Rancho RS90000XL 0″ Rear Lift Shocks for 2011-2022 Chevy Silverado 3500HD

Description
Rancho RS90000XL 0″ Rear Lift Shocks for 2011-2022 Chevy Silverado 3500HD

Rancho RS9000XL 0″ Rear Lift Shocks for 2011-2022 Chevy Silverado/Sierra 3500HD

Part Number: RS999379

Summary: The Rancho RS9000XL series provides industry-leading versatility for heavy-duty truck owners who demand total control over their ride quality. Featuring a 9-position manual adjustment knob, these shocks allow you to instantly tune your damping levels to compensate for varying payloads or towing requirements. Whether you are commuting empty or hauling a heavy fifth-wheel, this Tier 2 adjustable system solves the “one size fits all” compromise of factory suspension by providing custom-tailored comfort and stability.

Features

• 9-Position Manual Tuning: A global compression adjustment knob provides nine distinct levels of damping force to ensure the perfect balance between street comfort and heavy-duty towing stability.
• Large Shock Body: The 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during long-haul towing.
• Nitrogen Gas Pressurization: High-pressure gas charge provides a consistent response by minimizing oil foaming to ensure fade-free performance under load.
• Heavy-Duty 18mm Nitro-Carb Rod: A hardened piston rod provides exceptional structural rigidity and corrosion resistance to ensure long-term durability in harsh environments.

Technical Specifications

Fitment

• 2011-2022 Chevy Silverado 3500HD
• 2011-2022 GMC Sierra 3500HD
• Note: Designed for vehicles at factory rear ride height (0″ lift).

What’s Included

• Includes 2 Shocks
• Protective Red Dust Boots
• Required Installation Bushings and Washers

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force between setting 1 and setting 9, offering the widest tuning range in its class.
• Performance Benefit: Eliminates the harsh “unloaded” bounce common in 3500HD trucks while providing the necessary stiffness to control sway when fully loaded.

Related Products

RS5000X (Rear):
Rancho RS5000X 0" Rear Lift Shocks for 2011-2022 Chevy Silverado 3500HD

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for 2011-2022 Chevy Silverado 3500HD

RS7MT (Rear):
Rancho RS7MT 0" Rear Lift Shocks for 2011-2022 Chevy Silverado 3500HD

RS7MT (Front):
Rancho RS7MT 0" Front Lift Shocks for 2011-2022 Chevy Silverado 3500HD

Front Only (Same Series):
Rancho RS90000XL 0" Front Lift Shocks for 2011-2022 Chevy Silverado 3500HD

RS5000X (Kit):
Rancho RS5000X 0" Lift Shocks for 2011-2022 Chevy Silverado 3500HD

RS7MT (Kit):
Rancho RS7MT 0" Lift Shocks for 2011-2025 Chevy Silverado 3500HD

RS90000XL (Kit):
Rancho RS90000XL 0" Lift Shocks for 2011-2025 Chevy Silverado 3500HD

Frequently Asked Questions

How do I adjust the settings on these shocks?
The RS9000XL features an external 9-position knob located at the base of the shock body that can be turned by hand to increase or decrease firmness.

Do these shocks provide any lift to the rear of my truck?
No, these shocks are configured for 0-inches of lift and are designed to replace the factory-length dampers on stock-height vehicles.

What setting should I use for daily driving?
Most users find settings 1-3 ideal for an empty bed to maximize comfort, while settings 7-9 are recommended for maximum stability when towing or hauling heavy loads.