Rancho RS90000XL 4″ Front Lift Shocks for 2011-2018 GMC Sierra 3500HD

Description
Rancho RS90000XL 4″ Front Lift Shocks for 2011-2018 GMC Sierra 3500HD

Rancho RS9000XL 4″ Front Lift Shocks for 2011-2018 GMC Sierra 3500HD

Part Number: RS999380

Summary: The Rancho RS9000XL series provides industry-leading adjustability for the GMC Sierra 3500HD, allowing drivers to switch between nine different levels of performance. This Tier 2 adjustable system is specifically configured for vehicles with a 4-inch front lift, solving the problem of “one size fits all” valving. Whether you are navigating empty highways or hauling heavy payloads, the manual tuning knob ensures your suspension responds perfectly to the immediate environment.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping to ensure the perfect ride quality for towing, hauling, or off-road use.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy-duty cycles.
• Nitrogen Gas Charged: High-pressure gas charging provides immediate response to road irregularities to ensure consistent tire contact and reduced aeration.
• Protective Boot: A heavy-duty poly-vinyl accordion boot provides a physical barrier for the piston rod to ensure long-term seal integrity against road debris.

Technical Specifications

Fitment

• 2011-2018 GMC Sierra 3500HD
• Note: Designed specifically for vehicles equipped with 4-inch front lift kits.

What’s Included

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

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force between setting 1 and 9, offering the most versatile tuning range in its class.
• Performance Benefit: Eliminates the compromise between comfort and control, giving HD truck owners the ability to firm up the front end for heavy trailers or soften it for daily commuting.

Related Products

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

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

Rear Only (Same Series):
Rancho RS90000XL 4" Rear Lift Shocks for 2011-2018 GMC Sierra 3500HD

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

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

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

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

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

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features a clearly numbered 9-position knob 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 3500HD by 4 inches?
No, these shocks do not create lift. They are specifically lengthened and valved to work with a vehicle that has already had a 4-inch lift kit installed.

What is the benefit of the larger 2.75-inch body?
The increased oil capacity allows the shock to dissipate heat more effectively than standard shocks, preventing performance fade during heavy-duty use or off-road driving.