Rancho RS5000X 1-2.5″ Rear Lift Shocks for 1988-2000 GMC K2500 4WD

Description
Rancho RS5000X 1-2.5″ Rear Lift Shocks for 1988-2000 GMC K2500 4WD

Rancho RS5000X 1-2.5″ Rear Lift Shocks for 1988-2000 GMC K2500 4WD

Part Number: RS55190

Summary: The Rancho RS5000X series utilizes an innovative CrossTune Technology valve system to provide a significant upgrade over factory damping for your GMC K2500. Designed specifically for vehicles with 1 to 2.5 inches of rear lift, these gas-pressurized twin-tube shocks excel at absorbing harsh road impacts while maintaining firm control during off-road excursions. This balance makes them an ideal solution for K-Series owners seeking a durable, “set-it-and-forget-it” shock that delivers smooth street comfort without sacrificing heavy-duty performance.

Features

• CrossTune Technology: A unique base valve system provides a progressive engagement throughout the piston stroke to ensure consistent damping across varied terrain.
• Twin-Tube Gas Pressure: A low-pressure Nitrogen gas charge provides a reduction in oil foaming and aeration to ensure fade-free performance during extended use.
• 10.28-inch Stroke: The extended travel architecture provides increased articulation capacity to ensure the tires maintain contact on uneven surfaces.
• Protective Boot: A heavy-duty red polyvinyl accordion boot provides a physical barrier for the shock rod to ensure seal longevity against debris and rock chips.

Technical Specifications

Fitment

• 1988-2000 GMC K2500 4WD
• 1992-1999 GMC Yukon 4WD
• Note: Fits 4-Door models equipped with Rancho Suspension systems. Configured for 1-2.5″ of rear lift.

What’s Included

• Includes 2 Shocks
• Protective Dust Boots
• Required Mounting Bushings

Why Choose This Product?

• Engineering Advantage: Rancho’s larger 2.25-inch shock body increases fluid capacity, allowing the shock to run cooler than standard 2-inch replacement units.
• Performance Benefit: The valving is specifically tuned to the weight and leaf-spring rate of the GMC K-Series chassis, eliminating the “bounce” often associated with lifted trucks.

Related Products

Front Only (Same Series):
Rancho RS5000X 1-2.5" Front Lift Shocks for 1988-2000 GMC K2500 4WD

RS7MT (Front):
Rancho RS7MT 1-2.5" Front Lift Shocks for 1988-2000 GMC K2500 4WD

RS90000XL (Rear):
Rancho RS90000XL 1-2.5" Rear Lift Shocks for 1988-2000 GMC K2500 4WD

RS90000XL (Front):
Rancho RS90000XL 1-2.5" Front Lift Shocks for 1988-2000 GMC K2500 4WD

RS5000X (Kit):
Rancho RS5000X 1-2.5" Lift Shocks for 1988-2000 GMC K2500 4WD

RS90000XL (Kit):
Rancho RS90000XL 1-2.5" Lift Shocks for 1988-2000 GMC K2500 4WD

Frequently Asked Questions

Will these shocks lift my GMC K2500?
No, these shocks do not create lift. They are specifically valved and length-tuned for vehicles that already have 1 to 2.5 inches of rear lift installed.

What is the benefit of the RS5000X gas pressurization?
The low-pressure nitrogen gas charge minimizes the mixing of oil and air (foaming), which ensures the shock maintains consistent damping force even on washboard roads.

Are these sold as a pair or individually?
This specific SKU (2xRS55190) includes 2 shocks, enough for the rear axle of your vehicle.