Rancho RS5000X 0-2″ Lift Shocks for 1977-1986 GMC K3500 4WD

Description
Rancho RS5000X 0-2″ Lift Shocks for 1977-1986 GMC K3500 4WD

Rancho RS5000X 0-2″ Lift Shocks for 1977-1986 GMC K3500 4WD

Part Number: RS55151

Summary: The Rancho RS5000X series utilizes an innovative cross-tuned twin-tube design to provide a significant upgrade over factory damping for your GMC K3500. By incorporating a unique progressive engagement valving system, these shocks effectively manage the harshness typically associated with heavy-duty 4WD applications. These units are specifically configured for vehicles with 0-2 inches of lift, ensuring the piston remains in the optimal stroke zone for both daily commuting and rugged off-road utility.

Features

• Progressive Engagement Valving: A custom-tuned shim stack provides increased control during high-velocity impacts to ensure a smooth, consistent ride across varying terrain.
• Enlarged 2.25-inch Body: The increased fluid capacity provides better heat dissipation to ensure fade-free performance during heavy hauling or prolonged trail use.
• Nitro-Carburized Piston Rod: A hardened 16mm diameter rod provides superior scuff resistance and corrosion protection to ensure a long service life in harsh environments.
• Gas Pressurization: Low-pressure nitrogen charging provides a reduction in oil foaming and aeration to ensure immediate damping response and stability.

Technical Specifications

Fitment

• 1977-1986 GMC K3500 4WD
• 1977-1986 GMC Suburban 1500 4WD
• Note: Excluding O.E. Quad Suspension

What’s Included

• Includes 4 Shocks (Full Set)
• Protective Red Dust Boots
• Required Installation Bushings and Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s patented Cross-Tuned technology optimizes the transition between low and high-speed damping, specifically calibrated for the leaf-spring geometry of classic GMC 4WD trucks.
• Performance Benefit: Drivers will experience a significant reduction in “wheel hop” and body roll, resulting in a more planted feel on the highway and more predictable articulation on the trail.

Related Products

RS5000X (Rear):
Rancho RS5000X 0-2" Rear Lift Shocks for 1977-1986 GMC K3500 4WD

RS5000X (Front):
Rancho RS5000X 0-2" Front Lift Shocks for 1977-1986 GMC K3500 4WD

RS90000XL (Front):
Rancho RS90000XL 0-2" Front Lift Shocks for 1977-1986 GMC K3500 4WD

Frequently Asked Questions

Will these shocks lift my GMC K3500?
No, these shocks do not provide lift. They are specifically valved and extended to accommodate vehicles already equipped with 0-2 inches of suspension lift.

Are these shocks compatible with the factory quad-shock option?
No, these are designed for standard suspension configurations and exclude models originally equipped with the O.E. Quad Suspension setup.

Do these come with the boots shown in the images?
Yes, all RS5000X shocks include Rancho’s signature red protective boots to shield the piston rod from debris and contaminants.