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555xx Series
Commonly used for select Class B, Class C and tow-vehicle applications. The current family uses a 1-3/8-inch bore and a 2-inch reserve tube.
Motorhome Suspension
Monroe Gas-Magnum RV Shocks
Motorhome Suspension
Monroe Gas-Magnum RV Shock Families
Monroe Gas-Magnum shocks combine gas charging and application-specific valving for supported motorhome and towing applications.
557xx Series
Commonly used for select Class A front- and rear-engine applications, with a 1-3/4-inch bore and 2.38-inch reserve tube.
Gas-Charged Control
Designed to help maintain consistent damping and control spring motion in the correct application.
Choose by Chassis and Axle Position
A 555xx or 557xx family number is not enough to establish fitment. Confirm the chassis manufacturer, chassis model year, front or rear position, mount type and product notes before ordering.
When to Replace RV Shocks
Look for repeated bouncing, increased pitching, wet fluid loss, damaged mounts or a clear decline in control. A light film near the seal should be evaluated using the weepage vs. leakage guide before replacement is based on appearance alone.
Before You Order
Confirm the Chassis
Use the chassis manufacturer and model year, not only the name on the coach.
Name the Symptom
Decide whether the problem is vertical motion, body roll, steering movement, axle shift or load support.
Inspect the System
Check tires, alignment, mounts, bushings and existing suspension parts before replacing one component.
Related Motorhome Guides
Frequently Asked Questions
Will Monroe Gas-Magnum RV Shocks fit every motorhome?
No. Motorhome suspension parts are chassis- and often axle-specific. Confirm the chassis manufacturer, chassis model year, GVWR and suspension layout.
Do I need to inspect the RV before ordering?
Yes. Tire pressure, alignment, worn bushings, loose steering parts and damaged mounts can change the diagnosis or prevent a new part from working as intended.
Where should I start if I am not sure what I need?
Use the vehicle selector with your chassis information, then describe the exact motion or load problem. Contact Motorhome Shocks & More if two applications appear similar.
Confirm Fitment Before You Order
Use the chassis information, model year and axle details from your motorhome, or call us when two applications look similar.