Rancho RS5000X 2.5-4″ Lift Shocks for 1988-1999 GMC K1500 4WD

Description
Rancho RS5000X 2.5-4″ Lift Shocks for 1988-1999 GMC K1500 4WD

Rancho RS5000X 2.5-4″ Lift Shocks for 1988-1999 GMC K1500 4WD

Part Number: RS55001 / RS55190

Summary: The Rancho RS5000X series leverages a cross-tuned twin-tube design to significantly improve ride quality on your GMC K1500. By integrating a patented progressive engagement valving system, these shocks reduce harsh initial impacts while maintaining firm control during aggressive maneuvers. Engineered specifically for vehicles with 2.5 to 4 inches of lift, they provide the necessary extension and damping required to handle larger tire fitments and increased center of gravity without sacrificing daily street comfort.

Features

• Progressive Engagement Valving: A custom-tuned internal shim stack provides increased control during high-velocity piston travel to ensure smooth damping on rough terrain.
• Gas Pressurization: Low-pressure nitrogen gas charge provides a reduction in oil foaming and aeration to ensure consistent performance during extended use.
• Large Shock Body: A 2.25-inch diameter reserve tube provides increased oil capacity to ensure cooler operating temperatures and improved durability.
• Nitro-Carburized Piston Rod: A heavy-duty 16mm rod construction provides superior scuff and corrosion resistance to ensure long-term seal integrity.

Technical Specifications

Fitment

• 1988-1999 GMC K1500 4WD
• 1992-1999 GMC Yukon
• Note: Fits 2 & 4 Door models equipped with Rancho Suspension systems.

What’s Included

• Includes Full Set (See Below)
• (2) RS55001 Front Shock Absorbers
• (2) RS55190 Rear Shock Absorbers
• Protective Red Dust Boots
• Necessary Mounting Bushings and Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s cross-tuned technology optimizes the relationship between the piston and the base valve for a more refined damping curve.
• Performance Benefit: Drivers experience a “best of both worlds” scenario: a supple ride over small road chatter and firm, predictable control over large bumps and off-road obstacles.

Related Products

RS5000X (Front):
Rancho RS5000X 2.5-4" Front Lift Shocks for 1988-1999 GMC K1500 4WD

RS5000X (Rear):
Rancho RS5000X 2.5-4" Rear Lift Shocks for 1988-1999 GMC K1500 4WD

RS90000XL (Rear):
Rancho RS90000XL 2.5-4" Rear Lift Shocks for 1988-1999 GMC K1500 4WD

RS90000XL (Front):
Rancho RS90000XL 2.5-4" Front Lift Shocks for 1988-1999 GMC K1500 4WD

RS90000XL (Kit):
Rancho RS90000XL 2.5-4" Lift Shocks for 1988-1999 GMC K1500 4WD

Frequently Asked Questions

Will these shocks lift my GMC K1500?
No, these shocks do not provide lift. They are specifically lengthened and valved to work with vehicles that have already been modified with a 2.5-inch to 4-inch suspension lift.

What is the benefit of the twin-tube design for my Yukon?
The twin-tube design is highly durable for daily use; the outer tube acts as a shield, allowing the shock to continue functioning even if the outer body is dented by trail debris.

Are the boots required for installation?
While the shocks will function without them, the included red boots are highly recommended to protect the nitro-carburized rods from rock chips and road salt.