Rancho RS5000X 0″ Rear Lift Shocks for 1970-1991 GMC G-3500

Description
Rancho RS5000X 0″ Rear Lift Shocks for 1970-1991 GMC G-3500

Rancho RS5000X 0″ Rear Lift Shocks for 1970-1991 GMC G-3500

Part Number: RS55113

Summary: The Rancho RS5000X series leverages advanced CrossTune Technology to provide a significant upgrade over factory damping for your GMC G-3500. Designed as a high-performance twin-tube gas pressurized shock, it features a unique valving system that minimizes foaming and aeration for consistent performance. This shock is specifically configured for stock height (0″ lift) applications, delivering a smooth, controlled ride that balances highway comfort with rugged durability for work and utility use.

Features

• CrossTune Technology: A progressive engagement valving system provides a custom-tuned ride to ensure optimal control during both low-velocity and high-velocity impacts.
• Twin-Tube Design: A 2.25-inch diameter reserve tube provides increased oil capacity to ensure cooler operating temperatures and better dent resistance in harsh environments.
• Nitro-Carburized Piston Rod: The heavy-duty 16mm rod construction provides superior scuff and corrosion resistance to ensure long-term seal integrity.
• Polyurethane Bushings: High-density mounting material provides enhanced durability and reduced vibration to ensure a quiet and stable connection to the chassis.

Technical Specifications

Fitment

• 1970-1991 GMC G-3500
• 1970-1991 US Postal FJ-9
• Note: Compatible with AM General Model FJ-9 applications.

What’s Included

• Includes 2 Shocks
• Required Mounting Hardware and Bushings
• Protective Red Shock Boots

Why Choose This Product?

• Engineering Advantage: Rancho’s patented CrossTune system allows the shock to transition seamlessly between comfort and control by utilizing a larger internal piston area.
• Performance Benefit: Drivers will experience reduced body roll and improved stability under load, making it an ideal choice for heavy-duty G-series vans and delivery vehicles.

Related Products

Front Only (Same Series):
Rancho RS5000X 0" Front Lift Shocks for 1970-1991 GMC G-3500

RS7MT (Rear):
Rancho RS7MT 0" Rear Lift Shocks for 1970-1991 GMC G-3500

RS90000XL (Rear):
Rancho RS90000XL 0" Rear Lift Shocks for 1970-1991 GMC G-3500

RS90000XL (Front):
Rancho RS90000XL 0" Front Lift Shocks for 1970-1991 GMC G-3500

RS90000XL (Kit):
Rancho RS90000XL 0" Lift Shocks for 1970-1991 GMC G-3500

RS5000X (Kit):
Rancho RS5000X 0" Lift Shocks for 1970-1991 GMC G-3500

Frequently Asked Questions

Will these shocks lift my GMC G-3500?
No, these shocks are configured for 0-inches of lift and are designed to replace factory-length shocks without changing the vehicle’s ride height.

What is the benefit of the Twin-Tube design on this model?
The twin-tube design is highly durable; if the outer tube is dented by road debris, the inner cylinder remains unaffected, allowing the shock to continue functioning properly.

Does this include both rear shocks?
Yes, this specific SKU (2xRS55113) includes a pair of shocks for the rear position.