Monroe 65500 | Suspension Shock Absorber

Part Number
Magnum Shock Absorber
Special Price $73.80 Regular Price $86.82
In stock
Only 4 left
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Estimated Ship Date: 1 Business Day or Less
The Monroe® Magnum™ shock absorber for Class 6-8 Vehicles is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today's heavy truck suspension systems. Its extra-large piston bore is engineered to handle the demands of high mileage and severe use. When combined, the gas charge and large-bore provide the consistent control necessary for demanding truck suspensions

BRAND: Monroe Shocks & Struts


  • Monroe Shocks & Struts Magnum 65500 Shock Absorber
  • 1-3/4-inch (44.6 mm) bore: Large bore than most shocks to provide more consistent control
  • PTFE coated bearing: Reduces friction during operation between the rod and rod guide, improving durability - on most applications
  • Robust hydraulic lock-out: Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly - when required
  • Loop welding technique: Resistance weld with additional 360-degree weld to provide up to 15,000 lbs. (6,804 kg) tensile strength for maximum durability - when required
  • Nitrogen gas-charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration - on most applications
  • Magnum Shock Absorber
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 2-3/8 inch (60.3 mm) reserve tube: More fluid for more consistent performance - on most applications
  • Tenneco shouldered bushings: Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability - on most applications
  • Magnum Shock Absorber
  • 10-stage valving: Reacts to wide range of driving conditions - on most applications


Compressed Bumper StopNo
Compressed Length11.8594
Dust ShieldYes
Dust Shield IncludedYes
Dust Shield MaterialMetal
Extended Bumper StopNo
Extended Hydraulic LockoutYes
Extended Length17.5000
Lower Mounting CodeLS54
Lower Mounting DescriptionLoop Bushing & Sleeve Mount - 3/4" Sleeve ID X 1.3/4" Sleeve OAL
Parts PackNone
Travel Length5.6410
Upper Mounting CodeLS54
Upper Mounting DescriptionLoop Bushing & Sleeve Mount - 3/4" Sleeve ID X 1.3/4" Sleeve OAL



  • Hendrickson: B21553
  • Reyco Granning: 2352301
  • Gabriel: 85738
  • Reyco Granning: 665748
  • Gabriel: 85086
  • Koni: 902890
  • Autocar LLC: A3711359001
  • OEM: S21553
  • Sachs: 315536
  • Hendrickson: S21553
  • Sachs: 317536
  • Autocar LLC: A3730008
Customer Questions
How often should shock absorbers be replaced?
Shock absorbers should generally be replaced every 50,000 miles or every 5-7 years
How to replace shock absorbers?
To replace shock absorbers, you need to remove the wheel and tire assembly, unbolt the old shock absorber, replace it with a new one, and tighten the bolts. Then, reinstall the wheel and tire, and test the new shocks.
Why do shock absorbers leak?
Shock absorbers can leak due to worn seals, damage to the piston or cylinder, or corrosion from exposure to moisture and road salt.
Can shock absorbers be replaced?
Yes, shock absorbers can be replaced when they start to wear out or fail.
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