Rancho Suspension Shock Absorber RS55379
Rancho Suspension Shock Absorber RS55379 - view 2
Rancho Suspension Shock Absorber RS55379 - view 3
Rancho Suspension Shock Absorber RS55379 - view 4
Rancho Suspension Shock Absorber RS55379
Rancho Suspension Shock Absorber RS55379 - view 2
Rancho Suspension Shock Absorber RS55379 - view 3
Rancho Suspension Shock Absorber RS55379 - view 4

Rear Shock Absorber for 2014-2016 Chevrolet Silverado 1500 & More - Rancho RS55379

Be the first to review this product
$90.99
MPN: RS55379
UPC: 039703008525
Item Package Quantity: 1
Adding to cart… The item has been added

Have questions?

Ask an Expert
Rancho Suspension Shock Absorber P/N:RS55379
Rancho Suspension Shock Absorber P/N:RS55379
$90.99

Smooth out the bumps and take back control on and off the pavement with the Rancho RS5000X shock absorber (MPN RS55379). This Rancho shock absorber drops in as a direct-fit rear damper for the 2011-2025 Chevrolet Silverado 2500 HD and 3500 HD and the 2011-2025 GMC Sierra 2500 HD and 3500 HD — see the Buyer's Guide tab for engine-level fitment.

  • Cross Tuned technology: an exclusive rebound valving system and advanced compression phase tuned to improve overall handling and performance on and off road.
  • Progressive Engagement Valving: custom-tuned for the application to help reduce initial impacts at low speeds and minimize a rough ride.
  • Built strong: a 16 mm nitro-carburized piston rod resists scuffs and corrosion, with double-welded loops at stress areas, a 35 mm sintered iron piston, and a polyvinyl protective boot.
  • Twin-tube design: a large twin-tube body filled with all-weather fluid runs cooler and withstands internal temperatures from -40 to 248°F.

Nitrogen gas pressurized to 150 PSI helps minimize air-to-oil mixing to reduce damping fade and foaming, while a low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression. Backed by Rancho's Limited Lifetime Warranty.

Frequently Asked Questions

What vehicles does the Rancho RS55379 fit?

It is a direct-fit rear shock for the 2011-2025 Chevrolet Silverado 2500 HD and 3500 HD and the 2011-2025 GMC Sierra 2500 HD and 3500 HD. Check the Buyer's Guide tab for engine-level fitment.

Is this a front or rear shock?

This Rancho absorber is cataloged as a rear position shock absorber for the listed applications.

What is Cross Tuned technology?

It is Rancho's exclusive rebound valving system paired with an advanced compression phase, designed to improve overall handling and performance both on and off road.

Is this shock gas pressurized?

Yes. It is nitrogen gas pressurized to 150 PSI, which helps minimize air-to-oil mixing to reduce damping performance fade and foaming.

Should I replace shocks in pairs?

Shocks are sold individually. Replacing both shocks on the same axle together as a matched set is recommended for balanced, even ride control.

Related Products

!