Rancho RS5000X 0″ Lift Shocks for — US Postal FJ-8A 2WD

Description
Rancho RS5000X 0″ Lift Shocks for — US Postal FJ-8A 2WD

Rancho RS5000X 0″ Lift Shocks for US Postal FJ-8A 2WD

Part Number: RS55119

Summary: The Rancho RS5000X series utilizes an innovative CrossTune Technology to provide a significant upgrade over factory damping for the US Postal FJ-8A. Engineered for durability and consistent performance, these twin-tube shocks feature a larger 2.25-inch body to increase fluid capacity and reduce internal heat. Whether navigating delivery routes or maintaining a fleet, these shocks provide the rugged dent-resistance and smooth street comfort required for heavy-duty service cycles.

Features

• CrossTune Technology: A unique progressive engagement valving system provides a custom-tuned ride to ensure comfort across varying road surfaces.
• Twin-Tube Gas Pressure Design: The 2.25-inch diameter outer tube provides increased oil capacity to ensure cooler operating temperatures and fade resistance.
• Nitro-Carburized Piston Rod: A heavy-duty 16mm rod construction provides superior scuff and corrosion resistance to ensure long-term seal integrity.
• Protective Boot: Included polyvinyl accordion boot provides a physical barrier for the rod and seal to ensure protection against road debris and contaminants.

Technical Specifications

Fitment

• AM General FJ-8A 2WD
• Note: Specifically configured for AM General Model FJ-8A US Postal vehicles.

What’s Included

• Includes 4 Shocks
• Protective Dust Boots
• Mounting Hardware/Bushings

Why Choose This Product?

• Engineering Advantage: Rancho’s CrossTune Technology uses a specific base valve and piston valve calibration to manage impact energy more effectively than standard OE shocks.
• Performance Benefit: The increased fluid volume of the RS5000X body allows for more consistent damping during extended driving periods, reducing driver fatigue.

Related Products

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for — US Postal FJ-8A 2WD

RS7MT (Front):
Rancho RS7MT 0" Front Lift Shocks for — US Postal FJ-8A 2WD

RS90000XL (Front):
Rancho RS90000XL 0" Front Lift Shocks for — US Postal FJ-8A 2WD

RS7MT (Kit):
Rancho RS7MT 0" Lift Shocks for — US Postal FJ-8A 2WD

RS90000XL (Kit):
Rancho RS90000XL 0" Lift Shocks for — US Postal FJ-8A 2WD

Frequently Asked Questions

Will these shocks lift my US Postal FJ-8A?
No, these shocks are configured for 0″ of lift and are designed to replace factory-length dampers at stock ride height.

What is the benefit of the twin-tube design?
The twin-tube design is exceptionally durable; if the outer tube is dented by road debris, the inner cylinder remains functional, allowing the shock to continue operating.

Are the boots included with these shocks?
Yes, this set includes red polyvinyl boots to protect the piston rods from dirt and grime.