Rancho RS5000X 4″ Lift Shocks for 2011-2018 GMC Sierra 3500HD

Description
Rancho RS5000X 4″ Lift Shocks for 2011-2018 GMC Sierra 3500HD

Rancho RS5000X 4″ Lift Shocks for 2011-2018 GMC Sierra 3500HD

Part Number: RS55380

Summary: The Rancho RS5000X Series delivers a sophisticated twin-tube gas pressurized design specifically tuned for the heavy-duty demands of the GMC Sierra 3500HD. Engineered to accommodate a 4-inch lift, these shocks utilize CrossTune Technology to provide a consistent, comfortable ride on the street while maintaining the rugged durability required for off-road use. This complete set replaces your factory dampers with a high-capacity solution that resists internal fade and provides superior dent resistance for work or play.

Features

• CrossTune Technology: A unique progressive engagement valving system provides a smooth ride during initial travel to ensure comfort during daily highway driving.
• Twin-Tube Design: A 2.25-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy hauling or towing.
• Gas Pressurization: High-pressure nitrogen gas charge provides a consistent response by minimizing air-to-oil foaming to ensure fade-free performance.
• Nitro-Carburized Piston Rod: A heavy-duty 16mm rod construction provides increased structural rigidity and corrosion resistance to ensure long-term seal integrity.

Technical Specifications

Fitment

• 2011-2018 GMC Sierra 3500HD
• Note: Configured for vehicles equipped with 4-inch suspension lift systems.

What’s Included

• (2) RS55380 Front Shock Absorbers
• (2) RS55381 Rear Shock Absorbers
• Protective Black Shock Boots
• Installation Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s application-specific valving is tuned to the exact weight and geometry of the GMC 3500HD chassis, avoiding the “one size fits all” approach of generic shocks.
• Performance Benefit: Drivers experience a significant reduction in harshness over expansion joints and improved stability when navigating uneven terrain with a lifted center of gravity.

Related Products

RS5000X (Rear):
Rancho RS5000X 4" Rear Lift Shocks for 2011-2018 GMC Sierra 3500HD

RS5000X (Front):
Rancho RS5000X 4" Front Lift Shocks for 2011-2018 GMC Sierra 3500HD

RS90000XL (Rear):
Rancho RS90000XL 4" Rear Lift Shocks for 2011-2018 GMC Sierra 3500HD

RS7MT (Front):
Rancho RS7MT 4" Front Lift Shocks for 2011-2018 GMC Sierra 3500HD

RS7MT (Rear):
Rancho RS7MT 4" Rear Lift Shocks for 2011-2018 GMC Sierra 3500HD

RS90000XL (Front):
Rancho RS90000XL 4" Front Lift Shocks for 2011-2018 GMC Sierra 3500HD

RS90000XL (Kit):
Rancho RS90000XL 4" Lift Shocks for 2011-2018 GMC Sierra 3500HD

RS7MT (Kit):
Rancho RS7MT 4" Lift Shocks for 2011-2018 GMC Sierra 3500HD

Frequently Asked Questions

Will these shocks lift my GMC Sierra 3500HD?
No, these shocks do not create lift. They are specifically valved and length-corrected to work with a vehicle that already has a 4-inch suspension lift installed.

What is the benefit of the twin-tube design for a heavy-duty truck?
The twin-tube design allows for a larger outer body which acts as a reservoir for oil, helping to dissipate heat more effectively and protecting the inner pressure tube from debris or rock dents.

Are the shock boots included in this kit?
Yes, this set includes Rancho’s signature black protective boots to shield the piston rods from salt, dirt, and road grime.