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

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

Part Number: MO22FR
In Stock
$87.95
Retail:$100.70
You Save: 13%
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Need to haul that extra-heavy generator to the campsite? We highly appreciate that these brackets beef up an RV bumper weight rating by 400 lbs. You'll have peace of mind that your bumper won't detach on the highway. 1-800-940-8924 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. Great prices and Fastest Shipping for Mount-n-Lock SafetyStruts Standard Bumper Brackets - 4" to 4-1/2" - Qty 2. Accessories and Parts reviews from real customers.
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  • Reviews (272)
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  • Used (1)

Mount-n-Lock Accessories and Parts - MO22FR

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

Need to haul that extra-heavy generator to the campsite? We highly appreciate that these brackets beef up an RV bumper weight rating by 400 lbs. You'll have peace of mind that your bumper won't detach on the highway.


Features:

  • SafetyStruts reinforce your RV bumper so you can carry generators and other heavy cargo
    • Boosts weight capacity to prevent bumper detachment from your RV's frame
  • Optional spacer bars can be removed so the brackets fit better around larger bumpers
  • Powder-coated, galvanized steel construction resists rust and corrosion
  • Standard fit - works with welded or bolted I-beam, S-beam, and single channel frames 6" or taller, and tube frames 4" or taller
  • Installation requires some drilling - 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.



1SSNHD Mount and Lock Safety Struts RV Bumper Brackets - Standard Fit

Installation Details MO22FR Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.7

272 reviews
Review sort icon
Need to haul that extra-heavy generator to the campsite? We highly appreciate that these brackets beef up an RV bumper weight rating by 400 lbs. You'll have peace of mind that your bumper won't detach on the highway.

by:

I believe that it definitely helped strengthen/support the square tube bumper on my travel trailer when I needed to add a bolt on tow receiver for a bike carrier, a black water tote and rack, spare trailer tire with bracket and extra propane tank cradle with tank. Everything is still square and not bent and we have traveled probably 40,000 miles since installing it. Shipping was quick and friendly customer service checkups. Worth every penny!



by:

Installation was easy. Product is strong and should do the job!



by:

Worked great. Easy install.



by:

Haven’t installed yet but looks just what I need



by:

Fit perfectly and easy to install!! These will provide great reenforcement of my Travel Trailers 4" bumper so I can use my bike rack on it with confidence!!



by:

Delivered right on time, much faster than I expected. Quality construction and SOLID.



by:

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



by:

This is a mixed review... I ordered from eTrailer specifically because they had delivered other orders on time and for good prices. This time, The expected delivery date was well before I was planning on leaving for a vacation. The delivery date kept getting pushed back, primarily due to the "It shipped" date given by eTrailer did not mean the product was actually received by the local Post Office. That did not happen for an additional three days. Monday delivery became Tuesday, that became Wednesday... so I ordered from Amazon, just in case this continued. I received the Amazon order in two days at the same price, installed the brackets and went on our vacation as planned. The eTrailer order was delivered late on Friday, after I had departed. I will say etrailer waived the return shipping fee due to the late delivery. I'm not sure I will order from etrailer in the future... only time will tell. The three star review is mainly due to the delivery, not the actual product. The identical items received from Amazon worked as designed and were ewasy to install. Would have been five star review for the product, 2 star review for the delivery.



by:

The brackets worked well.
The only issue
was the kit contained a 3/8 nut driver but none of the bolts were 3/8!! They were 7/16… lol! Good thing I had my own tools…



by:

These are excellent in quality and materials. I needed additional spacing for my particular setup but overall installation was a breeze. Time will tell how well they help support my bike rack.



by:

Quality product quick ship



by:

For an obviously returned product missing a part I made it work



by:

Easy to install and worked perfect, just did a 7 hour road trip through the bumpy mountain roads with a spar tire and electric bike rack with no issues!



by:

They are exactly what I needed on my coleman lantern camper. I have no doubts on what I can haul now, easy install, easily the strongest option. Don't do the other hacks, just get these and be done, be happy!



by:

Pretty easy to install using a couple of clamps to hold them in place. Of course one shifted downward leaving a small gap and I didn't notice before drilling. I installed these along with a 2" receiver. Just a little more peace of mind.



by:

Works great

Kevin profile picture

Kevin

4/26/2026

Great thanks



by:

Four stars for now. Easily installed. I've made a few trips now with bikes on the bumper and I keep looking for cracks in welds. So far so good. Two bikes weigh 65lbs combined. I'm also using the ShakeStopper Heavy Duty 2" Receiver. My wife was following me on our recent trip and she said the bikes didn't move at all. Time will tell if they earn the 5th star.



by:

Was straightforward to install. Added to our TT bumper as "insurance" against my concern the torque from the bike rack and bikes might cause our bumper to bend. That hasn't been the case (the bumper hasn't budged), but I appreciate the confidence that having these extra supports provides; at least the bumper probably wouldn't catastrophically separate from the frame...



by:

So far seem good..haven't tried with any weight on them yet



by:

Installed just like the installation instructions described. A little elbow grease needed, but solid support brackets are the result. Great design and functionality.



by:

These look great and I bet they work excellent too. Its just i dont need two set the cargo rack came with them



by:

Relatively easy to install, after trimming a bit of the I beam out of the way. Flush fit with self drilling screws (drill pilot hole first) should be very secure. Before and after pix for reference. Ready to load cargo tray and camp!

Ron profile picture

Ron

1/19/2023

good product, keeps rear bumper in place and sturdy regardless of load placed upon it.



by:

Received in a couple days. Installation was easy and straightforward. Quality product. Will test in a week with a bicycle rack mounted to the bumper.



by:

While the finished installation seems to work perfectly, the process of installing the system was difficult at best. With little room to work, getting the self tapping screws through the trailer frame was very difficult. Still I’m very pleased with the results.



by:

Seems to be working. More important, it was great to talk with etrailer to verify which ones to order. Thank you


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Condition: Like New

Notes: May have damaged packaging or minor cosmetic blemishes.

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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 Mary K
Updated by:
Mary K
Employee Wilson B
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Employee Michael B
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