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

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

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

Part Number: RS999377

Summary: The Rancho RS9000XL series provides the ultimate in ride control for your GMC Sierra 2500HD. Featuring a 9-position manual adjustment knob, these shocks allow you to instantly tune your damping profile to match changing loads or terrain. Whether you are daily driving, towing a heavy trailer, or heading off-road, this set provides a custom-tailored solution to eliminate the compromise between comfort and control for heavy-duty trucks.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping to ensure the driver can transition from a soft street ride to firm control for towing.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy hauling.
• Nitrogen Gas Charged: High-pressure gas charge provides a reduction in aeration and foaming to ensure consistent damping performance under stress.
• Protective Boot: A heavy-duty liquid metallic finish and included dust boot provide a barrier against road debris to ensure long-term seal durability.

Technical Specifications

Fitment

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

What’s Included

• Includes Full Set (See Below)
• (2) Rancho RS999377 Front Shocks
• (2) Rancho RS999379 Rear Shocks
• Protective Red Dust Boots

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force, giving this kit the widest tuning range in the heavy-duty aftermarket.
• Performance Benefit: Eliminates the “one size fits all” damping approach, allowing the driver to firm up the suspension for heavy payloads and soften it for unladen highway cruising.

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

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

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

RS90000XL (Front):
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

Frequently Asked Questions

Do I need tools to adjust the shock stiffness?
No, the 9-position knob is designed for manual adjustment by hand, allowing you to change your ride quality in seconds without tools.

Will these shocks lift my GMC Sierra?
No, these shocks are configured for a 0-inch lift and are intended to replace factory-length shocks while maintaining stock ride height.

What is the benefit of the larger 2.75-inch body?
The larger body houses more oil, which helps dissipate heat more effectively than standard shocks, preventing “shock fade” during heavy-duty use.