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Mount-n-Lock SafetyStruts Standard RV Bumper Support Brackets - 4" to 4-1/2"

Mount-n-Lock SafetyStruts Standard RV Bumper Support Brackets - 4" to 4-1/2"

Item # MO22FR
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Beef up your RV bumper and boost your weight capacity to 400 lbs so that you can safely haul your generator and other heavy cargo. Brackets mount to 6" or taller I-beams and S-beams and 4" or taller tube frames to reinforce your bumper. Call 800-298-1624 to order Mount-n-Lock accessories and parts part number MO22FR or order online at etrailer.com. Free expert support on all Mount-n-Lock products. Guaranteed Lowest Price and Fastest Shipping for Mount-n-Lock SafetyStruts Standard RV Bumper Support Brackets - 4" to 4-1/2". Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (40)
  • Q & A (8)
  • Photos
  • Why etrailer?

Mount-n-Lock Accessories and Parts - MO22FR

  • RV Cargo Carrier
  • RV Bumpers
  • Bumper Parts
  • Mount-n-Lock

Beef up your RV bumper and boost your weight capacity to 400 lbs so that you can safely haul your generator and other heavy cargo. Brackets mount to 6" or taller I-beams and S-beams and 4" or taller tube frames to reinforce your bumper.


Features:

  • SafetyStruts reinforce your RV bumper so that you can carry generators and other heavy cargo
    • Increases weight capacity to 400 lbs
    • Helps prevent bumper detachment from your RV's frame
  • Brackets mount to welded or bolted I-beam, S-beam, and single channel frames 6" or taller, and tube frames 4" or taller
  • Optional spacer bars can be removed to fit around larger bumpers up to 4-1/2" wide
    • Gives you more space on your frame for proper mounting
  • Power-coated, galvanized steel construction resists rust and corrosion
  • Easy, self-drilling installation - nut driver and hardware included
  • Made in the USA


Specs:

  • Application: 4" to 4-1/2" RV bumpers
  • Overall dimensions: 7-1/2" wide x 5" tall x 5/16" thick
  • Weight capacity: 400 lbs when evenly distributed
  • Quantity: 2 brackets
  • Limited lifetime warranty


Note: Bumper weight capacities vary by manufacturer. Please be sure to verify the weight capacity of your bumper with the manufacturer prior to loading.


Spacer Bars

Spacer Bars

These all-steel brackets also have optional spacer bars that are in place to allow a nice, snug fit around your standard 4" RV bumper. They can be removed so that the brackets fit around larger bumpers between 4-5/16" and 4-1/2" wide, or if your bumper is bolted to the frame and the bolts interfere with the spacer bar.


Spacer bars Used-Unused

If your RV's frame has less than 3" of mounting space, the spacer bars are the perfect solution to create that extra space to properly mount your SafetyStruts. Simply remove the spacer bar, flip it around, re-locate it to the outer part of your bumper, and secure in place with the included nuts and bolts.



1SSNHD Mount-n-Lock SafetyStruts RV Bumper Brackets - Standard Fit - 4" to 4-1/2"

Installation Details MO22FR Installation instructions


California residents: click here



Customer Reviews

Mount-n-Lock SafetyStruts Standard RV Bumper Support Brackets - 4" to 4-1/2" - MO22FR

Average Customer Rating:  4.8 out of 5 stars   (40 Customer Reviews)

Beef up your RV bumper and boost your weight capacity to 400 lbs so that you can safely haul your generator and other heavy cargo. Brackets mount to 6" or taller I-beams and S-beams and 4" or taller tube frames to reinforce your bumper.

- MO22FR
by:

They fit well, however I would be more comfortable if the removable spacer was closer to the back square of the bumper



- MO22FR
by:

Very easy to install. Looks good and will see how it works. My bumper is a tube frame welder to an I beam.



- MO22FR
by:

Haven't installed it yet - but I'm going to get a 2" piece of channel 72" long and put clamp that on the lower edge of the 4" tube and then clamp the supports to it and mount the supports. A little extra support can't hurt.



- MO22FR
by:

etrailer delivery was fast and I was kept informed throughout the shipment process. I will tell you that Customer Service was excellent in doing a price match for me against a competing site that carried the same product. Here's what you need to know about the install. Forget the self tapping screws and use a 3/4" high speed drill bit. Make sure to keep the bit oiled during drilling. Also you will need a minimum of 1 clamp to hold the brace in place. I would have rated the product a 5 star, but on my rig there is a L-brace also welded to the bumper. The washers included that are supposed to be shims are not thick enough to fit the bracket firmly against the frame. I had to use some additional washers I already had. But I have no doubt this will hold the extra spare tire I have added to my travel trailer.



- MO22FR
by:

Did not fit my frame rails well. included hardware was not usable in my case. Trip to hardware store for hardware, some drilling, and all is now good.



- MO22FR
by:

Heavy duty. Fit and finish are excellen t.



- MO22FR
by:

Great looking product looks really strong. But it didn’t fit my 2021 Jayco



- MO22FR
by:

Quick delivery, item as described and easy to install, would highly recommend them for your trailer needs!!!



- MO22FR
by:

Heavy duty. Very satisfied. Installed e asily.



- MO22FR
by:

The Bumper Braces are well made. and easy to install.Ill be able to haul much more wt now.



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- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts


etrailer.com is awesome. Always carry quality products with fast processing and delivery.



- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts


Great product. Whom ever put together the accessories (bolt, shims, etc) put a lot of thought into it. I had everything I needed to get a good job done.



- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts


Easy install and great design!


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Ask the Experts about this Mount-n-Lock Accessories and Parts

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    Yes we do have the Mount n Lock SafetyStruts part # MO22FR for standard RV bumpers or the part # MO34VR for a universal setup.
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    In the attached demonstration video for Mount-n-Lock HiLoHitch for 4" RV Bumpers - 2" Hitch Receiver - 300 lbs # MNT47FR, the reinforcement plates that are mentioned are Mount-n-Lock SafetyStruts Standard RV Bumper Support Brackets - 4" to 4-1/2" # MO22FR and Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets - 4" to 4-1/2" # MO34VR. Use # MO22FR for standard bumpers and use # MO34VR for universal bumpers such as i-beams. These support brackets will increase your bumper's...
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  • Which Trailer Hitch Receiver For 2007 Fleetwood Highlander Avalon
    The best option to install a Class 3 trailer hitch receiver below the rear bumper of your 2007 Fleetwood Highlander Avalon is the Curt Adjustable Trailer Hitch Receiver # C13701. This hitch offers a 2" drop and will work on trailer frames between 18" - 51" wide. The reason I recommend this hitch is due to it mounting to the frame of your trailer to give additional strength. Another option is the Curt RV Bumper 2" Trailer Hitch Receiver # E-100 which will mount to your rear bumper as...
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  • How To Determine Bumper Capacity Using 24x84 etrailer Cargo Carrier for RV Bumper
    The 24x84 etrailer Cargo Carrier for RV Bumper part # e96ZR weighs 82 lbs. Therefore, the bumper must be rated for the weight of the carrier and all cargo, up to 500 lbs. In order to verify the weight capacity of the bumper, you'll need to reach out to the RV manufacturer directly. We do offer Mount-n-Lock SafetyStruts Standard RV Bumper Support Brackets part # MO22FR if you need more support.
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  • Comparing Mount-n-Lock SafetyStruts MO34VR and MO22FR
    I would be happy to help! The only difference between the Mount-n-Lock Safety Struts # MO34VR and # MO22FR you were looking at is the hardware used to attach them. The # MO34VR uses nuts and bolts where the # MO22FR uses self tapping screws. Since both have the same 400lb load rating I recommend going with the # MO22FR as it will be the easiest to install. This will allow you to use the Ultra-Fab 2" Motor Home Trailer Hitch Receiver for 4" x 4" Bumpers - 3,500 lbs # UF35-946402...
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    The Curt RV Bumper 2" Trailer Hitch Receiver, # E-100 is designed to fit standard 4" x 4" rear bumpers providing ability to tow a trailer up to 3,500 lbs. However, just because this component is rated for that does not mean the bumper on your RV is; you will need to confirm with manufacturer for spec on your Forest River Cherokee 284DBH. In addition, you will need to check legality of towing a bumper pull trailer behind a bumper pull trailer. Pulling a trailer behind a 5th wheel is frequently...
    view full answer...

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Info for this part was:

Employee Andrew K
Video by:
Andrew K
Employee Jeff D
Installed by:
Jeff D
Employee Zach D
Installed by:
Zach D
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Amanda M
Edited by:
Amanda M
Employee Adam Y
Written by:
Adam Y

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