Rancho RS5000X 1.5″ Lift Shocks for 1987-1989 GMC R2500 2WD

Description
Rancho RS5000X 1.5″ Lift Shocks for 1987-1989 GMC R2500 2WD

Rancho RS5000X 1.5″ Lift Shocks for 1987-1989 GMC R2500 2WD

Part Number: RS55120

Summary: The Rancho RS5000X series leverages advanced CrossSet Tuning technology to provide a significant upgrade over factory damping for your GMC R2500. Designed specifically for vehicles configured with a 1.5-inch lift, these shocks utilize a gas-pressurized twin-tube design to balance rugged off-road durability with smooth street comfort. By minimizing fluid aeration and shock fade, this set ensures consistent handling and control across varied terrain and load conditions.

Features

• CrossSet Tuning Technology: A unique valve design provides custom-tuned damping to ensure superior control and stability during both on-road and off-road maneuvers.
• Twin-Tube Gas Pressure: The 150 PSI nitrogen gas charge provides reduced aeration and foaming to ensure consistent performance under high-stress cycling.
• Velocity Sensitive Valving: Application-specific valving provides an immediate response to road impacts to ensure a smooth ride on uneven surfaces.
• Protective Boot Included: A high-quality red polyvinyl accordion boot provides a shield for the shock rod to ensure long-term seal integrity against debris and moisture.

Technical Specifications

Fitment

• 1987-1989 GMC R2500 2WD
• 1963-1983 Jeep Wagoneer
• Note: Designed for vehicles with 1.5″ of suspension lift.

What’s Included

• 2 x RS55120 Front Shocks
• 2 x RS55118 Rear Shocks
• All Required Mounting Hardware
• Protective Shock Boots

Why Choose This Product?

• Engineering Advantage: Rancho’s patented Progressive Engagement Valving reduces initial impact harshness while maintaining firm control during aggressive cornering.
• Performance Benefit: The increased fluid capacity of the 2.25-inch body allows for cooler operation, preventing the “vague” steering feel associated with overheated factory shocks.

Related Products

RS5000X (Rear):
Rancho RS5000X 1.5" Rear Lift Shocks for 1987-1989 GMC R2500 2WD

RS5000X (Front):
Rancho RS5000X 1.5" Front Lift Shocks for 1987-1989 GMC R2500 2WD

RS7MT (Rear):
Rancho RS7MT 1.5" Rear Lift Shocks for 1987-1989 GMC R2500 2WD

RS90000XL (Rear):
Rancho RS90000XL 1.5" Rear Lift Shocks for 1987-1989 GMC R2500 2WD

RS90000XL (Front):
Rancho RS90000XL 1.5" Front Lift Shocks for 1987-1989 GMC R2500 2WD

RS90000XL (Kit):
Rancho RS90000XL 1.5" Lift Shocks for 1987-1989 GMC R2500 2WD

Frequently Asked Questions

Will these shocks lift my vehicle?
No, these shocks do not provide lift themselves. They are specifically valved and length-corrected for vehicles already equipped with a 1.5-inch lift kit.

How does the twin-tube design benefit my daily drive?
The twin-tube construction is highly durable; if the outer tube is dented by a rock or debris, the inner working cylinder remains protected, ensuring you aren’t left stranded.

Is the gas charge necessary for a 2WD truck?
Yes, the 150 PSI nitrogen charge is critical for preventing the shock oil from foaming, which maintains predictable braking and handling even on washboard roads.