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

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

Rancho RS9000XL 0″ Front Lift Shocks for 2011-2020 GMC Sierra 2500HD/3500HD

Part Number: RS999377

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 drivers to instantly transition from a soft street ride to a firm setting optimized for heavy towing or hauling. Engineered specifically for the GMC Sierra 2500HD/3500HD, this Tier 2 adjustable shock solves the “one size fits all” damping compromise by putting ride control directly in the user’s hands.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping resistance to ensure the vehicle is perfectly tuned for daily commuting, off-road use, or maximum payload capacity.
• Large Shock Body: The 2.75-inch diameter reserve tube provides increased fluid capacity to ensure consistent performance and reduced fade during high-temp operations.
• Nitrogen Gas Charged: High-pressure gas integration provides immediate response to road inputs to ensure tire-to-road contact is maintained under varying loads.
• Protective Boot: A heavy-duty polyvinyl accordion boot provides a physical barrier for the piston rod to ensure long-term seal integrity in harsh environments.

Technical Specifications

Fitment

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

What’s Included

• Includes 2 Shocks
• Protective Polyvinyl Boots
• Required Installation Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force between setting 1 and 9, offering more adjustability than any other shock in its class.
• Performance Benefit: Eliminates the harsh “unloaded” bounce common in HD trucks while providing the necessary stiffness to handle heavy tongue weights when towing trailers.

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

Rear Only (Same Series):
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

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 settings on these shocks?
The RS999377 features an external manual knob located at the base of the shock; simply turn the dial to your desired setting (1 for softest, 9 for firmest).

Do these shocks provide any lift to my GMC Sierra?
No, these shocks are configured for a 0-inch lift and are designed to replace factory-length shocks without changing the vehicle’s ride height.

Can I use these shocks if I have a heavy snow plow?
Yes, the adjustable nature of the RS9000XL makes them ideal for front-end loads like plows, as you can increase the firmness to setting 7, 8, or 9 to better support the extra weight.