Rancho Suspension Shock Absorber RS55151
Rancho Suspension Shock Absorber RS55151 - view 2
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Rancho Suspension Shock Absorber RS55151 - view 4
Rancho Suspension Shock Absorber RS55151
Rancho Suspension Shock Absorber RS55151 - view 2
Rancho Suspension Shock Absorber RS55151 - view 3
Rancho Suspension Shock Absorber RS55151 - view 4

Front Shock Absorber for 1969-1974 Chevrolet Blazer & More - Rancho RS55151

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$90.99
MPN: RS55151
UPC: 039703008426
Item Package Quantity: 1
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Rancho Suspension Shock Absorber P/N:RS55151
Rancho Suspension Shock Absorber P/N:RS55151
$90.99

Help smooth the ride on- and off-road with the Rancho RS5000X shock absorber (RS55151), a front shock absorber built to control ride motion. It's a direct-fit front replacement for many Chevrolet and GMC vehicles, including the 1969-1974 and 1987-1991 Chevrolet Blazer, 1975-1986 Chevrolet K10 and 1970-1991 GMC Jimmy — see the Buyer's Guide tab for the full list of fitments.

  • Cross Tuned technology: an exclusive rebound valving system paired with an advanced compression phase, tuned to improve overall handling and performance on and off road.
  • Progressive Engagement Valving: custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimize a rough ride.
  • Strong and durable: 16mm nitro-carburized piston rod to resist scuffs and corrosion, double-welded loops at stress areas, a 35mm sintered iron piston and a polyvinyl protective boot.
  • Handles temperature swings: a large 2-1/4 inch twin-tube body filled with all-weather fluid, nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixing and reduce damping fade and foaming.

Backed by Rancho's Limited Lifetime Warranty. Shocks work as a set, so replacing both sides on the axle together is recommended for balanced ride control.

Interchange: RS5151 · N8021

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

RS5151, N8021

Frequently Asked Questions

Will this Rancho shock absorber fit my truck?

RS55151 is a front shock for many Chevrolet and GMC vehicles, among them the 1969-1974 Chevrolet Blazer. Check the Buyer's Guide tab to confirm your exact year and model.

Is this a front or rear shock?

It is cataloged as a front (front outer) shock absorber for the listed applications.

What is Cross Tuned technology?

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

How is the RS5000X gas charged?

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 work together on an axle, so replacing both sides at the same time is recommended for balanced, even ride control.

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