Rancho RS5000X 1.5″ Rear Lift Shocks for 1973-1990 GMC G-2500

Description
Rancho RS5000X 1.5″ Rear Lift Shocks for 1973-1990 GMC G-2500

Rancho RS5000X 1.5″ Rear Lift Shocks for 1973-1990 GMC G-2500

Part Number: RS55118

Summary: The Rancho RS5000X series features a patented progressive engagement valving system designed to improve on-road comfort and off-road control. Engineered for the GMC G-2500, these twin-tube gas-pressurized shocks provide a significant upgrade over factory units by reducing aeration and shock fade. This specific pair is configured for vehicles with a 1.5-inch rear lift, ensuring the piston remains within its optimal operating range for maximum durability and ride quality.

Features

• Progressive Engagement Valving: Custom-tuned compression and rebound circuits provide a smooth ride during normal driving while increasing firmness during impacts to ensure consistent vehicle control.
• Twin-Tube Gas Pressure: A 150-PSI nitrogen gas charge provides a quicker response and reduces foam buildup to ensure fade-free performance in demanding environments.
• Large Shock Body: The 2.25-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy hauling or towing.
• Protective Boot: A heavy-duty red polyvinyl bellows provides a physical barrier for the piston rod to ensure the oil seal remains free from debris and contaminants.

Technical Specifications

Fitment

• 1973-1990 GMC G-2500
• Note: Configured for 1.5″ Rear Lift Height.

What’s Included

• Includes 2 Shocks (Pair)
• Polyvinyl Protective Boots
• Required Installation Bushings

Why Choose This Product?

• Engineering Advantage: Rancho’s Cross-Tuned technology optimizes the relationship between the internal valving and the nitrogen gas charge for a precise balance of comfort and capability.
• Performance Benefit: Improved dent resistance from the twin-tube design ensures that even if the outer body is damaged, the internal piston continues to function reliably.

Related Products

Front Only (Same Series):
Rancho RS5000X 1.5" Front Lift Shocks for 1973-1990 GMC G-2500

RS7MT (Rear):
Rancho RS7MT 1.5" Rear Lift Shocks for 1973-1990 GMC G-2500

RS90000XL (Rear):
Rancho RS90000XL 1.5" Rear Lift Shocks for 1973-1990 GMC G-2500

RS90000XL (Front):
Rancho RS90000XL 1.5" Front Lift Shocks for 1973-1990 GMC G-2500

RS5000X (Kit):
Rancho RS5000X 1.5" Lift Shocks for 1973-1990 GMC G-2500

RS90000XL (Kit):
Rancho RS90000XL 1.5" Lift Shocks for 1973-1990 GMC G-2500

Frequently Asked Questions

Will these shocks lift my vehicle?
No, these shocks do not create lift. They are specifically lengthened to accommodate a vehicle that has already been equipped with 1.5 inches of rear lift components.

Is the protective boot required for installation?
While the shock will function without it, the included boot is highly recommended to protect the chrome piston rod from pitting and premature seal failure.

What is the benefit of the RS5000X gas charge?
The 150-PSI nitrogen charge minimizes the mixing of oil and air (aeration), which prevents the shock from losing damping force during rapid cycles or heavy use.