Rancho RS90000XL 0″ Lift Shocks for 2005-2006 Ford F-450

Description
Rancho RS90000XL 0″ Lift Shocks for 2005-2006 Ford F-450

Rancho RS9000XL 0″ Lift Shocks for 2005-2006 Ford F-450 / F-550

Part Number: RS999042 / RS999116

Summary: The Rancho RS9000XL series provides the ultimate in ride control for heavy-duty Ford trucks. Featuring a 9-position manual tuning knob, these shocks allow owners to instantly adjust damping levels to compensate for varying payloads and towing requirements. Whether you are hauling a heavy trailer or driving unladen, this Tier 2 adjustable system solves the common “stiff ride” issue associated with commercial-grade suspension by offering a custom-tuned feel for any environment.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping to ensure the driver can transition from a soft street ride to firm control for heavy towing.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure consistent performance and reduced fade during high-temp operation.
• Nitrogen Gas Charged: High-pressure gas optimization provides a faster response rate and reduced aeration to ensure consistent damping on rough terrain.
• Protective Boot: A heavy-duty liquid metallic finish and included bellows boot provide a physical barrier against debris to ensure long-term seal integrity.

Technical Specifications

Fitment

• 2005-2006 Ford F-450 Super Duty
• 2005-2006 Ford F-550 Super Duty
• Note: Designed for vehicles at factory ride height (0″ lift).

What’s Included

• Includes Full Set (4 Shocks)
• Protective Dust Boots
• Installation Bushings and Hardware

Why Choose This Product?

• Engineering Advantage: The RS9000XL is one of the few heavy-duty shock series that allows for manual bypass adjustment without removing the shock from the vehicle.
• Performance Benefit: Drivers gain the ability to “firm up” the rear suspension only when hitched to a trailer, preventing the “porpoising” effect common in F-450/F-550 models.

Related Products

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for 2005-2006 Ford F-450

RS5000X (Rear):
Rancho RS5000X 0" Rear Lift Shocks for 2005-2006 Ford F-450

RS90000XL (Rear):
Rancho RS90000XL 0" Rear Lift Shocks for 2005-2006 Ford F-450

RS7MT (Front):
Rancho RS7MT 0" Front Lift Shocks for 2005-2006 Ford F-450

RS90000XL (Front):
Rancho RS90000XL 0" Front Lift Shocks for 2005-2006 Ford F-450

RS5000X (Kit):
Rancho RS5000X 0" Lift Shocks for 2005-2006 Ford F-450

Frequently Asked Questions

How do I adjust the firmness of these shocks?
Each shock features a red 9-position knob at the base. Turning the knob clockwise firms up the ride for towing, while counter-clockwise softens it for daily driving.

Will these shocks lift my Ford F-450?
No, these shocks are configured for 0-inches of lift and are designed to replace your factory dampers while maintaining stock height.

Are these shocks sold as a complete set?
Yes, this specific SKU includes a full set of four shocks for both the front and rear of your vehicle.