Rancho RS5000X Shock Absorber for 2011-2018 Chevrolet Silverado & GMC Sierra 2500/3500 HD RS55383

Fits 2011-2018 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD (all submodels).

The Rancho RS5000X (RS55383) is a gas-pressurized twin-tube shock absorber engineered to improve the handling and ride quality of heavy-duty pickups. Featuring Rancho's exclusive Progressive Engagement Valving (PEV), this shock is custom-tuned for each application to reduce initial impacts at low speeds and minimize ride harshness. Its Cross Tuned technology utilizes an advanced rebound and compression valving system to provide consistent control both on-road and in demanding off-road conditions.

• Durable Construction: Features a 16mm nitro-carburized piston rod for superior scuff and corrosion resistance, plus double-welded loops at high-stress points.
• Advanced Internals: Includes a 35mm sintered iron piston for enhanced structural integrity and a low-friction, self-lubricating seal to maintain gas and oil retention.
• Thermal Performance: Large twin-tube body filled with all-weather fluid allows for cooler operation and reliable performance in internal temperatures ranging from -40 to 248°F.
• Fade Reduction: Nitrogen gas pressurized to 150 PSI minimizes air-to-oil mixture (aeration) to prevent damping fade and foaming.
• Hardware Included: Comes with polyurethane rebound bumpers, rubber bushings to absorb vibration, and a polyvinyl protective boot.
• Manufacturer Part Number: RS55383