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Roadmaster Dual Hitch Receiver Adapter, 2" or 6" Drop/Rise

Roadmaster Dual Hitch Receiver Adapter, 2" or 6" Drop/Rise

Item # RM-077-6
Our Price: $181.88
Hitch Adapters
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Shipping Weight: 26 lbs
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Add a bike carrier or cargo carrier with the dual hitch receiver. 1-833-496-1390 to order Roadmaster hitch adapters part number RM-077-6 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Dual Hitch Receiver Adapter, 2" or 6" Drop/Rise. Hitch Adapters reviews from real customers.
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  • Reviews (102)
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  • Videos (2)
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Roadmaster Hitch Adapters - RM-077-6

  • Dual Hitch Adapter
  • Fits 2 Inch Hitch
  • 10000 lbs
  • Bike Racks
  • Cargo Carriers
  • 6 Inch Rise/Drop
  • Roadmaster

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


  • 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)


  • Application: 2" x 2" trailer hitches
    • Dual receivers have 2" x 2" openings
  • Drop: 2" or 6"
  • Rise: 2" or 6"
  • Gross towing weight: 10,000 lbs
  • Tongue weight: 400 lbs
  • Limited Lifetime Warranty

Dimensions of hitch adapter

Note: Not for use when towing a trailer.

077-6 Roadmaster Dual Hitch Receiver Adapter, 2" or 6" Drop/Rise

Installation Details RM-077-6 Installation instructions

Video of Roadmaster Dual Hitch Receiver Adapter, 2" or 6" 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, 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 Satisfaction Score:

Customer Reviews

Roadmaster Dual Hitch Receiver Adapter, 2" or 6" Drop/Rise - RM-077-6

Average Customer Rating:  4.7 out of 5 stars   (102 Customer Reviews)

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


Another Roadmaster quality product, amazed as how it has resisted signs of rust or corrosion from being exposed to the elements. Part looks as good as new.


This was the perfect solution for our problem. We needed to add a bike rack to our hitch that we already used for towing.


Haven’t used it yet, but the welds and paint look nice and Shawnee had given us excellent customer service! Heavy duty hitch is exactly what we were looking for!


This is great. The only issue was I had to buy a new hitch and extender.. Mine was square with square corners. The tubing in this was rounded in the corners.


Fast delivery of part and works very nice. Still need to see how it travels but stationary it looks great!


We bought this hitch along with a bike rack. After a year of use we are still travelling across North America. Awesome product! Easy and totally easy to use.

Delivery was fast and efficient.


Not much to say, solidly built and works well. I do use the anti-rattle U-bolt style clamps to eliminate vibration.


I’ve said it before and I’ll say it again, this Company is outstanding! They handle great products, their website is easy to navigate, and their ordering process is simple. If they have your product in stock, they ship almost immediately! Do business with


Used on motorhome. Solid shaft, high strength, works well for towing and carrying bikes. Make sure the rise is high enough to prevent towed auto fender hitting bike rack when making a tight turn.


I have used this drop hitch for a year now without any issues. I would recommend it to those needing something similar.


This is a great and heavy built hitch adapter. My only issue is that if given only 1/2 inch more distance between the two adapters it would help a lot. I cannot open up buy Blue Ox Towing bars out of the stow away position in the lower receiver while my 4 bike Thule bike carrier is installed on the upper reciever. Quite a nuisance. Otherwise, a GREAT product.


Very nice and heavy-duty!!!


Very pleased with the overall quality of the product. Very pleased with customer service and order to ship process. Thank you!!


This thing is well made and appears bulletproof. Very happy with it. I’m also extremely pleased with the level of assistance I received from eTrailer (Paul B). He was super helpful, kept me up to date on the shipment and even got the product to me two days sooner than predicted. Thank you eTrailer team!


Well built, good looking welds. Good finish, solid feels heavy duty.


Did not accept my cage space carrier. I canceled a May arrival so then they sent me another (same Receiver) now I have to send back TWO


works much better that the original one that wasnt large enough. etaailer customer service is tops!!


Well built and works as advertised


So far so good! They work great


Good product. I was a bit disappointed that the bar would not except my current bike rack as edges were rounded, bike rack post was square. Had to but a new bike rack.


Extremely high quality And quick delive ry


Always works great. Solidly built


I'll let you know when I use it


Bruce - 03/14/2022


Very easy to deal with etrailer. Paul was very helpful and kept me informed on my order.

Show More Reviews

See what our Experts say about this Roadmaster Hitch Adapters

  • Can Roadmaster Dual Hitch Receiver Adapter # RM-077-6 be Used with Tow Dolly
    At one point Roadmaster would only recommend the use of the Roadmaster Dual Hitch Receiver Adapter # RM-077-6 with flat towing setups but they recently changed that stance and now allow the hitch adapter to be used with a tow dolly like they told you.
    view full answer...
  • Hitch Extender with 4 to 6 inches of Rise to Carry a Bike Rack or Cargo Carrier
    It sounds like you're looking for a hitch adapter that gives you 4 to 6 inches of rise to carry a bike rack or cargo carrier. We don't have a standard adapter with a rise but we do carry dual hitch adapter that have two receivers where one is used in the rise position. You don't have to use the other receiver opening if you don't need it. I recommend the Roadmaster, part # RM-077-6, because it has a 6 inch rise and is rated for up to 400 pounds of tongue weight. Since it has its own...
    view full answer...
  • Can Recumbent Bike Rack be Used with Roadmaster Dual Hitch Receiver Adapter
    The tongue weight capacity of the # RM-077-6 is 400 lbs so as long as your rack and bikes weigh less than that considering the tongue weight of your tow dolly as well you'd be fine.
    view full answer...
  • Is it Possible to Carry a Scooter Carrier and Flat Tow a Vehicle
    A scooter carrier is a bit heavy but we do have dual hitch adapters like the Roadmaster part # RM-077-6 which have a tongue weight capacity of 400 lbs and is designed for flat towing a vehicle and carrying an accessory above it.
    view full answer...
  • Dual Hitch Adapter With 6 Inches of Drop For Bike Rack And Flat Towing
    We have some options for you so you can flat tow and carry your bike rack, but it sounds like you are looking to use two adapters at the same time, which is not something that you can do. If you just need an adapter with two receivers and 6 inches of drop, that option is available from Roadmaster: - Roadmaster Dual Hitch Receiver Adapter, 6" Drop/Rise # RM-077-6 This will allow you to connect your tow bar to the bottom receiver and your bike rack to the top receiver. I have added a link...
    view full answer...
  • Can Dual Hitch Adapter Be Used To Flat Tow Jeep and Carry Accessory In Upper Receiver?
    As long as you are not exceeding the tongue weight rating of the trailer hitch receiver or dual hitch receiver adapter, you will not have any issues adding your 150lb accessory with the adapter as is, but I do not recommend modifying the adapter in any way as that will void the warranty of the adapter. If you cannot find the tongue weight rating of your adapter you would be better off replacing it with one like the Roadmaster Dual Hitch Receiver Adapter, 6" Drop/Rise # RM-077-6 which has...
    view full answer...
  • Dual Hitch Adapter For Flat Towing A 2005 Mini Cooper While Carrying 2 E-Bikes
    I recommend using the Roadmaster Dual Hitch Receiver Adapter # RM-077-6 for your bike rack. This adapter will lower your tow bars by 2" which you will want to ensure still give you the +/- 3" height needed for the tow bars to safely operate. The other 2" receiver is raised 6" for the bike carrier. This lift will ensure that your tow bars have clearance from the bike rack or bikes depending on your carrier. The adapter is rated for a maximum tongue weight of 400lbs which you will be well...
    view full answer...
  • Roadmaster Dual Hitch Adapter with 6 inch Drop for Flat Towing Vehicle and Carrying Bike Rack
    Yes the Roadmaster dual hitch adapter part # RM-077-6 that has a 6 inch drop hitch opening as well as a higher one that you could use for your bike rack would work great for you. This adapter was designed for basically your exact situation where the lower hitch is used for the tow bar and the upper one for an accessory like a bike rack.
    view full answer...
  • Weight Capacity of the Roadmaster Dual Hitch Receiver Adapter
    The Roadmaster Dual Hitch Receiver Adapter, 2" or 6" Drop/Rise # RM-077-6 will be able to hold your spare tire as long as you are not exceeding the tongue weight capacity of the adapter or your trailer hitch. The Roadmaster adapter has a maximum tongue weight of 400 lbs. So, as long as you are not over 400 lbs of tongue weight the adapter won't have any problems.
    view full answer...
  • Which Dual Hitch Adapter Has the Highest Tongue Weight Capacity
    The dual hitch adapter we carry with the highest tongue weight capacity is the Roadmaster Dual Hitch Receiver Adapter part # RM-077-6 for 6" rise or part # RM-077-8 for 8" rise. They both have a 400 lb tongue weight capacity. Please note that this adapter is designed for flat towing only. If you can give me a better idea of what you are using the adapter for we may have alternative options if the above will not work.
    view full answer...
  • Dual Hitch with 6 Inches of Drop
    Sure is. You need part # RM-077-6 which has a rise or drop of 6 inches depending which way you use it. It's exactly like part # RM-077-8 except for the amount or rise/drop.
    view full answer...
  • Roadmaster Hitch Adapter for Flat towing a 2018 Jeep Rubicon and Two E-Bikes
    I recommend the Roadmaster Dual Hitch Receiver Adapter, 10" Drop/Rise item # RM-077-10. This adapter was designed for this type of set up. Your Jeep Rubicon and Swagman E bike rack weigh well below the 10,000 lbs maximum capacity of this hitch. I have attached a review video as well as a picture that show this rack being utilized in the same way.
    view full answer...
    Image 1 for
  • Dual Hitch Adapter Solution for Needing 6 inch Rise/Drop
    I have a solution for you but we can't recommend using two hitch adapters at the same time due to how much added leverage and movement would be added. Instead your best option would be Roadmaster dual hitch adapter like the part # RM-077-6 which gives you ability to have 6 inch rise or drop for one hitch opening and a 2 inch rise/drop for the other opening.
    view full answer...
  • How to Flat Tow Vehicle and Transport Two e-Bikes Behind Motorhome
    The best way to flat tow your Fiat 500 or Mini Cooper and also transport your two e-bikes is with a Roadmaster Dual Hitch Receiver Adapter like # RM-077-6. This adapter is specifically designed for this application, providing you with a 2 inch receiver on the bottom for attaching a tow bar and an additional 2 inch receiver on top to attach a hitch-mounted accessory like a bike rack. As long as the combined tongue weight of your vehicle and bike rack doesn't exceed the adapter's 400 pound...
    view full answer...
  • How To Carry Bikes and Use a Tow Bar On the Back Of An RV
    In order to carry bikes on the back of an RV and still use a tow bar you'll need to look into a dual high, high-low adapter like the Roadmaster Dual Hitch Receiver Adapter for Tow Bars part # RM-077-2. This adapter is also offered in a few other rises/drops like part # RM-077-4 and part # RM-077-6.
    view full answer...
  • Which Roadmaster Dual Hitch Adapter For Carrying Bike Rack While Flat Towing
    Since the receiver height and the base plate height of the vehicle is the same, you won't need to worry about keeping the tow bar level. If your bike rack has an angled shank with a couple inches of rise to it, you could use the # RM-077-6. If the bike rack has a straight shank, you'll want a dual-hitch adapter with a larger rise such as # RM-077-8 for an 8-inch or # RM-077-10 for a 10-inch rise to move the bike rack up and out of the way. The adapters have a tongue weight capacity...
    view full answer...
    Image 1 for
  • 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...
  • Dual Adapter For Flat Towing & Carrying Bike Rack
    While there isn't an adjustable option, there are dual hitch adapters for flat towing that allow you to tow your vehicle and carry a bike rack at the same time. The right one just depends on the amount of rise or drop you need. Also keep in mind the use of an adapter will reduce the tongue weight capacity of your hitch by 50 percent, and that the rise or drop will depend on the way the adapter is turned. - 2" or 4" of Rise/Drop: Roadmaster Dual Hitch Receiver Adapter # RM-077-4 - 2" or...
    view full answer...
  • How to Carry a Bike Rack and Flat-Tow a Vehicle
    There is not a maximum length ball mount or hitch extension that can be used in a flat-towing setup. However, the further out you go, the less tongue weight the ball mount or extension will be able to carry which is not really an issue for a flat-towing setup but is something you need to keep in mind. The best option we have for you to flat-tow your vehicle and carry a bike rack is with the Roadmaster Dual Hitch Receiver Adapter part # RM-077-2 for 2-1/4" rise/drop, part # RM-077-4 for...
    view full answer...
  • Recommended Dual Hitch Adapter for Newmar Baystar Towing 2013 Jeep Wrangler Unlimited
    Thank you for providing those helpful measurements. With the 8" difference I would go ahead and choose the Roadmaster Dual Hitch Receiver Adapter, 2 " or 8" Drop/Rise # RM-077-8 over the # RM-077-6. Loading it won't make much of a difference on the height. Also, the flat towed vehicle adds no tongue weight so really there should be no sag at all. Even if you did somehow drop 2" after loading your motorhome you would still be in the safe zone, which is +/- 3" from level. If you want to...
    view full answer...
  • Recommended Dual Hitch Adapter and Cargo Carrier for Flat Towing/Carrying Bike Rack and Cargo Carrie
    You can use a Dual Hitch Adapter like # RM-077-2 so you can simultaneously carry a cargo carrier/bike rack and flat tow. There are a couple things to keep in mind, though... Using an adapter will reduce the tongue weight capacity of the hitch by half. Therefore, if the hitch has a tongue weight capacity of 350 lbs, using the adapter will reduce that capacity to 175 lbs. That's not a big deal for the flat towed vehicle, because flat towed vehicles are a rolling load that don't exert any...
    view full answer...
  • Hitch Receiver Adapter With a 6" Rise For Tow Bars To Sit Level
    Yes, the Roadmaster Dual Hitch Receiver Adapter # RM-077-6 can be flipped to raise the receiver 6" and allow your tow bar to be level. You would not be able to use the lower receiver tube with your tow bar on top. I recommend the Roadmaster High-Low Adapter # RM-048-6 for raising your tow bars. This will ensure that the additional receiver does not hang to low as it may catch on road debris or contact speed bumps depending on the height of your vehicle receiver. The Roadmaster Quiet...
    view full answer...
  • What Adapter To Raise Hitch Mounted Cargo Carrier On a 2019 Toyota RAV4
    For raising your hitch mounted cargo carrier on your 2019 Toyota RAV4 I recommend the Roadmaster Dual Hitch Receiver # RM-077-6 over the Malone 2" Dual Purpose Hitch Receiver # MPG544 due to the Roadmaster # RM-077-6 being about 1 inch taller. If you need even more rise you can use them Roadmaster Dual Hitch Receiver # RM-077-8. Keep in mind that the use of any trailer hitch adapter will reduce the tongue weight rating of your trailer hitch receiver by 50%. For towing a trailer I recommend...
    view full answer...
  • Dual Hitch Receiver to Clear 6 Inches for the Back of an RV
    We do have Malone adapter # MPG544 which measures 9 inches from the center of the hitch pin hole to the back of the top receiver. If you are needing the dual receiver in order to carry an accessory at the back of your RV while also towing a vehicle behind the RV then there are some options that will work for you such as Roadmaster dual receiver adapter # RM-077-2 (2 inch rise/drop), # RM-077-4 (4 inch rise/drop), # RM-077-6 (6 inch rise/drop), or # RM-077-8 (8 inch rise/drop). But these...
    view full answer...

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