Rancho RS55378 Shock Absorber - Front
OE Quality 60-Day Returns
Rancho
 RS5000X

Rancho RS55378 Shock Absorber - Front

Brand Rancho RS55378
Position Front
Compressed Bumper Stop No
Compressed Length 14.67
Dust Shield Included No
Extended Bumper Stop No
Extended Hydraulic Lockout No
Extended Length 18.98
Lower Mounting Code CLEV
Lower Mounting Description Clevis Bracket Mount
Parts Pack P01299
Travel Length 4.31
Upper Mounting Code XP15
Upper Mounting Description XP15
Product line RS5000X
Fits Chevrolet and GMC · 60 vehicles

Exclusive valving system. Advanced compression improves handling and performance on and off the road.

Shock absorber. Built for controlled suspension movement and a smoother ride.

Cross-references RS5378 for the same application. See all 1.

$80.06Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Shock Absorbers are typically replaced in pairs, axle by axle.
Order total $80.06
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Rancho RS5000X Front Shock for HD Trucks

The Rancho RS5000X front shock absorber is built for Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications that need controlled ride response on pavement and off-road. Part number RS55378 uses Rancho’s RS5000X valving and compression-focused tuning to improve handling without changing the truck’s suspension layout.

Key Features

  • Rancho RS5000X shock absorber for front suspension use
  • Exclusive valving system tuned for on-road and off-road control
  • Advanced compression functionality for more consistent damping response
  • Extended length: 18.98 in; compressed length: 14.67 in
  • Travel length: 4.31 in
  • Lower mount: clevis bracket mount
  • Upper mount: XP15
  • No dust shield, compressed bumper stop, extended bumper stop, or extended hydraulic lockout

Product Details

Rancho RS5000X shocks are part of the RS5000X line, a suspension shock absorber series focused on balanced control for trucks that see mixed driving conditions. This RS55378 front shock is engineered for 2021-2025 Chevrolet Silverado 2500 HD and Silverado 3500 HD models, as well as 2021-2025 GMC Sierra 2500 HD and Sierra 3500 HD models. It also fits 2011-2020 Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD front applications with a front raised height of 1.0 in. to 2.5 in., and it is not for use with aftermarket shock spacers or relocation brackets. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Shock Helps Address

  • Excessive front-end bounce on heavy-duty Chevrolet Silverado and GMC Sierra trucks
  • Loose or unsettled steering feel over rough pavement
  • Reduced control during off-road or uneven-road driving
  • Inconsistent damping after suspension height changes within the listed range
  • Front shock replacement needs on HD truck suspension systems

Installation Notes and Tips

Verify front suspension height and mounting style before ordering. Fits 2021-2025 Chevrolet Silverado 2500 HD, front; 2021-2025 Chevrolet Silverado 3500 HD, front; 2021-2025 GMC Sierra 2500 HD, front; and 2021-2025 GMC Sierra 3500 HD, front. For 2011-2020 Chevrolet Silverado 2500 HD, front; 2011-2020 Chevrolet Silverado 3500 HD, front; 2011-2020 GMC Sierra 2500 HD, front; and 2011-2020 GMC Sierra 3500 HD, front, the truck must have a front raised height of 1.0 in. to 2.5 in. Do not use with aftermarket shock spacers or relocation brackets. Confirm the clevis bracket lower mount and XP15 upper mount match the vehicle before installation.

Quality Assurance

Rancho RS5000X shocks are built around an exclusive valving design and compression-focused damping technology to support consistent front suspension performance in HD truck use. Part number RS55378 is specified for the listed Chevrolet Silverado and GMC Sierra applications.

Related reading

This part fits 60 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelPositionNotes
2025ChevroletSilverado 2500 HDCustomFrontRS5000X
2025ChevroletSilverado 3500 HD—FrontRS5000X
2025GMCSierra 2500 HDSLTFrontRS5000X
2025GMCSierra 3500 HD—FrontRS5000X
2024ChevroletSilverado 2500 HDCustomFrontRS5000X
2024ChevroletSilverado 3500 HD—FrontRS5000X
2024GMCSierra 2500 HDSLTFrontRS5000X
2024GMCSierra 3500 HD—FrontRS5000X
2023ChevroletSilverado 2500 HD—FrontRS5000X
2023ChevroletSilverado 3500 HD—FrontRS5000X
2023GMCSierra 2500 HD—FrontRS5000X
2023GMCSierra 3500 HD—FrontRS5000X
2022ChevroletSilverado 2500 HD—FrontRS5000X
2022ChevroletSilverado 3500 HD—FrontRS5000X
2022GMCSierra 2500 HD—FrontRS5000X
2022GMCSierra 3500 HD—FrontRS5000X
2021ChevroletSilverado 2500 HD—FrontRS5000X
2021ChevroletSilverado 3500 HD—FrontRS5000X
2021GMCSierra 2500 HD—FrontRS5000X
2021GMCSierra 3500 HD—FrontRS5000X
2020ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2020ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2020GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2020GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2019ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2019ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2019GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2019GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2018ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2018ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2018GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2018GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2017ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2017ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2017GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2017GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2016ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2016ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2016GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2016GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2015ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2015ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2015GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2015GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2014ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2014ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2014GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2014GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2013ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2013ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2013GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2013GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2012ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2012ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2012GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2012GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2011ChevroletSilverado 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2011ChevroletSilverado 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2011GMCSierra 2500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
2011GMCSierra 3500 HD—Frontwith Front Raised Height 1.0 (in) to 2.5 (in); Not for use with aftermarket shock spacers or relocation brackets.; RS5000X
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
RS5378