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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 (24)
  • Q & A (5)
  • Videos (2)
  • Photos
  • Why etrailer?

Mount-n-Lock Accessories and Parts - MO22FR

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

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



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

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Mount-n-Lock RV Bumper Reinforcement SafetyStruts Review

Zach: Hey guys, Zach here at trailer.com. The last couple days, we've been out here testing some ways to carry some stuff on the back of our camper here, and we found that we really like this line of Mount-n-Lock GennyGos. It allows us to carry some heavier items like this generator. This generator weighs 90 pounds dry. We put in some fuel, it's going to be a little bit more. It's not anywhere near the capacity of this heavy duty aluminum one, that's going to be 250 pounds.

That's a lot of weight on the back of our camper. Some of those factory bumpers may not be able to hold that weight. You've probably seen some of those bumpers that have had some traditional cargo carriers on the back of them, they start bending a little bit. Those aren't really intended to carry a lot of weight.So Mount-n-Lock came up with a great idea. They've created the safety strut, and the safety strut is going to add a little bit more capacity to your bumper.

It's not going to add capacity to this carrier or anything, but it's going to make your bumper a lot stronger. The safety strut is a pretty straightforward design. It mounts right here to the frame on each side of the camper, and you will have to drill into it, but you're only doing this once and the benefit of having these on here is going to be well worth it. And then it's just going to wrap around our bumper here to add that extra strength to it, and that's going to give us an additional 400 pounds, which is going to be great to really help maximize what we can carry on the back of our camper.It's going to be constructed of 5/16" inch steel, and it has a nice black powder coat finish on it so it's going to hold up against rust and corrosion. So I have the standard one on here today, but this is also going to work with your different types of frames, because this is a tube channel right here that's mounted to the frame of our camper.

And if you have an I-beam, we also have a universal kit that that's going to work out well for those. But what's great about both those kits is it's going to come with all the included hardware to get that secured in place.As you can see here, this is where our safety strut is going to mount. It's going to fit around that bumper and then it's going to attach to this little frame right here, which is attached to our camper's frame. So it's important to understand what this piece is right here. Ours is just a tube frame, so we can use either the standard or the universal safety strut.

But if you have a short I-beam, a double channel frame, or a tall I-beam, or an S-beam frame, then you're going to want to pick up the universal safety strut.Another thing to keep in mind is the size of your bumper. So we have a 4" by 4" bumper here today, but you can see this is going to work with bumpers from that 4" up to 4 1/2" as a square bumper. And I think you're going to be pretty happy with the capacity this is going to give you. If you've got that standard bumper that isn't going to give you a lot of weight to carry a couple generators back here, or if you have a heavy modified version like we have here, that weight rating is going to give you a lot of possibility for carrying a lot of different stuff back here. So overall, it's a really good way to get you some higher weight, it's easy-ish to install, and I think you're going to be pretty happy with it. That's going to do it for our look at the Mount-n-Lock safety struts.


Customer Reviews

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

Average Customer Rating:  4.7 out of 5 stars   (24 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:

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:

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



- 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:



- MO22FR
by:



- MO22FR
by:



- MO22FR
by:

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



- MO22FR
by:



- MO22FR
by:

Heavy duty. Very satisfied. Installed e asily.



- MO22FR
by:



- MO22FR
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- MO22FR
by:

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



- MO22FR
by:



- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts


Easy install and great design!



- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts


It was very good easy to install very happy with it .



- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts




- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts




- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts




- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts




- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts


Extremely easy to install and the directions are pretty straight forward. Great product



- MO34VR
by:

Review from a similar SafetyStruts in Accessories and Parts



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

  • Availability Mount n Lock SafetyStruts for RV Bumper
    Yes we do have the Mount n Lock SafetyStruts part # MO22FR for standard RV bumpers or the part # MO34VR for a universal setup.
    view full answer...
  • Will the Curt RV Bumper 2" Trailer Hitch Receiver E-100 Work To Pull a Trailer
    The Curt RV Bumper 2" Trailer Hitch Receiver part # E-100 which is a fit for a standard 4" x 4" rear bumpers will allow you to tow a trailer up to 3,500 lbs. However, that is what the hitch is rated for and the bumper could be rated for less (must confirm with manufacturer). If so, you could install supports, the Mount-n-Lock SafetyStruts Standard RV Bumper Support Brackets part # MO22FR or installs a frame mount hitch, the Adjustable Width Trailer Hitch Receiver for RVs part # 13703.
    view full answer...
  • Bumper-Mounted HiLoHitch And Reinforcement Support Brackets For RV Bumpers
    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...
    view full answer...
  • 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.
    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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