Rancho RS90000XL 0″ Lift Shocks for 2008-2016 Ford F-450

Description
Rancho RS90000XL 0″ Lift Shocks for 2008-2016 Ford F-450

Rancho RS9000XL 0″ Lift Shocks for 2008-2016 Ford F-450 / F-550

Part Number: RS999042

Summary: The Rancho RS9000XL series provides the ultimate in ride control for heavy-duty Ford Super Duty trucks. Featuring a 9-position manual adjustment knob, these shocks allow drivers to instantly tune their damping profile to accommodate varying payloads or towing requirements. This Tier 2 adjustable system solves the common struggle of choosing between a stiff commercial ride and a comfortable daily commute by offering a wide range of performance levels in a single unit. Engineered for 0″ lift heights, they serve as a premium performance upgrade for stock-height F-450 and F-550 workhorses.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping force to ensure the perfect balance between comfort and control for towing or empty hauling.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operation and consistent performance under heavy loads.
• Nitrogen Gas Charged: High-pressure gas optimization provides a reduction in aeration and foaming to ensure immediate response during rapid cycling.
• Liquid Metallic Finish: A premium zinc-plated finish provides superior corrosion resistance to ensure long-term durability in harsh environments.

Technical Specifications

Fitment

• 2008-2016 Ford F-450 Super Duty
• 2008-2016 Ford F-550 Super Duty
• Note: Designed for vehicles at factory ride height (0″ lift).

What’s Included

• Includes Full Set (See Below)
• (2) RS999042 Front Shocks
• (2) RS999273 Rear Shocks
• Protective Red Dust Boots

Why Choose This Product?

• Engineering Advantage: The RS9000XL is the industry’s first 9-position manually adjustable shock, utilizing a sophisticated tri-tube design that separates the valving from the outer shell for maximum durability.
• Performance Benefit: Drivers can switch from a soft, highway-friendly ride to a firm, heavy-duty setting for maximum stability while towing 5th-wheel trailers or carrying heavy service beds.

Related Products

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for 2008-2016 Ford F-450

RS5000X (Rear):
Rancho RS5000X 0" Rear Lift Shocks for 2008-2016 Ford F-450

RS7MT (Front):
Rancho RS7MT 0" Front Lift Shocks for 2008-2016 Ford F-450

RS7MT (Rear):
Rancho RS7MT 0" Rear Lift Shocks for 2008-2016 Ford F-450

RS90000XL (Rear):
Rancho RS90000XL 0" Rear Lift Shocks for 2008-2016 Ford F-450

RS90000XL (Front):
Rancho RS90000XL 0" Front Lift Shocks for 2008-2016 Ford F-450

RS5000X (Kit):
Rancho RS5000X 0" Lift Shocks for 2008-2016 Ford F-450

RS7MT (Kit):
Rancho RS7MT 0" Lift Shocks for 2008-2016 Ford F-450

Frequently Asked Questions

How do I adjust the firmness of these shocks?
Each shock features an external 9-position knob at the base. Turning the knob clockwise increases firmness for towing, while counter-clockwise softens the ride for street comfort.

Do these shocks provide any lift to my Ford F-450?
No, these shocks are configured for 0″ of lift and are designed to replace the factory-length shocks on stock-height vehicles.

Will these shocks help with body roll when my truck is loaded?
Yes, by increasing the damping to a higher setting (typically 7-9), the shocks provide more resistance to body roll and sway, ensuring a more stable towing experience.