Rancho RS90000XL 0″ Rear Lift Shocks for 1999-2004 Ford F-450

Description
Rancho RS90000XL 0″ Rear Lift Shocks for 1999-2004 Ford F-450

Rancho RS9000XL 0″ Rear Lift Shocks for 1999-2004 Ford F-450 / F-550

Part Number: RS999126

Summary: The Rancho RS9000XL series provides industry-leading versatility for heavy-duty Ford trucks. Featuring a 9-position manual adjustment knob, these shocks allow owners to instantly tune damping levels to compensate for varying payload weights and towing requirements. Whether you are hauling a heavy trailer or driving unladen, this adjustable solution eliminates the compromise between stiff load support and street comfort.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping resistance to ensure the driver can optimize 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 nitrogen gas provides a consistent response by minimizing oil foaming and aeration to ensure fade-free performance.
• Heavy-Duty Piston: A 1.25-inch sintered iron piston provides structural integrity and precise valving flow to ensure long-term durability under extreme stress.

Technical Specifications

Fitment

• 1999-2004 Ford F-450
• 1999-2004 Ford F-550
• Note: Designed for vehicles at stock height (0″ lift).

What’s Included

• Includes 2 Shocks
• Protective Red Dust Boots
• Required Mounting Bushings

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force between setting 1 and 9, offering more control than a standard fixed-rate shock.
• Performance Benefit: Reduces “squat” and sway while towing, providing the driver with increased confidence and vehicle stability under heavy loads.

Related Products

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for 1999-2004 Ford F-450

RS5000X (Rear):
Rancho RS5000X 0" Rear Lift Shocks for 1999-2004 Ford F-450

RS7MT (Front):
Rancho RS7MT 0" Front Lift Shocks for 1999-2004 Ford F-450

Front Only (Same Series):
Rancho RS90000XL 0" Front Lift Shocks for 1999-2004 Ford F-450

RS5000X (Kit):
Rancho RS5000X 0" Lift Shocks for 1999-2004 Ford F-450

RS90000XL (Kit):
Rancho RS90000XL 0" Lift Shocks for 1999-2004 Ford F-450

Frequently Asked Questions

How do I adjust the settings on these shocks?
The shocks feature an external manual knob located at the base of the shock body. You can turn the knob by hand to select settings 1 (softest) through 9 (firmest).

Will these shocks lift my Ford F-450?
No, these shocks are designed to work with vehicles at the factory ride height (0″ of lift) and do not provide any lift themselves.

Do these shocks come with the red boots?
Yes, all RS9000XL shocks include Rancho’s signature red protective boots to help shield the piston rod from debris.