Rancho RS90000XL 4″ Rear Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel

Description
Rancho RS90000XL 4″ Rear Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel

Rancho RS90000XL 4″ Rear Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel

Part Number: RS999045

Summary: The Rancho RS9000XL series delivers industry-leading versatility for the Ford F-350 Super Duty through its signature 9-position manual tuning system. By allowing drivers to adjust damping levels at the turn of a dial, these shocks solve the common conflict between unloaded street comfort and heavy-duty towing stability. Configured for a 4-inch rear lift, this heavy-bore shock provides the massive fluid capacity required to maintain consistent performance under the high-stress demands of a 1-ton truck.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping to ensure the perfect ride quality for highway cruising, off-roading, or heavy towing.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased oil capacity to ensure lower operating temperatures and reduced fade during extreme use.
• Nitrogen Gas Pressurization: High-pressure gas charging provides a barrier between the oil and gas to ensure consistent valving performance and reduced aeration.
• 18mm Nitro-Carburized Rod: A heavy-duty hardened piston rod provides superior structural integrity and corrosion resistance to ensure long-term seal life.

Technical Specifications

Fitment

• 2005-2010 Ford F-350 4WD
• Note: Fits models with Single Rear Wheels (SRW) only. Excluding Chassis Cab models.

What’s Included

• Includes 2 Shocks
• Protective Red Dust Boots

Why Choose This Product?

• Engineering Advantage: Unlike static-valved shocks, the RS9000XL’s tri-tube design and adjustable dial allow for a customized damping curve that adapts to changing vehicle loads.
• Performance Benefit: Drivers gain total control over their suspension feel, eliminating the “stiff” ride typical of heavy-duty shocks when the truck bed is empty.

Related Products

RS5000X (Rear):
Rancho RS5000X 4" Rear Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel
Rancho RS5000X 4" Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel

RS5000X Full Kit:
Rancho RS5000X 4" Front Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel

RS7MT Full Kit:
Rancho RS7MT 4" Front Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel

Full Kit (Same Series):
Rancho RS90000XL 4" Front Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel

RS90000XL (Rear) – Alternative:
Rancho RS90000XL 4" Lift Shocks for 2005-2010 Ford F-350 4WD Single Rear Wheel

Frequently Asked Questions

Do these shocks create a 4-inch lift?
No, these shocks are specifically configured for vehicles that already have 4 inches of rear lift height to ensure the piston operates within the correct travel range.

How do I adjust the damping settings?
The shocks feature an external 9-position knob located at the base of the shock body, allowing for manual tuning without tools or removal.

Will these fit a Dually (DRW) model?
No, these are specifically designed for Single Rear Wheel (SRW) configurations and are not compatible with Chassis Cab or Dually models.