Rancho RS7MT 4″ Rear Lift Shocks for 2011-2018 GMC Sierra 3500HD

Description
Rancho RS7MT 4″ Rear Lift Shocks for 2011-2018 GMC Sierra 3500HD

Rancho RS7MT 4″ Rear Lift Shocks for 2011-2018 GMC Sierra 3500HD

Part Number: RS77381

Summary: The Rancho RS7MT series is engineered for high-performance handling and rapid heat dissipation on heavy-duty applications. Utilizing a sophisticated monotube design with a dedicated internal floating piston, these shocks provide precise damping control for your GMC Sierra 3500HD. Configured specifically for 4-inch rear lift heights, they resolve the common issue of suspension over-extension while maintaining a firm, responsive ride during both highway towing and off-road excursions.

Features

• Monotube Construction: A high-pressure nitrogen gas-charged 2-inch body provides rapid response times to road inputs to ensure consistent tire contact.
• Internal Floating Piston (IFP): The physical separation of gas and oil provides aeration-free performance to ensure fade-free damping during extreme cycle rates.
• 14mm Hardened Chrome Rod: A nitro-carburized piston rod provides superior scuff and corrosion resistance to ensure long-term seal integrity.
• Application-Specific Tuning: Custom valving provides optimized compression and rebound forces to ensure stable handling for heavy-duty truck platforms.

Technical Specifications

Fitment

• 2011-2018 GMC Sierra 3500HD
• Note: Fits models equipped with 4-inch rear lift kits.

What’s Included

• Includes 2 Shocks
• Protective Dust Boots
• Installation Hardware

Why Choose This Product?

• Engineering Advantage: The RS7MT’s monotube architecture offers superior cooling surface area compared to traditional twin-tube shocks, preventing performance drop-off under load.
• Performance Benefit: Drivers will experience a significant reduction in body roll and “pogo” effects, resulting in a more planted and confident towing experience.

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

Front Only (Same Series):
Rancho RS7MT 4" Front 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

RS5000X (Kit):
Rancho RS5000X 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 configured with the correct extended and compressed lengths to accommodate a vehicle already equipped with a 4-inch rear lift kit.

What is the benefit of the Monotube design?
The monotube design allows for a larger piston and higher oil capacity, which provides quicker reaction to small bumps and faster heat dissipation compared to standard shocks.

Are these shocks sold as a pair?
Yes, this specific SKU (2xRS77381_n641) includes two rear shocks for a complete axle installation.