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Mount-n-Lock Heavy-Haul'r Standard Duty Replacement RV Bumper - 6.0" - 660 lbs - Black
Mount-n-Lock

Mount-n-Lock Heavy-Haul'r Standard Duty Replacement RV Bumper - 6.0" - 660 lbs - Black

Part Number: MNT73VR
In Stock
$699.95
Retail:$801.44
You Save: $101.49
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Wish your stock RV bumper could support more gear? We do too! That's why we love that this aluminum bumper increases your weight rating so you can throw a few extra bags onto the back of your RV for your long weekend trip to the campground. 1-800-940-8924 to order Mount-n-Lock accessories and parts part number MNT73VR or order online at etrailer.com. Free expert support on all Mount-n-Lock products. Great prices and Fastest Shipping for Mount-n-Lock Heavy-Haul'r Standard Duty Replacement RV Bumper - 6.0" - 660 lbs - Black. Accessories and Parts reviews from real customers.
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  • Reviews (38)
  • Q & A (0)
  • Videos (1)
  • Photos

Mount-n-Lock Accessories and Parts - MNT73VR

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

Wish your stock RV bumper could support more gear? We do too! That's why we love that this aluminum bumper increases your weight rating so you can throw a few extra bags onto the back of your RV for your long weekend trip to the campground.


Features:

  • Standard-duty RV bumper kit increases your weight rating for highway driving
    • Great for cargo carriers, bike racks, and other bumper-mounted accessories
    • Less likely to lead to bumper detachment than a stock bumper with the same weight
  • Roomy, hollow compartment stores your wet, smelly sewer hoses and fittings
    • Vented end plates circulate fresh air to prevent moisture and mold build-up
  • Rustproof, lightweight aluminum has a sleek, glossy black powder-coat finish
  • Bolt-on installation onto your RV's frame with included 10 brackets and hardware
    • Some drilling required - does not need any welding or painting
  • Optional accessories (sold separately) make it easier to install and use the bumper
    • AddaBumper plates help the bumper clear frame obstructions during installation
    • SafetyStruts brackets increase the weight capacity for hauling more gear
    • Adapter brackets let you mount different sized accessories like a cargo carrier or bike rack
  • Made in the USA


Specs:

  • Application: I-beam, S-beam, tube, and channel frames
    • Flanged frames: must be at least 4" tall x 3" long
    • Non-flanged frames: must be at least 3" tall x 3" long
  • Overall bumper dimensions: 92" long x 6" wide x 6" tall
  • Maximum capacity: 660 lbs when evenly distributed
  • Weight: 42 lbs
  • Limited lifetime warranty


Worried that your existing steel RV bumper won't be able to support the weight of an extra, larger cooler? Well, you're in luck! This glossy black aluminum bumper is sleeker and stronger than your stock bumper, and it boasts a higher weight rating so you can haul a couple of heavier bags to the campsite. 10 Standard-duty brackets reinforce the bumper, giving you peace of mind that your gear won't detach from your RV on the highway.


Stores Your Sewer Hoses and Fittings


Mount-n-Lock Replacement RV Bumper Ventilated Compartment

If you don't want to muck up the inside of your RV's cargo compartment, you can use the ventilated storage area inside the bumper to hide your smelly sewer hoses and fittings. The end plates on either side have small, built-in holes that help circulate fresh air to help prevent moisture and mold from building up on your wet hoses. And by keeping your sewer gear in the bumper, you'll free up space in your RV storage compartment for additional camping gear. When it's time to dump your black and gray tanks, slide the end plate up to easily grab your hoses.



10HBK92GB Mount and Lock Heavy Hauler Standard Duty RV Rear Bumper Replacement Kit - 660 lbs - Glossy Black Aluminum





Video of Mount-n-Lock Heavy-Haul'r Standard Duty Replacement RV Bumper - 6.0" - 660 lbs - Black
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Breaking Down the Mount-n-Lock Heavy-Haul'r Replacement RV Bumper

Hello everybody, this is Jeff at etrailer.com. Today we're gonna take a look at this Mount-n-Lock Heavy Hauler, 92 inch long aluminum RV replacement bumper with the glossy black finish. Has a 600 pound weight capacity. Now this complete bumper kit will let you add a bumper or replace your stock RV bumper to give you extra durability and a higher weight rating. Now this heavy duty aluminum bumper gives you a higher hate weight rating so that you can safely haul your bikes or generator to a campsite. Does have a 600 pound maximum capacity when it's evenly distributed.

It is also great for supporting cargo carriers and other bumper-mounted accessories and it does install using these 10 heavy duty brackets. Basically, there's five on each side here and you can see we've pre-installed them just to show you what they would look like when you go to install it. I want to zoom in and show you these. These basically will clamp around the bumper and they reinforce the bumper to prevent heavy loads from damaging it. Right here is where you bolt it to your frame and then you can see this little clamp around the bumper.

This is less likely to lead to the bumper detachment than a stock bumper with the same weight. Now also, if you want to add a two inch hitch to this, you will need part number MO64VR, that's designed to clamp around this bumper and give you a two inch hitch. We do sell that separately and just wanna pop up an insert to show you what that hitch would look like. You can see how it clamps around the same bumper. And again, it's usually listed on this product page as a related product.

Another nice feature on this is this bumper is actually hollow inside. This hollow compartment right here, you can see it has vented end plates on both ends, so you can put your smelly sewer hoses and fittings in here. And because they're vented, these vents will circulate fresh air to help prevent moisture and mold buildup. And the way you install it, you slide open these side plates out of the way, put your hose in there, put your fittings in there, whatever gets in there and then just to hold them into place, slide your plate right back down in there. Now this is a rustproof lightweight aluminum construction.

You can see it has a nice glossy black finish to it and this glossy black powder coat finish has a mirror-like finish, protects against scratches. Now you can also get this bumper in a brushed finished, which will be shiny. It hides scratches, but it will hold dirt, since it will have a rough surface to it. And they also make this in just a plain raw-mill finish, that'll show scratches in discolorations. Now this is a bolt-on installation onto RV's frame. Comes with the included hardware right here. Now there is some drilling required to install this. Couple notes, if the RV frame is shorter than your RV's body, you will need the extension plates, which we sell separately, part number MO24VR. And if your RV's body extends to the bottom of the frame, you'll need the drop plates, part number MO84VR. Both of those items we do sell separately and they're listed on this product page. This part is made in the USA. Application, this will fit I-beam, S-beam, tube and channel frames. Now if it's flange frames, they must be at least four inches tall, three inches long. If it's a non-flange frame, they must be three inches tall by three inches long. Dimensions on the bumper itself, the length from one end to the other end is 92 inches. The width on it is gonna be six inches wide by six inches tall. And the weight on this bumper's about 42 pounds. But that should do it for the review on the Mount-n-Lock Heavy Hauler, 92 inch long aluminum RV replacement bumper with the glossy black finish.

Ratings & Reviews

4.5

38 reviews
5 Stars
(27)
4 Stars
(8)
3 Stars
(1)
2 Stars
(0)
1 Star
(2)
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by:
Jenny N. profile picture
Etrailer Expert

Jenny N.

7/3/2023

I hate to see the low star with no information as to what happened. Please let me know how I can help.

by:
The Bumper was great.It went on without any problems. I had only two issues. One of the removal end plates is bent and stuck inside the bumper It needs to be damaged further to get it out. The other is that it takes quite a bit of effort to get the blue painters tape off.
by:
Exactly as advertised. Materially superior to the original. Professional and competent technical service from Noah. Installation was a breeze. One day project and I can actually use the bumper tube to store the car waste hoses.
by:
I think I need longer brackets. Are the Heavy Duty or Med Duty longer? I need at least 3in longer, to match frame holes in E350 RV frame.
Mike L. profile picture
Etrailer Expert

Mike L.

4/1/2026

The # MO24VR extension plates would be your best bet, they're 10-11/16 inches long.

by:
Love the product and the ability to safely handle more cargo such as our 4 bike carrier. My only qualm is if you have a Camco Rhino waste hose you will have to use your old end cover instead of the stock ends that come with the unit. The little screws that hold the metal pieces in place are in the way and the hose will not go in.
Jesse profile picture

Jesse

8/28/2024

Rock solid! I carry 4 bikes, a 35 gallon waste tank and spare tire.

by:
Very good quality. Not as easy to mount, but it is solid and stronger than original. Finish is very good.
by:
Great product and sturdy design. Installation was not straight forward as the instructions suggest, but a lifetime of handy work allowed me to finish.
Scott profile picture

Scott

8/19/2025

Amazing product, it may cost more, but it would be nice if the trailer manufacturers use these to start with. They know their clients are going be carrying a lot of weight on their bumpers. Great option!!!

by:
Great product. I used different bolts to attach to the camper.
by:
Went together just as advertised
by:
Product quality is very good and powder coating was well done. My issue is with the shipment packaging. Although there was an attempt to protect the product in transit it did in fact fail. I recommend the shipper place reinforced cardboard on all four corners from top to bottom and also add reinforced cardboard at each end of the bumper. The shrink wrap was an attempt but didn’t prevent the scratches and dents. After spending nearly $[XX] for the bumper I would say an additional $[XX] spent in proper packaging would eliminate any returns. See pictures.
by:
It is a beast. Took some work to get the factory bumper off. I called Josh for help and he did. I was trying to save the factory bumper. After talking to Josh I just cut it off and then it went smooth. To many factory welds you can't get to. The heavy hauler went right on after. Looks great.
by:
Everything is was promised
by:
This is an impressive bumper. We ordered this to be delivered to a RV park in FL after our original 4” bumper twisted & broke the welds on our trip down from the weight of our mountain bikes (~ 200 lb total).
We went with a 5.3” replacement to make it easier to insert our sewer hoses & adapters. My husband & neighbor put the new bumper on in 2 h; it did require drilling new holes in the frame but that was easy enough & well worth it. This bumper is exceptionally strong, has a great finish and has a much better solution for closing the ends than your typical end caps. We also bought the 2” Shake-Stopper Hitch Receiver and it mounted in about 20 min. It is super strong and as advertised - it makes a very solid connection with the bumper. Highly recommend both
by:
The products I bought came a little earlier than originally stated, and that was great. Unpacking the products was a big pain in the a. However, every thing was in good shape. My main complaint that gives the 4 stars is I ordered a 4 inch bumper to replace my old 4 inch bumper, but with the slide gates on the ends (which looked like a great idea) my 4 inch dump hose won't slide in past the slide gates. Customer service says I'd have to have a 3 inch hose or buy a bigger bumper. That was not an issue I saw while shopping for the bumper. In fact, the little video showed tipping the slide gate to the side and easily sliding the hose inside. Nope! It never said anything about a smaller hose. I'm going to have to take off the screw in the slide gate on one end of the bumper and remove the gate every time I want my hose. I hope it won't bounce out while I am traveling. If it does I'll go back to a rubber cap, rats!
by:
Works great, tested with tow hitch ebike holder.
by:
Heavy duty quality metal. Came well packaged. Great instructions with photos. Clever engineering.
by:
Fast shipping and great packaging.
by:
It was easy to install with the adapter. Looks great
by:
Satisfied & would by again. The original bumper on my 27-foot Freedom Express travel trailer failed when I mounted a lightweight bicycle rack on it. I replaced it with this Heavy-Haul'r bumper. This has worked well. No problem at all now carrying my bicycles. I also use it to carry a equipment rack with an auxiliary generator and gas can. I usually run the generator from the carry rack attached to the Heavy-Haul'r bumper. A bit slow installing with some frame drilling on my camper required but works great once installed.
by:
Both products failed with a 4-bike rack rated for RV use the first time I used it.
Brooke M. profile picture
Etrailer Expert

Brooke M.

9/15/2023

Oh no! I am so sorry to hear that. Do you know the make and model of the bike rack you used?

Edward profile picture

Edward

9/15/2023

@BrookeM Yakima Stage Two
Brooke M. profile picture
Etrailer Expert

Brooke M.

9/15/2023

@Edward It looks like the Mount-N-Lock hitch used, part # MNT47FR, was over loaded. The platform of the rack runs from sixteen inches to sixty six inches, putting the center of the load for the carrier platform at forty one inches out, or roughly three and a half feet. The rack itself is probably ninety percent of the one hundred eight pound carrier weight, or ninety seven pounds. So, ninety seven pounds times three and a half feet puts the empty carrier at three hundred forty pound feet, or forty pound feet greater than the rated capacity of the MNT47FR hitch...before the bikes are even added! Unfortunately, the hitch was simply overloaded. If there is a silver lining, at least your rack and bikes werent lost!
by:
Not as easy to install as I thought. Looks great though.
by:
Vast improvement over the stock bumper that was on there
by:
Jeff profile picture

Jeff

4/15/2024

Brackets need to curve up bumper scrapes when pulling into raised driveways etc.

by:
Product arrived quickly, and was packaged extremely well! Installed and SOLID!
by:
I received the new bumper right on time.
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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Mary K
Written by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Amanda M
Edited by:
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