Rancho RS55383 RS5000X Rear 5-6" Lift Shock for 2011-2018 Chevy/GMC HD

Vehicle Fitment

• 2011-2018 Chevrolet & GMC Heavy-Duty Trucks (Rear, 5-6" Lift)
• Confirmed fits include:
• 2011-2018 Chevrolet Silverado 2500HD & 3500HD
• 2011-2018 GMC Sierra 2500HD & 3500HD

Features

• RS5000X Series gas-charged twin-tube rear shock
• Progressive Engagement Valving for smoother damping
• Tuned Compression Control Valve for balanced ride control
• Large twin-tube body with all-weather fluid for heat management
• Nitro-carburized piston rod for corrosion resistance
• Protective red dust boot to guard against debris
• Rubber bushings to reduce noise and vibration
• Direct-fit replacement for lifted rear suspension

Specifications

• Part Number: RS55383
• Series: Rancho RS5000X
• Application: Rear Shock Absorber
• Lift Height: 5-6"
• Compressed Length: ~18.50"
• Extended Length: ~26.75"
• Shock Travel: ~8.25"
• Upper Mount: Eyelet
• Lower Mount: Eyelet
• Design: Gas-charged twin-tube
• Bushing Material: Rubber

Included Components

• 1x Rancho RS55383 RS5000X Rear Shock Absorber
• Protective red dust boot
• Rubber mounting bushings

Product Description

The Rancho RS55383 RS5000X Rear Shock Absorber is engineered for heavy-duty Chevrolet and GMC trucks with a rear suspension lift of approximately 5-6". Part of Rancho's RS5000X performance series, this gas-charged twin-tube shock features Progressive Engagement Valving and a Tuned Compression Control Valve to help absorb impacts, smooth out road irregularities, and deliver balanced control across varied driving conditions. Its robust twin-tube body with all-weather fluid promotes consistent performance and heat management under load.

Built for durability, RS55383 includes a nitro-carburized piston rod for corrosion resistance, a protective dust boot to guard internal components, and rubber bushings to reduce vibration and noise. Designed as a direct-fit shock for rear lifted suspension applications on 2011-2018 Silverado and Sierra HD trucks, this shock offers enhanced ride quality and reliability for lifted heavy-duty vehicles. Always verify exact vehicle year, drivetrain, and lift setup before installation to ensure proper fitment.