Front Shock Absorber for 2011-2013 Ram 2500 & More - Rancho RS55221

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$90.99
MPN: RS55221
UPC: 039703006354
Item Package Quantity: 1
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Rancho Suspension Shock Absorber P/N:RS55221
Rancho Suspension Shock Absorber P/N:RS55221
$90.99

Smooth out rough pavement and trail with the Rancho shock absorber RS55221, a front-position RS5000X twin-tube damper. It's a direct-fit replacement for many vehicles, among them the 1994-2001 Dodge Ram 1500, 2011-2013 Ram 2500 and 1994-2010 Dodge Ram 2500. See the Buyer's Guide tab for the full list of vehicles.

  • Cross Tuned technology: Rancho's exclusive rebound valving system and advanced compression phase are designed to improve overall handling and performance on and off road.
  • Progressive Engagement Valving: Custom-tuned for each vehicle to help reduce initial low-speed impacts and minimize a rough ride.
  • Strong and durable: 16mm nitro-carburized piston rod resists scuffs and corrosion, with double-welded loops at stress areas, a 35mm sintered iron piston, and a polyvinyl protective boot.
  • All-weather build: Large 2¼-inch twin-tube body filled with all-weather fluid, nitrogen gas pressurized to 150 PSI to reduce foaming, and rated to withstand internal temperatures of -40 to 248°F.

A polyurethane rebound bumper and rubber bushings help absorb ride harshness, while the fluon-banded piston, Compression Control Valve, and low-friction self-lubricating seal work to maintain shock motion control. For balanced ride and handling, replacing shocks as an axle pair is a good practice. Backed by Rancho's Limited Lifetime Warranty.

Interchange: 813006 · 34522 · 34782 · 911193 · 911223 · 922553B · RS5221 · 23161A · N8091 · 87283

This part cross-references / interchanges with the following part numbers:

813006, 34522, 34782, 911193, 911223, 922553B, RS5221, 23161A, N8091, 87283

Frequently Asked Questions

Will this Rancho shock absorber fit my 1994-2010 Dodge Ram 2500?

Yes. RS55221 is listed for the 1994-2010 Dodge Ram 2500 and the 2011-2013 RAM 2500. Confirm your year against the Buyer's Guide before ordering.

What position does this shock install in?

The catalog lists RS55221 as a front-position shock absorber for the covered Ram applications.

What is Cross Tuned technology?

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

How much gas pressure does this shock use?

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

Should I replace both front shocks at once?

Shocks are position-specific, but replacing them as a matched axle pair is a good practice for balanced ride quality and handling.