Rancho RS9000XL Adjustable Shock Absorber for Select 2011-2025 Chevrolet/GMC 2500/3500 HD (RS994377)

Fits select 2011-2025 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD trucks. This Rancho RS9000XL adjustable shock absorber (RS994377) provides manual damping control for heavy-duty applications, allowing you to dial in suspension firmness based on whether you are empty, hauling heavy payloads, or towing trailers.

Built with a massive tri-tube body (up to 2.38 inches), this shock uses nitrogen gas pressure between 45 and 60 PSI to minimize aeration and foaming. The internal graphite-filled fluon-banded piston and polyurethane bushings reduce friction and ride harshness, while the all-weather fluid ensures consistent performance in temperatures ranging from -40°F to 248°F. Each shock is finished with a dual-component 2K paint for maximum chip resistance in harsh environments.

• Damping Control: 9-position manual adjustment knob for customized firmness.
• Body Design: Large tri-tube body with all-weather fluid for cooler operation.
• Construction: Low-friction, self-lubricating seal and polyvinyl protective boot.
• Temperature Range: Rated for -40°F to 248°F internal operating temperatures.
• Piston Type: Graphite-filled fluon-banded piston for smoother compression.
• Finish: 2K paint finish over a liquid metallic base for superior durability.
• Manufacturer Part Number: RS994377