Rancho RS5000X Gas Shock Absorber for 2011-2019 Chevrolet/GMC Silverado/Sierra 2500 HD/3500 HD - RS55381

Fits select 2011-2019 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD models. The Rancho RS5000X series gas shock absorber (RS55381) features a unique Cross Tuned technology that utilizes a progressive engagement valving system. This design allows for a smooth, controlled ride during normal conditions while providing firm, precise handling when the road gets rough. Built to withstand extreme thermal changes from -40 to 248°F, the large twin-tube body is filled with all-weather fluid to maintain performance in any environment.

• Precision Valving: Progressive Engagement Valving reduces initial impact harshness at low speeds while the Compression Control Valve regulates fluid transfer to prevent disc flutter.
• Heavy-Duty Construction: Features a 16mm nitro-carburized piston rod to resist scuffs and corrosion, and a 35mm sintered iron piston for structural integrity.
• Gas Pressurized: Nitrogen gas is pressurized to 150 PSI to minimize air-to-oil foaming and prevent damping fade under load.
• Durability: Equipped with double-welded loops at high-stress points, a low-friction self-lubricating seal, and a protective polyvinyl boot.
• Specs: Twin-tube design, fluon-banded piston, polyurethane rebound bumper, and rubber bushings for enhanced vibration damping.
• Part Number: RS55381