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Roadmaster Dual Hitch Receiver Adapter, 4" Drop/Rise

Roadmaster Dual Hitch Receiver Adapter, 4" Drop/Rise

Item # RM-077-4
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RM-077-4 - Fits 2 Inch Hitch Roadmaster Tow Bar
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Add a bike carrier or cargo carrier with the dual hitch receiver. Call 800-298-1624 to order Roadmaster accessories and parts part number RM-077-4 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster Dual Hitch Receiver Adapter, 4" Drop/Rise. Accessories and Parts reviews from real customers.
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  • Reviews (171)
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Roadmaster Accessories and Parts - RM-077-4

  • Tow Bar
  • Hitch Adapter
  • Dual Hitch Adapter
  • Roadmaster
  • 4 Inch Rise/Drop
  • Fits 2 Inch Hitch

Add a bike carrier or cargo carrier with the dual hitch receiver.


Features:

  • Allows you to use a hitch-mounted bike rack or cargo carrier while towing your vehicle
  • Constructed of sturdy steel
  • Resists rust and corrosion with durable powder coat finish
  • Requires pin and clip or hitch lock (sold separately)


Specs:

  • Application: 2" x 2" trailer hitches
    • Dual receivers have 2" x 2" openings
  • Gross towing weight: 10,000 lbs
  • Tongue weight: 400 lbs
  • Limited lifetime warranty


Dimensions of Dual Hitch Receiver

Notes:

  • Not for use when towing a trailer.
  • Reduces the tongue weight capacity of your hitch by 50 percent.


077-4 Roadmaster Dual Hitch Receiver Adapter, 4" Drop/Rise

Installation Details RM-077-4 Installation instructions



Video of Roadmaster Dual Hitch Receiver Adapter, 4" Drop/Rise

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




Video Transcript for Roadmaster Dual Hitch Receiver Adapter Review

Speaker 1: Today we're going to be taking a look at the Roadmaster line of dual hitch receiver adapters. Most motor homes are going to have a hitch on the back, and it's going to come in handy whenever we've got to flat tow our vehicle. But another problem arises. Once we hook it up and we have our tow bar in place, where are we going to put our bikes We don't want to take up any more room than we have to on the inside, and putting a bike inside our vehicle can be a problem, as well. That's where our Roadmaster Dual Hitch Adapter's going to come into play. Now, this can be either in the rise or drop position.

Our Roadmaster series of dual hitch adapters are going to fit into a 2" by 2" receiver tube opening, so they'll fit your RVs that have a 2" hitch on it. And they're also going to provide us with two more receiver tube openings, that way we can carry a bike rack or a cargo carrier while flat towing our vehicle.Each one in the line is going to have a 400 lbs tongue weight, along with a 10,000 lbs gross trailer weight rating. So we did put our hitch adapter in the rise position, so we put that 4" on top, but since it does provide us with that 2" rise or drop on the other side, it dropped it down 2", which made it almost perfectly level. Making sure your flat tow set up is nice and level is always important because we don't want any extra stress, either on our front suspension of our car or pulling down on the hitch on our motor home, that way we have a nice even pulling weight when we're going down the road.Now, each one of our Roadmaster dual hitch adapters is going to provide you with a 2" drop or rise on one end, and on the other end it will have varying height differences, depending on which one you pick up.

There's going to be several different sizes available: 2-1/4" rise or drop, a 4" rise or drop, there's going to be a 6" rise and drop, and also an 8" rise or drop. So we'll go ahead and show you how to measure for the appropriate rise or drop for your flat tow set up.Most tow bar manufacturers are going to want no more than a 3" difference between the connection point of the motor home and the connection point of the car, so you want to try to get it as level as you can. The way we're going to measure, is you want to make sure that your motor home is on nice, flat, level ground, and that if you do have air suspension, make sure it's aired up at the traveling height. Then we're going to take a tape measurer, and we're going to measure from the ground just right to the inside top edge of the receiver tube opening, and in our case, it's just a little bit over 22-1/2". Now we can move over to the car side.Now again, on the car, you want to make sure that it's on nice, level ground, and we'll go ahead and park it.

This time we're going to be measuring right to the center of where our tow bar is going to attach at. So here you can see it's just under about 19-1/2", so we're right at that 3" difference, maybe a tiny bit over. So in our case, since the car connection point is lower, we're going to need a drop, but if yours was higher, you would get a rise. So there is that 3" difference there, so we're going to need anywhere up to a 3" drop to make it nice and level.And in our case, we're going to put it in the rise position, so we can just slide the shank into the receiver tube and line up the pin holes. Now, our dual hitch adapter does not come with a hitch pin, but you can pick those up here at etrailer.com, as well as any locks if you'd like to purchase those.

It is going to accept a standard 5/8" pin and clip, so we can just put it in and much sure everything's secure, and then we can load our bikes up. So now that we have our bikes hooked up, we have a spot down here below that we can hook our tow bar up to, so we'll go ahead and do that now as well.So as you can see, we have our bikes loaded up, as well as the tow bar being hooked up to our car, that way we can take our bikes with us and we can hit the road and start our adventure. And that'll finish up your look at the Roadmaster line of dual hitch receiver adapters.


Customer Reviews

Roadmaster Dual Hitch Receiver Adapter, 4" Drop/Rise - RM-077-4

Average Customer Rating:  4.9 out of 5 stars   (171 Customer Reviews)

Add a bike carrier or cargo carrier with the dual hitch receiver.

- RM-077-4
by:

I bought the dual hitch to allow me to carry my bike rack at the same time be able to leave my tow hitch attached. It works great!


Comments
Excellent option to add a bicycle rack when towing. Easy to use. Well made. I highly recommend.
Ed - 07/03/2021


- RM-077-4
by:

Wanted to be able to combine tow hitch and bike hitch. This required a 2" drop and a 4" rise with a 10K lb capability. Etrailer.com came thru with product, price, special free shipping, and great customer service. Ordered on Sun and received on Wed and installed on Thur and ready to go!


Comments
After 1 year this product is still working as day 1.
John O - 03/31/2015



- RM-077-4
by:

Exactly what we need to bring our bikes camping with us; the bike hitch now rides safely between the RV and the towed vehicle.


Comments
still happy with this bike rack, easy to install and easy to loadunload the bikes.
Diane W - 01/16/2021


- RM-077-4
by:

Very good quality and works great. Just what I needed to haul my bikes while flat towing my Jeep.



- RM-077-4
by:

For my toad needed an extension for a 4" drop and a connection for a bike rack. No one locally had what needed. etrailer had the exact item I needed to haul my toad and bike rack on motor home for the rated capacity I needed. Quality built product. Delivered product exactly as shown on web site.


Comments
E-trailer gets it right. After a year. No issues. Dont just buy, call and they can get you the right product for your application.
Mr. G - 08/24/2020


- RM-077-4
by:

Excellent Hitch heavy duties the 6 inch spread etrailer service was fantastic



- RM-077-4
by:

I purchased this to easily switch between a small trailer and a hitch-mounted tray for my Jeep. The tray needed to be mounted lower in order to still allow for the tailgate to be opened. This product fit my needs perfectly.


Comments
Exactly as expected!
Frank S - 07/28/2020


- RM-077-4
by:

Bought this to use a bike rack along with my toad. Nicely made except that the inside corners in the two receiver tubes are too rounded. My bike rack "stinger" wouldn't fit in the receiver until I ground down the edges on all four outside corners of the stinger.


Comments
Thank you for your review. It is okay to file away some imperfections on the receiver but I would not condone grinding down your bike rack or any other applications because it might make the application fail or will not be covered by warranty.
-- Etrailer Expert Sierra K - 02/25/2021


- RM-077-4
by:

Meaty and does the job. With an additional 1-1/2" drop built into my Demco Commander II tow bar, it's a perfect fit to hitch my 2021 Jeep Wrangler to my 2020 Winnebago View. I haven't tried it yet, but I'm hoping to be able to fit a bike rack between the two vehicles.



- RM-077-4
by:

Received my 4 inch hitch adapter almost two weeks ago. Finally had the time to install and test it on my RV. The adapter fits great and the welds look very well done. The 4 inch drop along with my blue ox’s 4 inch drop are the perfect combination for my tow package. I plan to add a new bicycle carrier in the near future and this adapter was chosen with that in mind.


Comments
1 year usage and still great purchase for towing my Mini Cooper. I love the versatility of adding my bike carrier in front of the toad vice being on back of towed car.
James - 02/17/2020



- RM-077-4
by:

Reasonable shipping time on my drop hitch. The quality seems heavy and strong. Works perfectly for my needs, allows me to tow car behind coach and carry bike rack at same time. Very happy with this product and recommend purchasing from Etrailer.


Comments
hitch is working great and my opinion is the same now as it was a year ago.
William - 04/17/2020


- RM-077-4
by:

Our new double 10000lbs rating receiver is perfect on our class a. Now can 4wheel down tow our Honda crv and put our bike carrier on the same receiver with plenty of clearance for the sharpest of turns. Very well made nice piece of equipment. Great service and with pin purchase and receiver, free shipping.


Comments
works great. use it all the time to haul our bikes and tow a car with our rv
jeff - 01/25/2020



- RM-077-4
by:

Product has worked great. I use it to tow a vehicle behind my Motorhome on the lower hitch and carry two heavy electric bikes on a bike carrier on the top hitch. I have put more than 15000 miles on it so far without any issues.


Comments
Still working perfectly after more than 20K miles and more than a year on the road
Leo S - 03/12/2020



- RM-077-4
by:

Excellent, pulled the toad and attached the bike rack to the RV perfectly. Great product, but better customer care and relationships


Comments
Excellent product!! Works as advertised.
Mark - 06/01/2020


- RM-077-4
by:

The item came quickly, within a week. Very well constructed.


Comments
I’ve been using the Roadmaster dual hitch and it’s preforming flawless. The construction of this product is great and I look forward to may more years use.
Frank L - 08/16/2021


- RM-077-4
by:

Needed a drop hitch for the Falcon 2 tow bar to get within the specified 3" variance off level as specified by Roadmaster. Also, we wanted to have the second receiver for a hitch mounted bike carrier. Problems solved! Thanks etrailer!


Comments
Still performing and doing the job of bicycle hitch and hitch for the Falcon II tow bar.
Jim M - 08/23/2018



- RM-077-4
by:

We have relied on the staff at etrailer to fit out our class C RV for towing needs. Invaluable help in choosing the right components and answering questions about installation and use. We appreciate Greg & Christina for their personal touch and professionalism.



- RM-077-4
by:

Wow is this heavy duty. Perfect for my needs, except that the insert is solid steel so I can’t add an internal hitch silencer. The solid insert does give me reason to believe this will last forever as it can’t bend



- RM-077-4
by:

I needed this heavy duty unit to attach my tow set up for my jeep behind my motor home and needed the 4" drop. The 2nd receiver I use for my bike rack. Works great !


Comments
THE PRODUCTS WORKS AS DESIGNED. i STILL USE IT IN THE APPLICATION ABOVE . WORKS GREAT!
Raymond - 04/10/2019



- RM-077-4
by:

Been tested for over 5,000 miles and holds up great! It's rated for 10,000 pounds and I pull at most 5,000 pound fully loaded Jeep so I should never have a problem with this. I can also use the second hitch for a light cargo box since the 2 door Jeep does not allow for all my storage needs.



- RM-077-4
by:

Received the product and was not really happy with it. Was only able to get my blue ox tow bar in there with great difficulty by using a lot of lube and a hammer. When I tested it it was a bit to low (was using the 2" drop for the blue ox and wanted to use the 4" raise for my bikes) Getting it out was even more difficult and the only way to do was by connecting the car to the towbar and pulling it out. The fit in my RV was quite loose with a lot of wiggle room. Need to use some stems to fit it right. Not using the product and not happy with the service since I wrote about the problems but never got any answers.



- RM-077-4
by:

I bought 4"/2" drop/rise receiver adapter( RM-077-4) and 2 stainless steel locking hitch pins. I needed the 4" drop to line up our "toad" behind our motor home. This device with the 2" rise solved the problem of, "Where do I hang the bike rack?" and saved me from having to install a hitch on the towed vehicle for that purpose. The adapter and pins were shipped for free and we saved considerably over what we would pay at a nearby major RV retail store. The quality of the locking pins speak for themselves in one word "STAINLESS". I wish they offered a similar quality pin in a side locking model instead of the end locking style. I would definitely replace the so called chrome one I have for the receiver on the coach.



- RM-077-4
by:

Excellent service from etrailer.com ! I just recieved the Roadmaster drop/rise bar & Roadmaster Quiet Hitch items. Very well packaged, and delivered in a timely fashion. I'll be installing the items on the motorcoach this week. Top quality items at great prices, and excellent service. I'll try to post a pic of everything that I purchased, in use, in the near future. The etrailer.com videos are very helpful, as well as the answers to their FAQs. Tom from Bossier City, La.



- RM-077-4
by:

Not only is this the best and safest product (rated @ 10,000 lbs) to tow my vehicle with bicycles attached but Gwendolyn Y our sales rep was phenomenal! She was very knowledgeable on her products and recommended all the accessories I needed. All was delivered promptly. Installation was a breeze. Thanks Gwen!


Comments
Still hanging tough!
Oscar - 09/25/2019



- RM-077-4
by:

Outstanding quality product. We attached a tow bar to the bottom to tow our Jeep and on top have a bike rack. Excellent desi.


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Show More Reviews

Ask the Experts about this Roadmaster Accessories and Parts

  • How To Carry a Bike on the Back of a Motor Home While Flat-Towing
    In order to carry bikes on the back of your motor home while also towing your 2019 Honda Fit you will first need a dual hitch adapter which I have attached a list of options for your below. Roadmaster Dual Hitch Receiver Adapter (4" Rise/Drop) - part # RM-077-4 Roadmaster Dual Hitch Receiver Adapter (6" Rise/Drop) - part # RM-077-6 Roadmaster Dual Hitch Receiver Adapter (8" Rise/Drop) - part # RM-077-8 In order to determine which is correct for your setup you will need to do a...
    view full answer...
    Image 1 for
  • How Level Does a Tow Bar Have to be When Flat Towing Vehicle
    I attached a picture that shows the height difference range that's acceptable for a tow bar. Basically it needs to be between 3 inches above or below level and you're good. The part # RM-077-4 that you referenced can do a 4 inch rise/drop. The Blue Ox Alpha part # BX7380 that you referenced can have the arms spaced between 16 and 36 inches.
    view full answer...
    Image 1 for
  • Recommendation To Allow Towing With Weight Distribution System and Use Bike Rack
    The Roadmaster Dual Hitch Receiver Adapter, 4" Drop/Rise # RM-077-4 is rated for up to 10,000 lbs towing, but only 400 lbs tongue weight and is only intended for flat towing. The manufacturer notes this should not be used for towing. There isn't a dual hitch adapter that is compatible with a weight distribution hitch, but there is a ball mount that is rated for this use and can use a cargo carrier or bike rack at the same time. I recommend the Gen-Y Adjustable 2-Ball Mount w/ Stacked...
    view full answer...
  • Using Dual Hitch Adapter to Transport 2 e-Bikes and Tow Trailer Behind RV
    We do have similar adapters that might work for your application but the Roadmaster Dual Hitch Receiver # RM-077-4 that you referenced cannot be used to tow a trailer. This particular unit can only be used for flat towing another vehicle. For a dual hitch adapter with the same weight capacity that can be used to tow a trailer I recommend the Malone # MPG544. This features a 4,000 pound towing capacity and a 400 pound tongue weight limit. You will need to make sure the combined tongue...
    view full answer...
  • Solution for Carrying Hitch Bike Rack and Flat Towing Vehicle
    Roadmaster makes the dual hitch adapter part # RM-077-4 which gives you two hitch openings. The one on the top for carrying a bike rack and the one below for flat towing a vehicle. I attached a picture of the adapter being used on an RV like yours with a tow bar and bike rack installed. For a bike rack you'll need an RV approved bike rack like the Swagman Dispatch part # S44FR which would be a great solution.
    view full answer...
    Image 1 for
  • Can the Roadmaster Dual Hitch Receiver Be Used to Tow a Trailer and Carry Bike On a Bike Rack
    The Roadmaster Dual Hitch Receivers, like the # RM-077-4 that you referenced, are not designed for use with any type of trailer. They are designed for use with tow bars only. I recommend installing a hitch on the back of your RV. If your RV has a 4 x 4 inch continuous-welded steel bumper, you could use the RV Bumper 2 inch Trailer Hitch Receiver, item # S64025, along with a bike rack that is designed for use behind an RV. The Swagman Dispatch Bike Rack, item # S44FR, would be a good...
    view full answer...
  • Are Longer Safety Cables Required When Using the Dual Hitch Receiver Adapter # RM-077-4
    The addition of a dual hitch receiver adapter like part # RM-077-4 may require longer safety cables, but that will depend on the length of your current safety cables. This adapter will add 10-1/4 inches between the tow vehicle and the towed vehicle. If your current cables will not stretch an additional 10-1/4 inches, you can use the Roadmaster 10 Inch Safety Cable Extension, # RM-650648-10. You will need two of these extensions. If you have not purchased safety cables yet, I recommend...
    view full answer...
  • Options for Carrying Bike Rack and Cargo Carrier at Same Time
    Basically there are two option, but we really don't have a great solution to allow you to carry a cargo carrier plus the Curt bike rack you have. You could look into a roof cargo basket like the Rola part # 59504 but this requires your vehicle to have a roof rack with crossbars installed. Or you could go the Hollywood Racks bike rack and cargo carrier route with part # HR1400Z-85-FB like you mentioned. If you wanted to go the roof rack option but you don't have a roof rack on your...
    view full answer...
  • Availability of Dual Hitch Receiver with 6 Inch Rise
    For a very similar product to the Roadmaster Dual Hitch Receiver Adapter # RM-077-4 you referenced, but that features the kind of rise you are needing, I recommend the MaxxTow Dual Hitch Extender # MT70070. This extender will provide you with two 2 inch receiver openings, with the top one offering a 6-1/4 inch rise. It has a distance of 12 inches from the center of the shank hitch pin hole to the center of the receiver hitch pin hole. It does have a 4,000 pounds weight capacity, which is...
    view full answer...
  • Bike Rack Recommendation for an RV Flat Towing a Honda Fit
    The best option I could recommend for you would be to get a shank mounted bike rack that you could attach to the 6 inch drop adapter you currently have. This would not require the use of an additional adapter that would reduce capacity and would also allow you to tow your setup at it's current height. For a bike rack you would want the Swagman Traveler XCS Bike Rack part # S64664. Check out the review video I attached.
    view full answer...
  • Can the Roadmaster Dual Hitch Adapter Be Used to Flat Tow a Vehicle and a Hitch carrier
    Yes, you can use this Roadmaster Dual Hitch Receiver Adapter # RM-077-4 to use a tow bar to flat tow a vehicle and then simultaneously carry a hitch accessory like a bike rack or cargo carrier on the top hitch opening. Check out the picture I attached that shows a tow bar and a bike rack being used with a # RM-077-4 on the back of an RV. You should not have a problem unhooking the tow vehicle if there was a carrier above it either. I attached an FAQ article on flat towing for you...
    view full answer...
    Image 1 for
  • How to Tow a Boat and Carry a 300 lb Scooter with a 2001 Chevy 1500 Silverado
    The best solution I have for you would be to install a front mount hitch on your 2001 Chevy 1500 and then use a motorcycle carrier to carry the 300 lb scooter. If you have a light duty 1500 you would want the # 31302, if you have an HD 1500 you would want the # 31108 hitch. Both of these hitches have a tongue weight rating of 500 lbs so they would have the capacity for your scooter. Then for a carrier you could use to carry the scooter you would want the Ultra Fab Carrier part # UF48-97903...
    view full answer...
  • Solution for Carrying Bike Rack While Towing a Trailer
    I think I have an ideal solution for you. Instead of installing your bike rack into a dual ball mount like the part # RM-077-4 I think you would be best served with the # CC-275. This product will install on the frame rails of your trailer and will allow you to carry a bike rack up on the frame of the trailer. This will allow you to use the ball mount you have that allows you to tow your trailer level and still carry the bike rack. Check out the review video I attached for more info.
    view full answer...
  • Solution for Using Tow Dolly and Hitch-Mounted Bike Rack Behind RV
    We have actually reached out to Roadmaster and verified that the Dual Hitch Receiver # RM-077-4 can indeed be used with a tow dolly. As long as you stay under it's 400 pound tongue weight capacity this is a perfect solution for you. I have attached a short video review below that you can check out as well.
    view full answer...
  • High Low Adapter for Flat Towing 2019 Honda Civic SI that Needs 7 inches of Drop
    We have an adapter that fits your needs exactly with the Blue Ox part # BX88241. This was designed for flat towing applications like yours where 7 inches of drop is needed to allow the tow bar to set as level as possible. This will not reduce the weight capacity of your trailer hitch in any way either. I also attached a help article link that covers picking out the correct high/low adapter as well.
    view full answer...
  • Can You Tow a Trailer and Carry a Bike Rack With the RM 077 4 Roadmaster Dual Hitch Receiver
    The RM-077-4 is not for use with any type of trailer - tow bars only. You could use this to carry a bike rack and tow a vehicle behind a motorhome. We do have a receiver mounted Trailer Hitch Ball mount with 2" Receiver for Bike Racks or Cargo Carriers, part number D210. Using this ball mount with adapter you can tow a trailer and carry a bike rack as long as you stay within the tongue weight capacity and gross weight capacity of the ball mount, ball, hitch and vehicle.
    view full answer...
  • Hitch Lock & Anti-Rattle For Roadmaster Dual Hitch Adapter RM-077-4
    There is a hitch lock as well as an anti-rattle device available for your Roadmaster Dual Hitch Receiver Adapter # RM-077-4 but because it has a solid shank, there isn't an anti-rattle hitch lock, as solid shanks prevent the use of an anti-rattle lock. So you will need to get the lock and anti-rattle separately, and this will serve the same function of locking the adapter and preventing rattle; what you will need is the following: - etrailer Trailer Hitch Receiver Lock # e98880 -...
    view full answer...
  • RV Rated Spare Tire Bike Rack Recommendation for an Aliner Camper Trailer
    There are no spare tire bike racks rated for an RV or camper spare tire. However, if your Aliner's bumper is rated for towing and/or carrying weight, we offer several bike rack options that are rated for use behind a camper. Take a look at the Swagman Around the Spare Mighty Rack, # S80501. This rack is designed to fit a 4 to 4-1/2 inch continuous welded square bumper and fit around the spare tire. I have included a link to the installation details and a video review for reference. Another...
    view full answer...
  • Potential Interference w/Toad and Cargo Carrier when Turning Using Roadmaster Dual Hitch Receiver
    Whether or not there will be interference when using a cargo carrier in the Roadmaster dual receiver # RM-077-4 depends on several factors. The size of the carrier, the length of the tow bar, the height and width of the vehicle all play a role in determining interference. If the cargo carrier has a rise in the shank that could raise it higher than the front end of the vehicle and there would be no interference. The only way to know for sure is to test it. The adapter is going to...
    view full answer...
  • Carrying Bikes at the Back of an RV While Towing a Car on a Tow Dolly at the Same Time
    There are a couple of hurdles to overcome in order to be able to carry bikes while using a tow dolly at the same time. First there is the drop issue. The most amount of drop from an adapter that we have is 10-1/4 inches, # RM-048-10, which will still work even if it doesn't quite get down to 12 inches. There aren't any dual receivers that you can use that will also have enough drop and work with a tow dolly. So what I propose is to use the above 10-1/4 drop adapter with a different kind...
    view full answer...
  • Can the Roadmaster Dual Hitch Receiver Adapter Be Used With a Bike Rack and Cargo Carrier
    The Roadmaster Dual Hitch Receiver Adapters like part # RM-077-4 can be used for both a bike rack and cargo carrier and you can also use them inverted (rise/drop position). The Roadmaster Dual Hitch Receiver Adapters are also offered in a few other options which I have attached for you below. If this does not answer your question then please just let me know. Roadmaster Dual Hitch Receiver Adapter part # RM-077-2 (2-1/4" Rise/Drop) Roadmaster Dual Hitch Receiver Adapter part # RM-077-6...
    view full answer...
  • Cargo Carrier/Bike Rack Combo Recommendation
    I have a solution for you, but the # RM-077-4 that you referenced is not designed for what you are trying to do so I cannot recommend it for you. Also, there wouldn't be enough clearance to have both a bike rack and a cargo carrier on this product. The bikes would hang too low and would prevent cargo from being able to be carried with the carrier. Instead I would recommend the Hollywood Racks Sport Rider SE Platform Bike Rack w/ Cargo Carrier # HR1400Z-85. This is a bike rack/cargo carrier...
    view full answer...
  • Carrying 200 lb Scooter and Towing a Boat Trailer Simultaneously
    The only possible way I can think to do what you're asking about would be to use a multi-purpose ballmount like part # D210. However, the receiver portion of the ball mount has a maximum capacity of 350 lbs. This means that the weight of the scooter, plus its carrier couldn't weigh more than 350 lbs. The entire ballmount/receiver unit has a tongue weight capacity of 750 lbs, which means that the tongue weight exerted on the receiver plus the tongue weight applied to the trailer ball couldn't...
    view full answer...
  • Flat Towing a 2017 Jeep Wrangler Behind an RV and Carrying a Motorcycle at the Same Time
    Yes, you could use the dual receiver # RM-077-4 to flat tow your 2017 Jeep Wrangler and carry a small motorcycle at the same time provided that the combined tongue weight of everything in the adapter does not exceed its 400 pound tongue weight capacity. Like you said the Jeep will produce almost no tongue weight because it is basically supporting itself. There is only one motorcycle carrier that can be used at the back of an RV and it is Ultra-Fab carrier # UF48-979033. The carrier...
    view full answer...
  • Options for Mounting Winch to Trailer for Pulling Vehicle on to Trailer
    The Roadmaster Dual Hitch Adapter part # RM-077-4 just wasn't designed for towing a trailer so it's ratings aren't relevant to trailer towing. Although it has what looks like standard trailer capacities since they weren't rated with a trailer I can't recommend you use it for that purpose. The Curt Dual Hitch Adapter part # D-192 was designed for trailer use, which is probably why it has lower capacities since trailers put more strain on a ball mount than flat towing. A similar option...
    view full answer...
  • Can Roadmaster 077-4 Dual Hitch Receiver be Used Upside Down When Flat Towing Vehicle
    Yes, either the top or the bottom hitch opening on the Roadmaster adapter part # RM-077-4 can be used when flat towing a vehicle. I attached a picture that shows it used "upside down."
    view full answer...
    Image 1 for
  • Using Dual Receiver Adapter # RM-077-4 For a Winch Mount and Towing a Car Hauler
    Per its manufacturer, Roadmaster, the Dual Hitch Adapter you referenced, part # RM-077-4 cannot be used for towing a trailer. It is designed for a rolling load only. Curt makes a dual receiver adapter, part # D-192 that might work for you, but using any adapter or extender will lower the tongue weight capacity of your hitch by 50 percent. Also, a trailer hitch is designed to withstand horizontal pulling forces or tongue weight suspended from it, but a pulling force coming from an upward...
    view full answer...
  • Can Either of the Receiver Openings of the Roadmaster Dual Hitch # RM-077-4 Be Used for Flat Towing
    Yes, either hitch option can be used to tow your vehicle and the other to carry a bike rack. If you wanted to use either of the hitch openings for your bike rack and the other for flat towing it would be fine.
    view full answer...
  • Is there an Adapter for Towing a Trailer and Carrying a Bike Rack Together
    The Roadmaster Dual Hitch Receiver Adapter, # RM-077-4, is not for use with any type of trailer - tow bars only. What you need is the CURT Multipurpose Ball Mount, # D210. This ballmount was designed for the application you are describing. It has a tongue weight capacity of 750 pounds. Tongue weight will be the combined tongue weight of the trailer, the bike rack, and the bikes. The gross trailer weight capacity is 5,000 pounds. The reciever portion of the multipurpose ball mount has a...
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  • How to Determine Trailer Tongue Weight
    Trailer tongue weight is typically 10 to 15 percent of the gross trailer weight. So on a 2,000 pound trailer that would be 200 to 300 pounds. I have included a link to a help article that covers how to determine tongue weight for you. Some dual hitch receivers like # RM-077-4 cannot be used for towing a trailer. If you need to tow a trailer and carry an accessory at the same time you would use # D210. The top receiver portion has a 350 pound capacity and the whole thing has a 750 pound...
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