Rancho RS90000XL 4″ Lift Shocks for 2011-2018 Chevy Silverado 2500HD

Description
Rancho RS90000XL 4″ Lift Shocks for 2011-2018 Chevy Silverado 2500HD

Rancho RS9000XL 4″ Lift Shocks for 2011-2018 Chevy Silverado 2500HD

Part Number: RS999380 / RS999381

Summary: The Rancho RS9000XL series provides the ultimate in ride control for the heavy-duty Chevy Silverado and GMC Sierra 2500HD/3500HD. Featuring a globally recognized 9-position manual adjustment knob, these shocks allow drivers to instantly tune damping levels to suit specific towing, hauling, or off-road requirements. Specifically configured for vehicles with a 4-inch lift, this set ensures your leveled or lifted truck maintains optimal geometry and performance across various terrains.

Features

• MyRide 9-Position Tuning: A manual adjustment knob provides nine levels of damping control to ensure the perfect balance between street comfort and heavy-duty towing stability.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during high-load applications.
• Nitrogen Gas Pressurized: High-pressure gas charging provides a reduction in aeration and foaming to ensure consistent damping response under aggressive use.
• Heavy-Duty Nitro-Carburized Rod: The hardened piston rod provides superior scuff and corrosion resistance to ensure long-term seal integrity.

Technical Specifications

Fitment

• 2011-2018 Chevy Silverado 2500HD
• 2011-2018 GMC Sierra 3500HD
• Note: Designed specifically for models equipped with 4-inch suspension lift systems.

What’s Included

• Includes 4 Shocks (Full Set)
• Protective Red Dust Boots
• Required Mounting Hardware and Bushings

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows the user to override the “one size fits all” valving found in standard shocks, providing a truly custom suspension feel.
• Performance Benefit: Eliminates the harsh ride often associated with lifted heavy-duty trucks while providing the stiffness needed to control heavy trailers at the turn of a dial.

Related Products

RS5000X (Rear):
Rancho RS5000X 4" Rear Lift Shocks for 2011-2018 Chevy Silverado 2500HD

RS7MT (Front):
Rancho RS7MT 4" Front Lift Shocks for 2011-2018 Chevy Silverado 2500HD

RS5000X (Front):
Rancho RS5000X 4" Front Lift Shocks for 2011-2018 Chevy Silverado 2500HD

RS7MT (Rear):
Rancho RS7MT 4" Rear Lift Shocks for 2011-2018 Chevy Silverado 2500HD

RS90000XL (Rear):
Rancho RS90000XL 4" Rear Lift Shocks for 2011-2018 Chevy Silverado 2500HD

RS90000XL (Front):
Rancho RS90000XL 4" Front Lift Shocks for 2011-2018 Chevy Silverado 2500HD

RS5000X (Kit):
Rancho RS5000X 4" Lift Shocks for 2011-2018 Chevy Silverado 2500HD

RS7MT (Kit):
Rancho RS7MT 4" Lift Shocks for 2011-2018 Chevy Silverado 2500HD

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features a manual 9-position knob located at the base of the shock body. Simply turn the dial to a lower number for a softer ride or a higher number for increased firmness.

Will these shocks provide my truck with 4 inches of lift?
No, these shocks do not create lift. They are specifically length-tuned and configured for vehicles that already have a 4-inch suspension lift installed.

Are these shocks suitable for heavy towing?
Yes. By adjusting the shocks to a higher setting (typically 7-9), you increase the damping force, which significantly improves stability and reduces sway while hauling heavy loads.