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

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

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

Part Number: RS999057

Summary: The Rancho RS9000XL series delivers industry-leading versatility for drivers who demand total control over their ride quality. Featuring a 9-position manual tuning knob, these shocks allow you to instantly adjust damping levels to compensate for varying loads or terrain. Whether you are daily driving, towing a heavy trailer, or exploring off-road trails, this Tier 2 adjustable system provides the perfect balance of street comfort and firm performance for your lifted GMC.

Features

• MyRide Tuning System: A 9-position manual adjustment knob provides 400% more damping control variation to ensure the vehicle is perfectly tuned for towing, hauling, or off-road use.
• Large Diameter Body: A 2.75-inch tri-tube body provides increased fluid capacity to ensure cooler operating temperatures during heavy-duty cycles.
• Nitrogen Gas Charging: Pressurized gas charge provides a rapid response rate to ensure consistent tire-to-road contact on uneven surfaces.
• Protective Boot: A heavy-duty liquid metallic finish and included poly-vinyl boot provide maximum protection against debris to ensure long-term seal integrity.

Technical Specifications

Fitment

• 1999-2007 GMC Sierra 1500 4WD
• 2000-2006 GMC Yukon
• Note: New Body Style — Excluding Electronic Suspension (Z55) & Self Leveling Nivomat Suspension (ZW7). Configured for 5-6 inch front lift heights.

What’s Included

• Includes 2 Shocks (Pair)
• Protective Poly-Vinyl Boots
• Mounting Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s tri-tube design and 18mm nitro-carburized piston rod offer superior structural rigidity compared to standard twin-tube shocks.
• Performance Benefit: The ability to manually firm up the suspension prevents “porpoising” while towing and eliminates excessive body roll in corners.

Related Products

RS5000X (Rear):
Rancho RS5000X 5-6" Rear Lift Shocks for 1999-2007 GMC Sierra 1500 4WD

Rear Only (Same Series):
Rancho RS90000XL 5-6" Rear Lift Shocks for 1999-2007 GMC Sierra 1500 4WD

RS90000XL (Kit):
Rancho RS90000XL 5-6" Lift Shocks for 1999-2007 GMC Sierra 1500 4WD

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features a manual 9-position knob located at the base of the shock body. Simply turn the dial to setting 1 for a soft street ride or up to setting 9 for maximum firmness during towing.

Will these shocks lift my GMC Sierra?
No, these shocks do not create lift. They are specifically lengthened and valved to be installed on vehicles already equipped with a 5 to 6-inch suspension lift kit.

What is the benefit of the larger shock body?
The 2.75-inch body holds more hydraulic fluid, which helps dissipate heat faster than smaller shocks, preventing “shock fade” during aggressive driving or heavy hauling.