Gas-Magnum RV Shock Absorber
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Monroe Gas-Magnum RV Shock Absorber

Part No. 557003 Warranty Details  
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The Monroe® Gas-Magnum® RV shock absorber utilizes advanced technology, combining a gas charge and full displaced valving for superior RV performance.

Product Features:
  • Multi-lip fluid seal designed for smooth performance, long life and reduced friction
  • Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration - on most applications
  • 2 inch or 2-3/8 inch (50.8 mm or 60.3 mm) reserve tube (where required)
  • 1-3/8 inch Bore: Lower operating pressure than standard 1 inch bore units
  • 5/8 inch Piston Rod: Heavy-duty nitrocarburized rod for long service life. On non-dust shield units only
  • Resistance and arc-welded mounts, provide a 9,000 lbs. (4,082 kg) tensile strength for maximum durability (on most applications)
  • Patented unique hydraulic rebound lockout (when required)
  • 10-Stage full displaced valving (on most applications)
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Compressed Length:10.625 in
Dust Shield:Yes
Extended Length:15.750 in
Parts Pack(s):P1234
Travel Length:5.125 in


by PowerReviews
MonroeGas-Magnum RV Shock Absorber

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

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work great


from San jose, CA

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Verified Buyer
3 or more reviews submitted

Comments about Monroe Gas-Magnum RV Shock Absorber:

These shocks are high quality, easy to install and work great so far, but most shocks do in the beginning anyway. I'd like to hear from someone who has had them on for 5 years or so.

  • Was this a gift?:
  • No

(2 of 2 customers found this review helpful)


I always buy Monroe, the best shocks!


from Lake Charles, La

Verified Buyer


  • Bullet Proof
  • Durable
  • Easy To Use
  • Heavy duty
  • High-Performance
  • Versatile


  • Not self installing

Best Uses

  • Heavy Duty Applications
  • Motor Home
  • Trucks

Comments about Monroe Gas-Magnum RV Shock Absorber:

These shock absorbers are heavy duty for one ton and over applications. I am a compettitive driver and builder of race components. A lot of the times folks ask me to build coilover shocks for their race cars. These automotive shocks have the largest piston shaft I have seen. When I build a race car product I always over engineer it for safety. These shock absorbers have not failed me yet and I have been using monroe products for over twenty five years.

  • Car & Truck:
  • Competitive Driver, Mechanic, Truck Enthusiast

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