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

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

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

Part Number: RS77380

Summary: The Rancho RS7MT Monotube Shocks are engineered specifically to handle the demands of a lifted 2011-2018 GMC Sierra 3500HD. Utilizing a high-pressure nitrogen gas charge and a monotube design, these shocks provide the rapid response and precision required for both highway stability and off-road control. Designed to accommodate a 4-inch lift, they eliminate the performance compromises found in standard twin-tube shocks by preventing aeration during aggressive driving. This set ensures your heavy-duty truck maintains a consistent ride quality even under high-load or high-heat conditions.

Features

• Monotube Design: A high-pressure nitrogen gas charge provides rapid heat dissipation and instantaneous damping response to ensure consistent control on uneven terrain.
• Internal Floating Piston: The dedicated oil-to-gas separator provides a physical barrier between the nitrogen and shock fluid to ensure zero aeration and fade-free performance.
• Hardened Nitro-Carburized Rod: The ultra-durable piston rod finish provides superior resistance to scuffs and corrosion to ensure a long service life for the internal seals.
• Vehicle-Specific Valving: Application-tuned damping provides optimized compression and rebound characteristics to ensure the GMC Sierra 3500HD maintains a stable, composed stance.

Technical Specifications

Fitment

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

What’s Included

• Includes Full Set (See Below)
• (2) RS77380 Front Shocks
• (2) RS77381 Rear Shocks
• Installation Hardware & Bushings

Why Choose This Product?

• Engineering Advantage: The RS7MT architecture utilizes a high-pressure nitrogen charge to physically separate gas and oil, a significant upgrade over standard twin-tube designs.
• Performance Benefit: Drivers experience a firmer, more controlled ride with significantly reduced body roll and improved steering feedback under heavy loads.

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

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 valved and sized to function correctly on a vehicle that already has a 4-inch suspension lift installed.

How does the monotube design help with towing?
The monotube design dissipates heat faster than twin-tube shocks, which prevents the oil from foaming (aeration). This ensures your damping force remains consistent even when hauling heavy trailers.

Are these shocks resistant to rust?
Yes, the RS7MT series features a brushed zinc finish with a protective clear coat to help resist corrosion from road salt and debris.