Rancho RS90000XL 5-6″ Lift Shocks for 2005-2007 Chevy Silverado 1500HD 4WD

Description
Rancho RS90000XL 5-6″ Lift Shocks for 2005-2007 Chevy Silverado 1500HD 4WD

Rancho RS9000XL 5-6″ Lift Shocks for 2005-2007 Chevy Silverado 1500HD 4WD

Part Number: RS999055

Summary: The Rancho RS9000XL series delivers industry-leading versatility for drivers who demand total control over their ride quality. Featuring a globally recognized 9-position manual adjustment knob, these shocks allow you to instantly tune your damping levels from soft to firm to accommodate varying loads or terrain. Engineered for heavy-duty applications, these large-body shocks provide the increased fluid capacity necessary to maintain consistent performance during towing or off-road use.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping force to ensure the perfect balance between street comfort and off-road firmness.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased oil capacity to reduce fluid aeration and ensure fade-free performance under high-heat conditions.
• Nitrogen Gas Charged: High-pressure gas charging provides optimized tire-to-road contact to ensure improved stability and traction.
• Heavy-Duty Piston: A 1.25-inch sintered iron piston provides structural integrity and consistent valving flow to ensure long-term durability in demanding environments.

Technical Specifications

Fitment

• 2005-2007 Chevy Silverado 1500HD 4WD
• 2003-2009 Hummer H2
• Note: Designed for vehicles equipped with 5-inch to 6-inch suspension lift kits.

What’s Included

• Includes Full Set (See Below)
• (2) RS999055 Front Shocks
• (2) RS999056 Rear Shocks
• Protective Red Dust Boots

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force, offering the widest adjustment range in its class.
• Performance Benefit: Eliminates the compromise between daily driving and heavy-duty use by allowing the driver to dial in exact stiffness for towing or trail riding.

Related Products

RS7MT (Rear):
Rancho RS7MT 5-6" Rear Lift Shocks for 2005-2007 Chevy Silverado 1500HD 4WD

RS7MT (Front):
Rancho RS7MT 5-6" Front Lift Shocks for 2005-2007 Chevy Silverado 1500HD 4WD

RS90000XL (Rear):
Rancho RS90000XL 5-6" Rear Lift Shocks for 2005-2007 Chevy Silverado 1500HD 4WD

RS90000XL (Front):
Rancho RS90000XL 5-6" Front Lift Shocks for 2005-2007 Chevy Silverado 1500HD 4WD

RS7MT (Kit):
Rancho RS7MT 5-6" Lift Shocks for 2005-2007 Chevy Silverado 1500HD 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; simply turn the dial to your desired setting, with 1 being the softest and 9 being the firmest.

Will these shocks provide 6 inches of lift to my truck?
No, these shocks do not create lift. They are specifically valved and length-configured to work with a vehicle that already has a 5-6 inch suspension lift kit installed.

Are the protective boots included?
Yes, this set includes Rancho’s signature red protective boots to shield the shock rod and oil seal from dirt, rocks, and debris.