Rancho RS5000X 2.5-4″ Rear Lift Shocks for 1977-1986 GMC K3500 4WD

Description
Rancho RS5000X 2.5-4″ Rear Lift Shocks for 1977-1986 GMC K3500 4WD

Rancho RS5000X 2.5-4″ Rear Lift Shocks for 1977-1986 GMC K3500 4WD

Part Number: RS55134

Summary: The Rancho RS5000X series is engineered to provide a significant upgrade in ride quality and durability for your GMC K3500. Featuring a cross-tuned twin-tube design, these gas-pressurized shocks are specifically configured for vehicles with 2.5 to 4 inches of rear lift. By utilizing a unique valving system that minimizes aeration, these shocks deliver consistent damping performance and smooth street comfort whether you are on the highway or navigating work sites.

Features

• Progressive Engagement Valving: Custom-tuned compression and rebound circuits provide a smooth transition between damping forces to ensure improved vehicle stability and control.
• 16mm Nitro-Carburized Rod: The heavy-duty hardened piston rod provides increased structural rigidity and corrosion resistance to ensure a long service life in harsh environments.
• Gas Pressurization: High-pressure nitrogen gas charge provides a reduction in oil foaming and aeration to ensure consistent performance during rapid cycling.
• Protective Boot: Included polyvinyl accordion boot provides a physical barrier for the oil seal and piston rod to ensure protection against road debris and contaminants.

Technical Specifications

Fitment

• 1977-1986 GMC K3500 4WD
• Note: Configured for vehicles with 2.5″ to 4″ of rear lift.

What’s Included

• Includes 2 Shocks
• Polyvinyl Protective Boots
• Mounting Bushings and Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s patented Cross-Tuned technology optimizes the twin-tube architecture for a balance of off-road durability and daily-driver comfort.
• Performance Benefit: The increased fluid capacity and gas charge result in a shock that runs cooler and responds faster to road imperfections than standard factory replacements.

Related Products

Front Only (Same Series):
Rancho RS5000X 2.5-4" Front Lift Shocks for 1977-1986 GMC K3500 4WD

RS90000XL (Front):
Rancho RS90000XL 2.5-4" Front Lift Shocks for 1977-1986 GMC K3500 4WD

RS5000X (Kit):
Rancho RS5000X 2.5-4" Lift Shocks for 1977-1986 GMC K3500 4WD

Frequently Asked Questions

Will these shocks lift my GMC K3500?
No, these shocks do not create lift. They are specifically sized and valved to be installed on vehicles that have already been modified with a 2.5-inch to 4-inch rear lift kit.

What is the benefit of the twin-tube design?
The twin-tube design is highly durable for trucks; the outer tube can take a dent from a rock or debris without affecting the inner pressure tube, ensuring you aren’t stranded on the trail.

Are these shocks sold as a pair?
Yes, this specific SKU (2xRS55134) includes 2 rear shocks to cover both the driver and passenger sides of your vehicle.