Rancho RS90000XL 4″ Rear Lift Shocks for 2011-2018 Chevy Silverado 3500HD

Description
Rancho RS90000XL 4″ Rear Lift Shocks for 2011-2018 Chevy Silverado 3500HD

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

Part Number: RS999381

Summary: The Rancho RS9000XL series provides industry-leading versatility for heavy-duty trucks through its globally recognized adjustable damping technology. Featuring a 9-position manual tuning knob, these shocks allow owners to instantly transition from a soft street ride to a firm setting optimized for heavy towing or hauling. Engineered to accommodate a 4-inch rear lift, these shocks solve the problem of ride compromise by putting total control of the vehicle’s compression and rebound characteristics in the driver’s hands.

Features

• 9-Position Tuning Knob: A manual adjustment dial provides 400% change in damping force to ensure the perfect ride for any load or terrain.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy-duty use.
• Nitrogen Gas Charged: High-pressure gas optimization provides immediate response to road imperfections to ensure consistent tire-to-road contact.
• Protective Boot: A durable polyvinyl accordion boot provides a physical barrier for the piston rod to ensure long-term seal integrity against road debris.

Technical Specifications

Fitment

• 2011-2018 Chevy Silverado 3500HD
• 2011-2018 GMC Sierra 3500HD
• Note: Configured for vehicles with 4″ rear lift height.

What’s Included

• Includes 2 Shocks
• Protective Dust Boots
• Mounting Hardware (where applicable)

Why Choose This Product?

• Engineering Advantage: Unlike static shocks, the RS9000XL uses a proprietary tri-tube design and an adjustable valving circuit that allows for massive changes in damping profiles without replacing hardware.
• Performance Benefit: Drivers gain the ability to eliminate “trailer sway” and rear-end sag when towing by simply clicking the dial to a firmer setting.

Related Products

RS5000X (Front):
Rancho RS5000X 4" Front Lift Shocks for 2011-2018 Chevy Silverado 3500HD

RS5000X (Rear):
Rancho RS5000X 4" Rear Lift Shocks for 2011-2018 Chevy Silverado 3500HD

RS7MT (Front):
Rancho RS7MT 4" Front Lift Shocks for 2011-2018 Chevy Silverado 3500HD

RS7MT (Rear):
Rancho RS7MT 4" Rear Lift Shocks for 2011-2018 Chevy Silverado 3500HD

Front Only (Same Series):
Rancho RS90000XL 4" Front Lift Shocks for 2011-2018 Chevy Silverado 3500HD

RS5000X (Kit):
Rancho RS5000X 4" Lift Shocks for 2011-2018 Chevy Silverado 3500HD

RS90000XL (Kit):
Rancho RS90000XL 4" Lift Shocks for 2011-2018 Chevy Silverado 3500HD

RS7MT (Kit):
Rancho RS7MT 4" Lift Shocks for 2011-2018 Chevy Silverado 3500HD

Frequently Asked Questions

How do I adjust the settings on these shocks?
The RS9000XL features a manual knob located at the base of the shock body. You can turn the knob by hand to any of the 9 indexed positions, with 1 being the softest and 9 being the firmest.

Will these shocks lift my truck 4 inches?
No, these shocks do not provide lift. They are specifically valved and sized with the correct extended and compressed lengths to function on a truck that already has a 4-inch rear lift kit installed.

Do I need tools to change the firmness?
No tools are required for adjustment. The external dial is designed for easy manual tuning while the vehicle is parked, allowing for quick changes at the job site or trailhead.