Rancho RS5000X 2.5-4″ Rear Lift Shocks for 1981-1991 Chevy Blazer 4WD

Rancho RS5000X 2.5-4″ Rear Lift Shocks for 1981-1991 Chevy Blazer 4WD

Part Number: RS55112

Summary: The Rancho RS5000X series utilizes a cross-tuned twin-tube design to deliver improved ride quality and rugged durability for lifted applications. Engineered with a large 2.25-inch body, these gas-pressurized shocks provide increased fluid capacity to maintain cooler operating temperatures during off-road use. This specific configuration is optimized for vehicles with 2.5 to 4 inches of rear lift, ensuring the suspension maintains proper travel and damping control on both pavement and trails.

Features

• Progressive Engagement Valving: Custom-tuned compression and rebound circuits provide a smooth transition between low and high-speed impacts to ensure consistent driver comfort.
• Gas Pressurization: High-pressure nitrogen gas charge provides a reduction in aeration and foaming to ensure fade-free performance in demanding environments.
• 2.25-inch Twin-Tube Body: The increased outer diameter provides a larger oil reservoir to ensure lower internal temperatures and improved dent resistance.
• 16mm Nitro-Carburized Rod: A heavy-duty piston rod construction provides superior scuff resistance and protection against corrosion to ensure long-term seal integrity.

Technical Specifications

Fitment

• 1981-1991 Chevy Blazer 4WD
• Note: Configured for 2.5-4″ of rear lift height.

What’s Included

• Includes 2 Shocks
• Protective Black Shock Boots
• Required Mounting Hardware and Bushings

Why Choose This Product?

• Engineering Advantage: Rancho’s patented Cross-Tuned technology balances the internal valving to compensate for the higher center of gravity found in lifted SUVs.
• Performance Benefit: The twin-tube architecture offers a “fail-safe” design where the outer tube can take a hit from a rock or debris without affecting the internal piston movement.

Related Products

Front Only (Same Series):
Rancho RS5000X 2.5-4" Front Lift Shocks for 1981-1991 Chevy Blazer 4WD

RS7MT (Rear):
Rancho RS7MT 2.5-4" Rear Lift Shocks for 1981-1991 Chevy Blazer 4WD

RS90000XL (Front):
Rancho RS90000XL 2.5-4" Front Lift Shocks for 1981-1991 Chevy Blazer 4WD

RS90000XL (Rear):
Rancho RS90000XL 2.5-4" Rear Lift Shocks for 1981-1991 Chevy Blazer 4WD

RS5000X (Kit):
Rancho RS5000X 2.5-4" Lift Shocks for 1981-1991 Chevy Blazer 4WD

RS90000XL (Kit):
Rancho RS90000XL 2.5-4" Lift Shocks for 1981-1991 Chevy Blazer 4WD

Frequently Asked Questions

Will these shocks lift my Chevy Blazer?
No, these shocks do not create lift. They are specifically valved and sized to accommodate a Blazer that has already been equipped with 2.5 to 4 inches of rear lift components.

Are the shock boots included in the box?
Yes, these RS5000X shocks include Rancho’s signature black protective boots to shield the piston rod from dirt and debris.

How does the RS5000X differ from the original RS5000?
The RS5000X features a larger body and a unique internal “Cross-Tuned” valving system that provides a significant upgrade in handling and heat dissipation over the legacy design.