Monroe® - The right choice for hard-working trucks
from class 3 to 8.
Monroe® Commercial Vehicle ride control products are
application-engineered to match your driving needs.
Monroe® Commercial Vehicle shock absorbers are built for durability, even with the demands of high mileage and severe use.
Your single source supplier – featuring a complete line of ride control products for today’s medium, heavy-duty and industrial markets.
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MONROE® COMMERCIAL VEHICLE: Support
Monroe's Technical Support will help you find answers to the most frequently asked product and installation questions and provide invaluable technical training information. If you need additional information or assistance, Monroe's Ride Control Technical Assistance Team can assist you.
MONROE® COMMERCIAL VEHICLE: Why Shock Absorbers Wear Out
Commercial vehicle shock absorbers control spring movement to help keep your tires in contact with the road. Shock absorbers are critical safety components that can affect tire wear, stability, braking, vibration, driver comfort, and the life of other steering and suspension parts.

MONROE® COMMERCIAL VEHICLE: Reasons for Commercial Vehicle Shock Wear
  • Deterioration through normal operation
    Each mile of operation averages 1750 stabilizing actions.
    - 22 million cycles occur - at 12,425 miles / 20,000 km*
    - 88 million cycles occur - at 49,700 miles / 80,000 km*
    - 132 million cycles occur - at 74,550 miles / 120,000 km*
  • Hydraulic fluid deterioration
    Since you don’t change the oil in your shocks, over time, the internal hydraulic fluid loses viscosity and elasticity, impairing the unit’s ability to dissipate road impacts.
  • Deterioration of shock components
    The components within a shock absorber are made of metal, rubber and plastic, all of which eventually degrade through extended use, extreme heat, and adverse road and weather conditions.
  • Determination of a qualified repair technician
    Not all symptoms of shock deterioration are readily discernable; after a thorough inspection, a qualified repair technician may determine your truck’s shocks have worn to the extent that those units legitimately require replacement.


*On average
MONROE® COMMERCIAL VEHICLE: Reasons for Commercial Vehicle Shock Wear