Rancho RS90000XL 5-6″ Lift Shocks for 2001-2010 GMC Sierra 2500HD

Description
Rancho RS90000XL 5-6″ Lift Shocks for 2001-2010 GMC Sierra 2500HD

Rancho RS9000XL 5-6″ Lift Shocks for 2001-2010 GMC Sierra 2500HD

Part Number: RS999055 / RS999056

Summary: The Rancho RS9000XL series delivers industry-leading versatility for heavy-duty trucks and SUVs through its signature 9-position manual tuning system. This complete set of four shocks allows drivers to instantly transition from a soft street ride to a firm setting for heavy towing or aggressive off-road use. Specifically configured for vehicles with 5-6 inches of lift, these shocks provide the necessary travel and damping control to manage increased unsprung weight and higher centers of gravity.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping to ensure custom-tailored ride control for various payloads.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operation during heavy-duty cycles.
• Nitrogen Gas Charged: High-pressure gas optimization provides immediate response to road imperfections to ensure consistent tire-to-ground contact.
• 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

• 2001-2010 GMC Sierra 2500HD
• 2003-2009 Hummer H2
• Note: Fits models equipped with 5-6 inches of suspension lift.

What’s Included

• (2) Rancho RS999055 Front Shocks
• (2) Rancho RS999056 Rear Shocks
• Protective Dust Boots

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force, moving from a comfortable “plush” feel to a “firm” performance setting without removing the shock.
• Performance Benefit: Eliminates the compromise between daily driving comfort and the stiffness required for hauling, providing total control over your vehicle’s handling dynamics.

Related Products

RS7MT (Rear):
Rancho RS7MT 5-6" Rear Lift Shocks for 2001-2010 GMC Sierra 2500HD

RS7MT (Front):
Rancho RS7MT 5-6" Front Lift Shocks for 2001-2010 GMC Sierra 2500HD

RS90000XL (Rear):
Rancho RS90000XL 5-6" Rear Lift Shocks for 2001-2010 GMC Sierra 2500HD

RS90000XL (Front):
Rancho RS90000XL 5-6" Front Lift Shocks for 2001-2010 GMC Sierra 2500HD

RS7MT (Kit):
Rancho RS7MT 5-6" Lift Shocks for 2001-2010 GMC Sierra 2500HD

Frequently Asked Questions

Do I need tools to adjust the shock stiffness?
No, the RS9000XL features an external manual knob that can be turned by hand to adjust the damping settings in seconds.

Will these shocks lift my GMC Sierra?
No, these shocks do not create lift. They are specifically lengthened and tuned to work with vehicles that already have a 5-6 inch suspension lift kit installed.

Are these shocks nitrogen charged?
Yes, they are nitrogen gas pressurized to minimize air-to-oil mixture (foaming), which maintains consistent performance during rapid cycling.