Availability of Higher Capacity Mount-n-Lock RV Bumper
Updated 08/03/2026 | Published 07/28/2026
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Question:
I have Mont N Lock 4”. I mounted a 2-bike rack, and it has twisted and deformed the tube. Is a heavier tube available?
asked by: B C
Expert Reply:
Hey B C! Mount-n-Lock does have the Heavy-Haul'r Heavy Duty and Extreme Duty replacement bumpers which are larger with a higher capacity. You can choose from the following:
-Mount-n-Lock Heavy-Haul'r Heavy Duty Replacement RV Bumper - 5.3" - 660 lbs - Black # MNT98ZR
-Mount-n-Lock Heavy-Haul'r Extreme Duty Replacement RV Bumper - 5.3" - 660 lbs - Black # MNT48ZR
The capacity is the same so the main difference is in the number of brackets. Since you already had issues with the bike rack twisting and deforming the tube I would get the Extreme Duty which has additional brackets to prevent that from happening.
What kind of bike rack and bikes are you carrying?
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Product Page this Question was Asked From
Mount-n-Lock Heavy-Haul'r Heavy Duty Replacement RV Bumper - 5.3" - 660 lbs - Black
- Accessories and Parts
- RV Cargo Carrier
- RV Bumpers
- Bumper Parts
- Mount-n-Lock
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