Rancho RS90000XL 4″ Lift Shocks for 1999-2004 Ford F-350 4WD

Description
Rancho RS90000XL 4″ Lift Shocks for 1999-2004 Ford F-350 4WD

Rancho RS9000XL 4″ Lift Shocks for 1999-2004 Ford F-350 4WD

Part Number: RS999264

Summary: The Rancho RS9000XL series provides industry-leading versatility for the Ford F-350, featuring a globally recognized 9-position manual adjustment knob. This system allows drivers to instantly transition from a soft street ride to a firm setting for heavy towing or off-road stability. Engineered for vehicles with a 4-inch lift, these large-body shocks offer increased fluid capacity to maintain consistent damping under heavy-duty workloads.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping to ensure the vehicle is perfectly calibrated for towing, hauling, or daily commuting.
• Large Shock Body: A 2.75-in. diameter reserve tube provides increased oil capacity to ensure cooler operating temperatures during heavy-duty use.
• Nitrogen Gas Charged: High-pressure gas optimization provides a reduction in aeration and foaming to ensure consistent valving performance in extreme conditions.
• Protective Boot: A heavy-duty liquid metallic finish and included shock boot provide a barrier against debris and corrosion to ensure long-term structural integrity.

Technical Specifications

Fitment

• 1999-2004 Ford F-350 4WD
• Note: Designed for use with Rancho Suspension systems.

What’s Included

• Includes Full Set (See Below)
• (2) RS999264 Front Shocks
• (2) RS999261 Rear Shocks
• Protective Polyvinyl Accordion Boots

Why Choose This Product?

• Engineering Advantage: Unlike standard shocks, the RS9000XL uses a specialized tri-tube design and a 9-way bypass system that allows for manual override of the damping profile without removing the hardware.
• Performance Benefit: Drivers gain total control over their suspension stiffness, eliminating the “one size fits all” compromise typically found in aftermarket heavy-duty shocks.

Related Products

RS5000X (Front):
Rancho RS5000X 4" Front Lift Shocks for 1999-2004 Ford F-350 4WD

RS5000X (Rear):
Rancho RS5000X 4" Rear Lift Shocks for 1999-2004 Ford F-350 4WD

RS90000XL (Rear):
Rancho RS90000XL 4" Rear Lift Shocks for 1999-2004 Ford F-350 4WD

RS7MT (Front):
Rancho RS7MT 4" Front Lift Shocks for 1999-2004 Ford F-350 4WD

RS90000XL (Front):
Rancho RS90000XL 4" Front Lift Shocks for 1999-2004 Ford F-350 4WD

RS5000X (Kit):
Rancho RS5000X 4" Lift Shocks for 1999-2004 Ford F-350 4WD

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features a 9-position knob located at the base of the shock body; simply turn the dial to increase or decrease damping resistance.

Will these shocks lift my Ford F-350?
No, these shocks do not create lift. They are specifically valved and length-configured for vehicles already equipped with a 4-inch suspension lift.

What is the benefit of the large 2.75-inch body?
The larger diameter allows for more oil capacity, which helps dissipate heat more efficiently than smaller standard shocks, preventing “shock fade” during heavy towing.