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

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

Part Number: MO34VR
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$87.95
Retail:$100.70
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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 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 Bumper Brackets - 4" to 4-1/2" - Qty 2. Accessories and Parts reviews from real customers.
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  • Reviews (205)
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Mount-n-Lock Accessories and Parts - MO34VR

  • 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
  • Universal fit - works with 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
  • 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.



1SNUHD Mount and Lock Safety Struts RV Bumper Brackets - Universal Fit




California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

205 reviews
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.

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See what our Experts say about this Mount-n-Lock Accessories and Parts

  • Recommended RV Bumper Safety Struts For A Trailer With An I-Beam Frame
    If the height of the I-beams is less than 6" as you say then you would have to have to swap out the regular safety struts for the Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets # MO34VR, which include spacers to place the brackets far enough out to clear the flange lip. You would not want to trim the flange of your trailer frame beams. You can place the supports on the inside or the outside of the frame beams as the difference between the two sides really isn't going to...
    view full answer...
  • Best Way to Transport 70 lb E-Bike with Travel Trailer
    The Feedback Sports RAKK XL Bike Floor Stand - Black # 301-17345 doesn't have a weight capacity so it will hold an electric E-Bike up inside a travel trailer. This is designed for a standard storage situation like in a garage where the floor is non-moving though so if you're planning on using this during transit I don't recommend doing so as the unit will bounce around. For your application I recommend installing a hitch on your travel trailer (if it doesn't have one) and using a hitch...
    view full answer...
  • Will Mount n Lock SafetyStruts Fit 2024 Coleman Lantern lT 17R
    Hey Rocky, I would assume the SafetyStruts part # MO34VR would be what you would need. for your 2024 Coleman Lantern. These are universal enough in that they fit basically all popular RV frame sizes. I don't have any info on if running two sets of these would increase capacity but it probably wouldn't hurt...what will you be carrying?
    view full answer...
  • What is The Difference Between The Mount-n-Lock SafetyStruts Universal MO34VR & Standard MO22FR Kit?
    The Mount-n-Lock SafetyStruts Universal Kit # MO34VR includes the Standoff Spacers # MO54VR along with drill bits and the components found in the Standard Kit # MO22FR. The standoff spacers allow for mounting on I-beams shorter than 6".
    view full answer...
  • Are The Support Brackets For RV Bumper Included With The 24x60 etrailer Cargo Carrier # e99049?
    Yes, the Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets # MO34VR are included with the 24x60 etrailer Cargo Carrier for RV Bumper # e99049. The supports are not included in the instructions assembly drawing as it not always able to be used with every bumper and is a separate component. The instructions for both of these are included at the bottom of the page.
    view full answer...
  • Will The SafetyStruts MO34VR Allow For Enough Strength to Carry 130lbs of Bikes on Travel Trailer?
    The Mount-n-Lock SafetyStruts # MO34VR simply add additional strength to the rear bumper on your 2022 Keystone Travel Trailer. To determine if you will be able to then attach a Bike Rack # S94FR using a 2" Receiver # e38HR you will need to contact Keystone. They will be able to tell you how much weight your bumper and frame can support. Do note this bike rack weighs 60lbs and is capable of supporting 2 bikes up to 70lbs each. If Keystone says their bumper is not structurally strong enough...
    view full answer...
  • Can Mount-n-Lock SafetyStruts Be Mounted On The Inside Of The Bumper Frame Beam
    Yes, both the Mount-n-Lock SafetyStruts Standard RV Bumper Support Brackets - 4" to 4-1/2" # MO22FR and Universal # MO34VR can be mounted on either the inside of outside of the frame beams. It's typically easier to mount to the outside since you wouldn't have to get under the trailer, but if you're wanting more of a hidden look it's totally acceptable to mount it on the inside.
    view full answer...
  • What is the Rear Bumper Capacity of a 5th Wheel Trailer and How To Increase It
    In order to determine the capacity of the rear bumper on any fifth wheel trailer you'll need to reach out to the trailer manufacturer as we don't have this information. That said, it's typically around the 200 lb mark. If you need/want more we do have a way to strengthen the rear bumper using the Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets part # MO34VR which increases the capacity to 400 lbs. In order to carry cargo and gear on the bumper, I highly recommend the etrailer...
    view full answer...
  • How Does The Mount-N-Lock SafetyStruts Universal RV Bumper Supports Install?
    Yes, you will use the Mount-n-Lock SafteyStruts Universal RV Bumper Supports # MO34VR to reinforce your bumpers frame on your 2022 Jayco Jay Flight SLX 242BHS Travel Trailer. These brackets will be installed by bolting through your trailers frame, and not the bumper supports. If you're also needing a trailer hitch, the Curt RV Bumper 2" Trailer Hitch Receiver # E-100 will work great, and will fit trailers that have a 4" square channel bumper. This hitch is intended for RV rated accessories,...
    view full answer...
    Image 1 for
  • How to Determine If Swagman RV 2-Bike RV Bumper Mount Rack is Right For Your Application
    Many RV bumper manufacturers construct their product with a plastic cap or a hinged door instead of endcap, allowing bumper to be used for storage; apparently you have this type. Open that end piece to examine if the seam has spot welds (short welds at a number of separate points) or one continuous weld running the full length of the bumper; take note of the thickness of the metal while doing so. Some bumpers, frequently identified as heavy duty, will not have a weld seam at all but are...
    view full answer...
    Image 1 for
  • Are The Support Brackets Needed For A Trailer That Has Its Bumper Welded To The Frame?
    Since your bumper is welded to the frame, it should be very strong and likely won't need to use the support brackets # MO34VR for the 24x60 etrailer Cargo Carrier for RV Bumper # e99049. However, you'll want to verify that the load you're planning on carrying isn't going to overload your bumper. Bumper capacities will vary from each manufacturer, and I recommend contacting the manufacturer for your bumpers maximum weight capacity to ensure you aren't going to overload your bumper. If...
    view full answer...
  • Why is the Flint Hill Goods 30x50 Wheelchair Carrier Not RV Approved
    The ride on the back of a trailer is very rough due to the extended distance from the axle so a lot of hitch mounted accessories like the Flint Hill Goods 30x50 Wheelchair Carrier part # FHG99ZR are not rated for this. Instead, I recommend using the Mount-n-Lock GennyGo Generator and Cargo Carrier for RV Bumpers part # MNT34FR which attaches directly to the rear bumper and you can combine multiple sets for more room. I do recommend beefing up the rear bumper with the Mount-n-Lock SafetyStruts...
    view full answer...
  • Solution For Carrying 2 E-Bikes Weighing 52LBS Each Behind a 2024 Sunset Trailer Travel Trailer
    I do have a recommendation for you Martin which will not involve an Adjustable Width Trailer Hitch Receiver # 13703 like you found. It does appear your 2024 Sunset Trail travel trailer is going to have the 4" rear bumper which we have the Mount-n-Lock SafetyStruts # MO34VR which help to increase the bumper capacity since it will bolt into the structure rather than simply relying on the welds for strength. Then you would be able to use a bolt on Receiver # E-100 in combination with the Swagman...
    view full answer...
  • Bumper-Mounted Reinforcement Support Brackets For RV Bumpers
    The 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 weight capacity to 400lbs.
    view full answer...
  • What Side of Trailer Frame Does Mount-n-Lock SafetyStruts Install
    Normally the Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets # MO34VR install on outsides of trailer frame. I attached an install video for this for you to check out as well.
    view full answer...
  • Can a Trailer Hitch Be Installed on the Rear Bumper of a Heartland North Trail Trailer
    The brackets which hold the rear bumper to the trailer frame are not always up to the task of hauling extra gear. In order to confirm we must recommend reaching out to the trailer manufacturer to see if and how much you can carry. If it's not rated or not high enough for what you need, we offer support brackets which will strength the connection between the bumper and frame. The Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets part # MO34VR is what I recommend. This would...
    view full answer...
  • Installing Mount-n-Lock SafetyStruts to Tube Frame
    From how you're describing your set up, it sounds like your bumper is attached to a tube frame, and there is a way for you to install the support brackets, which are the following part number: - Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets # MO34VR What you'll need to do is drill small holes into the tube frame, and then use the included self-tapping bolts to mount the brackets. I have added cut outs from the instructions which show how the brackets install to a tube...
    view full answer...
    Image 1 for Image 2 for
  • Correct Mount-n-Lock SafetyStruts for 2022 Grand Design Transcend Xplor 321BH
    The answer to your question will depend on your bumper. More than likely the # MO22FR will be the correct part for your Grand Design Transcend Xplor 321BH. If you have a tube frame with a bumper that is 4" - 4-1/2" wide then this will work as extra support for your carrier and generator. You can see this in the attached review video at the 2 minute mark. If you have an I-beam, S-beam, or single channel frame you want the universal # MO34VR instead. If you don't have a carrier already Mount-n-Lock...
    view full answer...
  • Does The Mount N Lock Bumper Hitch Receiver Lock On To Your Bumper
    I talked to one of our install team members about the Mount-n-Lock ShakeStopper for 6" RV Bumpers - 2" Hitch Receiver - 400 lbs # MO64VR. The easiest option would be to replace the Coupling Bolts (shown below, threaded into Coupling Nut) with tamper-resistant bolts (further below). If the coupling bolts can’t be removed, the hitch can’t be removed. You will want a Grade 5 equivalent (120,000 psi tensile strength). Bumper weight capacities vary by manufacturer and by model. Even some of...
    view full answer...
  • Does The etrailer RV Bumper Cargo Carrier Come With The Universal Safety Strut Kit
    The 24x64 etrailer Cargo Carrier for RV Bumper # e83YR is going to come with the Standard Supports # MO22FR. If you have an I-Beam frame that you'll be attaching to then you'll want the Universal Kit # MO34VR instead.
    view full answer...
  • Does the etrailer Cargo Carrier for RV Bumpers Come with Support Brackets
    Yes. The 24x60 etrailer Cargo Carrier for RV Bumper - Steel - Folding - 500 lbs # e99049 comes with the support brackets similar to the Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets - 4" to 4-1/2" # MO34VR. They're not branded from Mount-N-Lock, but they're essentially the same bracket and design.
    view full answer...
  • Are Support Brackets From etrailer Cargo Carrier For RV Bumpers Sold Separately
    Yes, you can absolutely get the support brackets from the etrailer cargo carriers for RV Bumpers # e99049 separately. The correct part number for those support brackets are the following: - Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets # MO34VR
    view full answer...
  • Recommended Trailer Hitch Receiver For Jayco Travel Trailer To Triple Tow Small Utility Trailer
    It sounds like you have the Curt RV Bumper 2" Trailer Hitch Receiver # E-100 installed on your Jayco trailer. If that is the case you can tow with it, but you are correct that the bumper on your trailer is really the weak point. One option is to use the Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets - 4" to 4-1/2" # MO34VR to reinforce your bumper for additional strength. The option I recommend is going with a frame mounted trailer hitch receiver like the Curt Adjustable...
    view full answer...
  • Hauling E-Bikes With The Rear Bumper Of A 2007 Keystone Cougar 276RLS
    Hi George, Most OEM bumpers are typically 4" x 4" so you could just go with the the # MNT72VR instead and add on the Mount-n-Lock SafetyStruts Universal RV Bumper Support Brackets # MO34VR to increase the capacity of the OEM bumper to 400lbs. If that's not what you're wanting to do then yes, you could install both the ShakeStopper # MNT82VR and one of the 5.3" Heavy Haul'r bumpers to increase your capacity to haul some e-bikes: Mill Finish # MNT88VR Brushed Finish # MNT33VR Glossy...
    view full answer...


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Info for this part was:

Employee Mike L
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Employee Jameson C
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Employee Andrew K
Video by:
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Employee Jeff D
Installed by:
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Employee Zach D
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Employee Joshua S
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