Rancho RS90000XL 5-6″ Lift Shocks for 1999-2007 GMC Sierra 1500 4WD

Description
Rancho RS90000XL 5-6″ Lift Shocks for 1999-2007 GMC Sierra 1500 4WD

Rancho RS9000XL 5-6″ Lift Shocks for 1999-2007 GMC Sierra 1500 4WD

Part Number: RS999057 / RS999297

Summary: The Rancho RS9000XL series provides industry-leading versatility for owners of the GMC Sierra 1500 and Yukon. Featuring a globally recognized 9-position manual adjustment knob, these shocks allow drivers to instantly tune their damping profiles to accommodate varying loads or terrain. Whether you are seeking a soft ride for highway commuting or a firm setting for heavy towing and off-road stability, this set is engineered to handle the increased geometry requirements of a 5 to 6-inch lift.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping control to ensure the vehicle is perfectly calibrated for street, trail, or towing.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy-duty use.
• Nitrogen Gas Charged: High-pressure gas optimization provides a consistent response by minimizing aeration to ensure fade-free performance.
• Polyurethane Bushings: High-density polyurethane material provides enhanced durability compared to standard rubber to ensure long-term pivot point reliability.

Technical Specifications

Fitment

• 1999-2007 GMC Sierra 1500 4WD
• 2000-2006 GMC Yukon
• Note: Fits New Body Style models only. Excludes Electronic Suspension (Z55) and Self-Leveling Nivomat Suspension (ZW7).

What’s Included

• Includes 4 Shocks (Front and Rear Set)
• Protective Red Dust Boots
• Necessary Mounting Hardware and Bushings

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a massive 400% change in damping force, giving you the widest range of control available in a bolt-on shock.
• Performance Benefit: Eliminates the compromise between comfort and capability by allowing the driver to dial in the exact firmness required for the current vehicle weight.

Related Products

RS5000X (Rear):

RS90000XL (Rear):

RS90000XL (Front):

Frequently Asked Questions

How do I adjust the stiffness of these shocks?
The RS9000XL features a 9-position knob located at the base of the shock body. Simply turn the dial to “1” for the softest ride or “9” for maximum firmness.

Will these shocks work with my factory height Sierra?
No, these specific part numbers are configured for vehicles equipped with a 5 to 6-inch suspension lift kit.

Do I need to buy boots separately?
No, these shocks include Rancho’s signature red protective boots to shield the piston rod from debris and corrosion.