Rancho Shock Absorber (MPN: RS77381)

Precision-engineered monotube shock for enhanced on-road and off-road performance.

The Rancho Shock Absorber is designed to provide superior handling and performance for both on-road and off-road applications. Featuring a nitrogen gas charged monotube design, this shock absorber effectively dissipates heat, making it suitable for extreme conditions and larger wheel and tire setups. The integrated dirt wiper sealing system ensures that dirt and debris are kept out, prolonging the life of the shock and maintaining optimal performance.

Constructed with a 14 millimeter hardened chrome piston rod, the Rancho Shock Absorber resists scuffs and corrosion, while the double-welded loops at stress areas enhance durability. The internal rebound bumper and shouldered rubber bushings work together to minimize noise, vibration, and ride harshness, providing a smoother driving experience. With application-specific mounting, this shock absorber installs easily without the need for additional hardware.

The large 2-inch monotube body filled with all-weather fluid allows for cooler operation and improved vehicle control, even in extreme temperature changes. The full-floating dividing piston and high-pressure nitrogen gas maintain constant pressure against the hydraulic oil, effectively reducing aeration and shock fade. With a bold black satin finish and distinctive Rancho red logo, this shock absorber not only performs well but also adds an eye-catching look to your vehicle.

Features

• Precise Handling And Performance: Deflective Disc Valving Features Digressive, Linear Or Progressive Tuning Based On Application Requirements For Precision Handling And Performance On- And Off-Road
• Smooth Performance: Internal Rebound Bumper And Shouldered Rubber Bushings Help Reduce Noise, Vibration And Ride Harshness
• Strong And Durable: Features A 14 Millimeter Hardened Chrome Piston Rod To Resist Scuffs And Corrosion, Double-Welded Loops At Stress Areas, Double Strength Closure Method And Hot Form Reserve Tube
• Right Fit: Designed To Fit Right Out Of The Box, Application-Specific Mounting Installs Easily With No Need For Installing Sleeves Or Extra Hardware
• Handles Extreme Temperature Changes: Large 2-Inch Monotube Body Filled With All-Weather Fluid Allows For Cooler Operation, Increased Vehicle Control And Ability To Withstand Internal Temperatures
• Keeps Dirt And Debris Out: Sealing System With Integrated Dirt Wiper Helps Keep Moisture, Dirt And Debris From Being Ingested Into The Shock And Contaminating The Oil And Destroying The Internal Seal
• Reduces Fade: Full-Floating Dividing Piston And High-Pressure Nitrogen Gas Maintains Constant Pressure Against The Hydraulic Oil, Reducing Aeration And Shock Fade
• Built To Last: Large 46 Millimeter Fluon-Banded Piston For Consistent Sealing Between The Piston And Monotube For Precise Control, Ride And Handling
• Bold Appearance: Black Satin Finish With Distinctive Rancho Red Logo For An Eye-Catching Look That Stands Out

Specifications

• Manufacturer: Rancho
• Manufacturer Part Number: RS77381
• Type: Nitrogen Gas Charged
• With Coil Spring: No
• Extended Length (IN): 29.17 Inch
• Compressed Length (IN): 18.74 Inch
• Upper Mounting Style: Eyelet
• Lower Mounting Style: Eyelet
• Adjustable Valving: No
• Quantity: Single
• Universality: Semi-Universal
• Internal Design: Monotube
• Body Color: Black
• Rod Diameter (IN): 9/16 Inch
• Valving Type: Digressive Disc Valving
• Ride Height Adjustable: No
• Body Material: Steel
• With Reservoir: No
• Includes Dust Shield: No
• Includes Hardware: No
• Includes Boot: No
• Estimated Install Time (Hours): 0.5

Compatibility / Fit

• 2011-2023 Chevrolet Silverado 2500 HD
• 2011-2023 Chevrolet Silverado 3500 HD
• 2011-2015 GMC Sierra 2500 HD
• 2020-2023 GMC Sierra 2500 HD
• 2011-2015 GMC Sierra 3500 HD
• 2020-2023 GMC Sierra 3500 HD

Technical Documents

• FORM01210T.pdf