Rancho RS90000XL 0″ Rear Lift Shocks for 2011-2020 GMC Sierra 3500HD

Description
Rancho RS90000XL 0″ Rear Lift Shocks for 2011-2020 GMC Sierra 3500HD

Rancho RS9000XL 0″ Rear Lift Shocks for 2011-2020 GMC Sierra 3500HD

Part Number: RS999379

Summary: The Rancho RS9000XL series provides industry-leading adjustability for GMC Sierra 3500HD owners who demand versatility from their heavy-duty suspension. Featuring a 9-position manual tuning knob, these shocks allow you to instantly transition from a soft street ride to a firm setting optimized for heavy hauling or towing. Built with a massive 2.75-inch body, these shocks deliver increased fluid capacity to maintain consistent damping performance under the most demanding workloads.

Features

• MyRide 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping control to ensure the perfect ride for any load or terrain.
• Large Shock Body: The 2.75-inch diameter reserve tube provides increased oil capacity to ensure cooler operation and reduced fade during heavy towing.
• Nitrogen Gas Charged: High-pressure gas charging provides a rapid response to road irregularities to ensure consistent tire-to-ground contact.
• Heavy-Duty Nitro-Carburized Rod: A 18mm diameter piston rod provides exceptional structural rigidity to ensure long-term durability in harsh environments.

Technical Specifications

Fitment

• 2011-2020 GMC Sierra 3500HD
• Note: Fits models with 0″ of rear lift. Verified for 2011-2018 chassis applications.

What’s Included

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

Why Choose This Product?

• Engineering Advantage: Rancho’s globally recognized adjustable technology allows for precise damping calibration without removing the shock from the vehicle.
• Performance Benefit: Eliminates the compromise between empty-bed comfort and loaded-down stability, giving the driver total control over the vehicle’s secondary ride characteristics.

Related Products

RS5000X (Rear):
Rancho RS5000X 0" Rear Lift Shocks for 2011-2020 GMC Sierra 3500HD

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for 2011-2020 GMC Sierra 3500HD

RS7MT (Rear):
Rancho RS7MT 0" Rear Lift Shocks for 2011-2020 GMC Sierra 3500HD

RS7MT (Front):
Rancho RS7MT 0" Front Lift Shocks for 2011-2020 GMC Sierra 3500HD

Front Only (Same Series):
Rancho RS90000XL 0" Front Lift Shocks for 2011-2020 GMC Sierra 3500HD

RS5000X (Kit):
Rancho RS5000X 0" Lift Shocks for 2011-2020 GMC Sierra 3500HD

RS90000XL (Kit):
Rancho RS90000XL 0" Lift Shocks for 2011-2020 GMC Sierra 3500HD

RS7MT (Kit):
Rancho RS7MT 0" Lift Shocks for 2011-2020 GMC Sierra 3500HD

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features a manual knob located at the base of the shock; simply turn the dial to your desired setting, with 1 being the softest and 9 being the firmest.

Will these shocks lift my GMC Sierra 3500HD?
No, these shocks do not create lift. They are specifically configured for vehicles at factory ride height (0″ of lift).

What is the benefit of the larger 2.75-inch body?
The larger body houses more oil, which helps dissipate heat more efficiently than standard shocks, preventing the damping “fade” often experienced during long trips with heavy trailers.