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

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

Item # MO34VR
Retail:$91.54
Our Price: $79.95
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Shipping Weight: 4 lbs
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Beef up your RV bumper and boost your weight capacity to 400 lbs to safely haul your generator and other heavy cargo. Universal design mounts to most RV frames to reinforce your bumper and prevent metal fatigue that causes your bumper to detach. 1-800-496-5010 to order Mount-n-Lock accessories and parts part number MO34VR 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 Universal RV Bumper Support Brackets - 4" to 4-1/2". Accessories and Parts reviews from real customers.
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  • Reviews (99)
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  • Why etrailer?

Mount-n-Lock Accessories and Parts - MO34VR

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

Beef up your RV bumper and boost your weight capacity to 400 lbs to safely haul your generator and other heavy cargo. Universal design mounts to most RV frames to reinforce your bumper and prevent metal fatigue that causes your bumper to detach.


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
    • Included standoff spacers are required for welded or bolted I-beam frames shorter than 6" or any size double channel frames
  • 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
  • Installation requires some drilling - drill bits and mounting 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.


Universal Application

Universal Application-Standoff Spacers

The included standoff spacers give you the flexibility to mount your SafetyStruts to most RV frames, making it nearly universal. This heavy-duty extension hardware is required for welded or bolted I-beam frames less than 6" tall and any size double channel frames where flanges stick out past your mounting surface. They also combat bolted-frame designs where bolts may obstruct your mounting surface. The standoff spacers won't be necessary if you have a welded or bolted I-beam, S-beam, or single channel frame 6" or taller without flanges, or a tube frame 4" or taller.


SafetyStruts w-w-o Space bar

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.



1SNUHD Mount-n-Lock SafetyStruts RV Bumper Brackets - Universal Fit - 4" to 4-1/2"

Installation Details MO34VR Installation instructions



Customer Satisfaction Score:


Customer Reviews

Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets - 4" to 4-1/2" - MO34VR

Average Customer Rating:  4.7 out of 5 stars   (99 Customer Reviews)

Beef up your RV bumper and boost your weight capacity to 400 lbs to safely haul your generator and other heavy cargo. Universal design mounts to most RV frames to reinforce your bumper and prevent metal fatigue that causes your bumper to detach.

by:

I like the product, however the kit arrived with 2 missing locking nuts that were needed to tighten the bracket to the bumper.


Comments
Thanks for letting us know about this. I have already sent your information to our customer service team and they will be reaching out to you soon.
-- Etrailer Expert Brooke M - 10/21/2022


by:

Don't waste your time or money on this. Now my bumper welds are cracked. If you want to carry more than spare tire on rear of camper bumper install a hitch on frame.


Comments
This is not a common thing to happen, can you elaborate on the size of the bumper and age of the unit?
-- Etrailer Expert David B - 09/02/2022


by:

I installed these because I was concerned about the stress that would placed on the trailer bumper from the spare tire rack and new Kayak verti rack. Installation was easy and since we have driven over 3000 miles across interstate 40 (alot of bad highway) and the bumper showed no signs of stress cracking at the welds. It was a simple addition that required no welding and the bolts that hold the bracket never loosened. I highly recommend this product, it gives you peace of mind and prevents your gear from snapping off down the road.




by:

Still need to install. Like having extra support for 4” square bumper that cargo carrier attaches to.




by:

You're my go to fory rv and trailer needs thanks.




by:

Not the easiest to install but it just had to do with the design of my Sunseeker, in most cases it looks a lot easier. Can’t really knock it for that, it’s job was to reinforce bumper. I put a rack with two 40 lb propane tanks on mine so I needed something I knew would not fail, lest I find myself in prison for being negligent and blood on my hands . Worked like a charm, too bad I didn’t think of earlier as it allowed me to carry ample propane for full timing in colder climates. Rock solid is the important part, they work exactly as described.




by:

Added the extra support we needed to our 5th wheel bumper to be able to haul our e-bikes.




by:

Used two sets instead of one. Very plea sed.




by:

Etrailer is an awesome business. They get right on your order and keep you updated. The brackets seem to be of good quality and well packed. They literally come with everything, even drill bits. I would recommend!




by:

Just what I needed to strengthen my bum per.


Comments
These support brackets have not had any issues reinforcing the bumper to haul lightweight items like bikes or portable grey water tank. I can’t speak to heavier items than that
Tommy - 07/12/2022


by:

Everything was great. Great prices and support. I just didn’t understand the delay in the actual shipping date. Up front you say it won’t ship for about three or so days. It’s like you hold up the order on purpose. I can understand if you have a certain day of the week you do all your shipping on but f you sell a great deal of merchandise that would be tough to do in a day. I’ll buy from you again though. Thank you very much




by:

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




by:

Directions are perfect, use correct tools, no problems.




by:

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.




by:

Quick delivery, met my expectations completely. I couldn't be happier.




by:

Easy install and great design!




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Happy, think they will work great




by:

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




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




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