Rancho RS5000X 0″ Rear Lift Shocks for — US Postal FJ-9 2WD

Description
Rancho RS5000X 0″ Rear Lift Shocks for — US Postal FJ-9 2WD

Rancho RS5000X 0″ Rear Lift Shocks for US Postal FJ-9 2WD

Part Number: RS55113

Summary: The Rancho RS5000X series redefines entry-level performance by utilizing a sophisticated twin-tube gas pressurized design specifically tuned for the US Postal FJ-9. Engineered for durability and consistent street comfort, these shocks feature a unique cross-tuned valve system that balances low-speed stability with high-speed impact absorption. Whether navigating delivery routes or maintaining a fleet vehicle, these shocks provide a significant upgrade over stock units by reducing body roll and improving tire-to-road contact.

Features

• Cross-Tuned Technology: A specialized valve system provides a progressive damping curve to ensure smooth ride quality during daily operation.
• Gas Pressurized Twin-Tube: Nitrogen gas charge provides reduced aeration and foaming to ensure consistent damping performance under load.
• Protective Boot: A heavy-duty red polyvinyl accordion boot provides a physical barrier for the piston rod to ensure long-term seal integrity.
• OE-Style Mounts: Precision-engineered mounting hardware provides a direct-fit installation to ensure a secure connection to the chassis.

Technical Specifications

Fitment

• US Postal FJ-9 2WD
• Note: Fits AM General Model FJ-9

What’s Included

• Includes 2 Shocks
• Protective Red Dust Boots
• Required Bushings and Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s twin-tube design is engineered with a larger 2.25-inch body to increase oil capacity, allowing the shock to run cooler and last longer than standard replacement units.
• Performance Benefit: Drivers will experience a “firm but fair” ride that eliminates the “floaty” feeling associated with aged or inferior dampers.

Related Products

Front Only (Same Series):
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

RS90000XL (Front):
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

Will these shocks lift my vehicle?
No, these shocks are configured for a 0-inch lift and are designed to replace factory-length dampers without changing the vehicle’s ride height.

What is the benefit of the RS5000X twin-tube design?
The twin-tube design is highly durable; even if the outer tube is dented by road debris, the inner working tube remains unaffected, ensuring you aren’t left stranded.

Are these shocks sold as a pair or individually?
Based on the SKU configuration, this package includes 2 shocks for the rear of the vehicle.