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

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

Rancho RS9000XL 4″ Rear Lift Shocks for 2011-2018 Chevy Silverado/Sierra 2500HD/3500HD

Part Number: RS999381

Summary: The Rancho RS9000XL series provides industry-leading adjustability for heavy-duty trucks frequently transitioning between unloaded commuting and maximum payload hauling. Featuring a globally recognized 9-position manual tuning knob, these shocks allow drivers to instantly customize damping profiles to manage the increased center of gravity associated with a 4-inch lift. This versatility eliminates the compromise between street comfort and the firm control required for towing or off-road excursions on the Silverado and Sierra HD platforms.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping control to ensure the perfect ride quality for varying loads and terrain.
• Large Shock Body: The 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy-duty cycles.
• Nitrogen Gas Charged: High-pressure gas integration provides a reduction in aeration and foaming to ensure consistent valving performance under rapid cycling.
• Protective Boot: A heavy-duty polyvinyl accordion boot provides a shield for the piston rod against debris and rock strikes to ensure long-term seal integrity.

Technical Specifications

Fitment

• 2011-2018 Chevy Silverado 2500HD
• 2011-2018 GMC Sierra 3500HD
• Note: Designed specifically for vehicles equipped with 4-inch rear lift height.

What’s Included

• Includes 2 Shocks
• Protective Dust Boots
• Installation Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a massive 400% change in damping force between setting 1 and 9, offering more control than standard fixed-rate shocks.
• Performance Benefit: The driver gains the ability to stiffen the rear suspension for heavy trailers or soften it for daily driving, effectively solving the “harsh ride” common in lifted heavy-duty trucks.

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

Front Only (Same Series):
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

RS90000XL (Kit):
Rancho RS90000XL 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 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 4 inches of lift?
No, these shocks do not create lift; they are specifically length-tuned to provide the correct travel and damping for a truck already equipped with a 4-inch rear lift kit.

Can I use these on a stock height truck?
No, with an extended length of 29.4 inches, these are specifically configured for 4-inch lift heights to prevent the shock from bottoming out during normal operation.