Rancho RS90000XL 0″ Rear Lift Shocks for 2011-2020 GMC Sierra 2500HD

Description
Rancho RS90000XL 0″ Rear Lift Shocks for 2011-2020 GMC Sierra 2500HD

Rancho RS9000XL 0″ Rear Lift Shocks for 2011-2020 GMC Sierra 2500HD

Part Number: RS999379

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 of the GMC Sierra 2500HD to instantly transition between a soft street ride and the firm control required for heavy towing or hauling. Engineered to handle the high-stress demands of 3/4-ton and 1-ton applications, these shocks deliver a custom-tuned driving experience without the need for component changes.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping force to ensure the vehicle is perfectly calibrated for varying load weights or terrain.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy work cycles.
• Nitrogen Gas Charged: High-pressure gas integration provides a reduction in aeration and foaming to ensure consistent damping performance under rapid cycling.
• Heavy-Duty Piston: A 1.25-inch sintered iron piston provides structural rigidity and smooth valving transitions to ensure long-term durability on rough job sites.

Technical Specifications

Fitment

• 2011-2020 GMC Sierra 2500HD
• 2011-2020 GMC Sierra 3500HD
• Note: Designed for vehicles at factory rear ride height (0″ lift).

What’s Included

• Includes 2 Shocks (Pair)
• Protective Dust Boots
• Required Bushings and Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s Tri-Tube design and 9-position valving offer a broader range of control than standard monotube or fixed-valving shocks.
• Performance Benefit: Eliminates the “one-size-fits-all” compromise, allowing the driver to stiffen the rear suspension for stability while towing and soften it for unladen daily driving.

Related Products

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for 2011-2020 GMC Sierra 2500HD

RS5000X (Rear):
Rancho RS5000X 0" Rear Lift Shocks for 2011-2020 GMC Sierra 2500HD

RS7MT (Rear):
Rancho RS7MT 0" Rear Lift Shocks for 2011-2020 GMC Sierra 2500HD

RS7MT (Front):
Rancho RS7MT 0" Front Lift Shocks for 2011-2020 GMC Sierra 2500HD

Front Only (Same Series):
Rancho RS90000XL 0" Front Lift Shocks for 2011-2020 GMC Sierra 2500HD

RS5000X (Kit):
Rancho RS5000X 0" Lift Shocks for 2011-2020 GMC Sierra 2500HD

RS7MT (Kit):
Rancho RS7MT 0" Lift Shocks for 2011-2020 GMC Sierra 2500HD

RS90000XL (Kit):
Rancho RS90000XL 0" Lift Shocks for 2011-2020 GMC Sierra 2500HD

Frequently Asked Questions

How do I adjust the firmness of 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 damping resistance.

Will these shocks lift my GMC Sierra?
No, these shocks are configured for 0-inch lift and are designed to replace factory-length shocks; they do not provide any lift to the vehicle.

Are these shocks sold as a pair?
Yes, this specific SKU (2xRS999379) includes a pair of two shocks for the rear of your vehicle.