Lifetime Warranty. | Vehicle Compatibility - Fits 2011-2013 Ram 2500 Laramie, Laramie Longhorn, Outdoorsman, SLT, ST, and SXT 4WD with 4" Lift.