Rancho RS90000XL 0″ Rear Lift Shocks for — US Postal FJ-9 2WD

Description
Rancho RS90000XL 0″ Rear Lift Shocks for — US Postal FJ-9 2WD

Rancho RS9000XL 0″ Rear Lift Shocks for US Postal FJ-9 2WD

Part Number: RS999113

Summary: The Rancho RS9000XL series delivers industry-leading versatility for the US Postal FJ-9 through its globally recognized adjustable damping technology. Featuring a 9-position manual tuning knob, these shocks allow operators to instantly transition from a soft, compliant street ride to a firm, controlled setting for heavy cargo loads. Engineered to provide a custom-tuned feel without replacing components, this system solves the compromise between empty-vehicle comfort and loaded-vehicle stability.

Features

• MyRide Tuning System: A 9-position manual adjustment knob provides 400% change in damping force to ensure precise control for varying load requirements.
• Large Diameter Body: The 2.75-inch heavy-duty body provides increased fluid capacity to ensure cooler operating temperatures during high-duty cycles.
• Nitrogen Gas Pressurization: High-pressure gas charge minimizes air-to-oil mixture to provide consistent damping response and eliminate fade.
• Protective Boot: A heavy-duty polyvinyl accordion boot provides a physical barrier for the piston rod to ensure long-term seal integrity against road debris.

Technical Specifications

Fitment

• US Postal FJ-9 2WD
• Note: Specifically designed for AM General Model FJ-9.

What’s Included

• Includes 2 Shocks
• Protective Polyvinyl Boots
• Mounting Hardware (where applicable)

Why Choose This Product?

• Engineering Advantage: Unlike fixed-rate shocks, the RS9000XL uses a tri-tube design and an adjustable bypass valve to give the driver mechanical control over the valving profile.
• Performance Benefit: This adaptability ensures that a vehicle used for mail delivery or heavy utility can maintain safety and stability regardless of the payload weight.

Related Products

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for — US Postal FJ-9 2WD

RS7MT (Front):
Rancho RS7MT 0" Front Lift Shocks for — US Postal FJ-9 2WD

Front Only (Same Series):
Rancho RS90000XL 0" Front Lift Shocks for — US Postal FJ-9 2WD

RS5000X (Kit):
Rancho RS5000X 0" Lift Shocks for — US Postal FJ-9 2WD

RS7MT (Kit):
Rancho RS7MT 0" Lift Shocks for — US Postal FJ-9 2WD

RS90000XL (Kit):
Rancho RS90000XL 0" Lift Shocks for — US Postal FJ-9 2WD

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features a manual knob at the base of the shock body. Simply turn the dial to your preferred setting: 1-3 for a soft ride, 4-6 for daily driving, and 7-9 for heavy hauling.

Do these shocks provide any lift to the vehicle?
No, these shocks are configured for a 0-inch lift and are designed to replace the factory-length units while maintaining stock ride height.

Are these shocks sold as a pair?
Yes, this specific SKU (2xRS999113) includes two rear shocks for a complete axle installation.