Roadmaster Dual Hitch Receiver Adapter, 2 " or 8" Drop/Rise

Part Number: RM-077-8

1009 Reviews | 93 Questions

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roadmaster hitch adapter dual extender fits 2 inch receiver or 8 drop/rise

roadmaster hitch adapter fits 2 inch rm-077-8

roadmaster hitch adapter bike racks cargo carriers mounted accessories trailers fits 2 inch

roadmaster hitch adapter bike racks cargo carriers mounted accessories trailers rm-077-8

roadmaster hitch adapter dual extender receiver 2 inch or 8 drop/rise

roadmaster hitch adapter dual extender bike racks cargo carriers mounted accessories trailers

roadmaster hitch adapter bike racks cargo carriers mounted accessories trailers fits 2 inch rm-077-8

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A Closer Look at the Roadmaster Dual Hitch Receiver Adapter, 2" or 4" Drop/Rise

Roadmaster Dual Hitch Receiver Adapter, 2 " or 8" Drop/Rise Spec Review

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Add a bike carrier or cargo carrier with the dual hitch receiver. 1-800-940-8924 to order Roadmaster hitch adapter part number RM-077-8 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Dual Hitch Receiver Adapter, 2 " or 8" Drop/Rise. Hitch Adapter reviews from real customers.

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Roadmaster Hitch Adapter - RM-077-8

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
Drop: 2 " or 8"
Rise: 2 " or 8"
Gross towing weight: 10,000 lbs
Tongue weight: 400 lbs
Limited lifetime warranty

Note:

Not for use when towing a trailer.
Using this extension will reduce your hitch's tongue weight capacity by 50 percent.

077-8 Roadmaster Dual Hitch Receiver Adapter, 8" Drop/Rise

Installation Details RM-077-8 Installation instructions

Customer Satisfaction Score:

93% were satisfied with this product

7% of customers were not satisfied

Product did not meet expectations
Wrong item was ordered

7% of customers were not satisfied

Product did not meet expectations
Wrong item was ordered

4.8

1009 reviews

5 Stars		(886)
4 Stars		(81)
3 Stars		(17)
2 Stars		(9)
1 Star		(16)

by: Patrick 08/27/2026 One Year Later

Great option for hauling bikes and a toad.

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by: Bob J 12/26/2020 One Year Later

Works great. We're towing a jeep and have a bike rack behind our motor home.

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Bob J. One Year Later

12/27/2021

Great. Havent lost the bikes or jeep.

Patrick W.

7/16/2022

They have not remedied the problem of the rounded receiver. Just bought the 10” rise adapter, absolutely built tough as nails. However, the two have the duel hitch receiver adapter receivers are rolled corner 2” stock. Will not allow 2” square hitch to go inside. Very disappointed as other post stated that problem was resolved.

by: Jerry 08/24/2026

Too early to tell haven't towed with it yet, but the order process went well and delivery went well. The product fit well and should be exactly what I needed.

by: James 04/09/2018

I ordered this to adapt my bike rack to my hitch while I flat towed my car with a Blue Ox Aventa tow bar. I was concerned about turn radius and I stumped the etrailer customer service.
I ended up with about 18” of clearance and 47” from the adapter to car.
I feel it is sufficient.

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by: Bruce 02/21/2019

Wow, excellent customer service. Thank you Jennifer is rare in our world today to say that. Hitch adapter shipped same day on a late afternoon order. No extra effort; just the way this company refreshingly does business. Part arrived promptly and well packaged. No nicks or scratches on the part. Truly was well stored and handled at their warehouse. Following are some pictures of the hitch adapter installed.

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by: Frank 12/18/2018

I just received hitch today. Pleasantly surprised that it actually arrived earlier than expected. It is every bit as described. Strong and sturdy. Cannot go wrong with Roadmaster. Can’t wait to hit the road. Thank you Natalie with etrailer.com. for your support and quick response.

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by: Tracee 10/26/2025

very heavy duty

by: Steve G 08/18/2020 One Year Later

The hitch is heavy-duty and works as expected. We can mount a bicycle rack or an extra
luggage rack on the back of the RV and still pull our tow vehicle without any problems

Steve G. One Year Later

8/19/2021

The hitch adapter still works great! No problems at all.

by: Jennifer 07/25/2025

Excellent product and service from etrailer! Received on time!

by: Sheila 05/12/2018

I received this product in record time. This is a quality product that solved the problem of using both my bike rack and cargo carrier on the back of my RV. I will definitely be visiting etrailer.com for my future needs.

Mike L.

5/13/2018

Glad you like the dual hitch adapter! The adapter has a 400 lb tongue weight capacity, which means that the cargo carrier, whats carried on it, the bike rack and the bikes cannot weigh more than 400 lbs. This figure will be lower if the tongue weight capacity of your RV is less than 400 lbs.

by: Bill C 08/26/2019 One Year Later

This was the perfect product to get the hitch height of my Class A gasser to the right level to tow a car flat behind it. I just used it this weekend and it has worked flawlessly. I forgot all about it, which i guess it what should happen with this type of equipment. etrailer is extremely helpful on the web page and the phone and I have used them for several purchases since getting my old Class C five years ago.

BTW, this thing is heavy! The receiver tongue is solid steel, not a tube. It has become a permanent fixture in the hitch.

by: Nick F. 06/21/2019 One Year Later

This hitch adapter works great! It allows me to use my bike rack with my cargo rack so we can haul our bikes along with all of our other stuff when we head out on our summer vacation. I also use it regularly as a hitch extender when I need to haul something in my truck with the tailgate down, and we want to take the bike rack. Only, drawback is it is pretty heavy duty (probably more than what I need), but if you are using it with a heavier trailer (e.g., camper or big boat), it probably should be that heavy duty.

by: Steve B 12/06/2019 One Year Later

Purchased this to use on a 2016 Winnebago Adventurer 37F towing a 2013 Honda CR-V. Attached a Schwegman 2 bike rack on top with a Blue Ox towbar below. Works great, plenty of clearance between the bikes and the car. Only issue is the hole for the pin when attached to the RV could be a little larger. The blue ox locking pins are a tight fit

by: Henry H 02/28/2021 One Year Later

I bought this for our class A. We pull a small Fiat and needed a second receiver output to mount a ham radio antenna. This mount is rated at 10,000 lbs and exceeds the rating on our hitch which is what we needed. It works perfectly for our purposes. This is not the first hitch related component we have purchased from ETrailer. They offer quality goods.

by: Michael 09/22/2024 One Year Later

Product quality is fine, however, tried to use with an ebike rack on upper hitch and flat tow hitch on bottom. Vehicle sway at highway speeds was too much, and I found bike rack on back of the towed Jeep was better.

by: Greg 08/30/2023 One Year Later

Works great! I use it on my motorhome to carry my bikes with a Rocky Mounts Carrier and flat tow my car with my Blue Ox system. It places the bike carrier at an optimal height over the front of the car but my may be different for other bike carriers. Very sturdy and seems to be quality all around.

by: Brenda 03/03/2019 One Year Later

THIS HITCH WAS GREAT IN HELPING LOAD MY TRUCK ONTO TRAILER. THEN WHEN I PULLED MY CAMPER I HAD AN EXTRA PACE TO HOOK MY BIKE RACK IN PLACE SEE MORE FUTURE USE IN COMING TIMES . VERY STURDY AND WELL BUILT.

by: Roger 05/19/2020 One Year Later

I was able to use the Tow Bar four times to pull a Ford Fiesta. It worked great. It was easy to hookup. The car follow the RV with no problems.
I need to develop a technique to disconnect the car from the RV. It is still hard to unhook the tow bar from the car even after I lift the release handles.

by: Gregory 11/05/2022

I have purchased four front mount hitches from etrailer and quite satisfied with product quality, fit and ease of installation. I purchase the dual receiver adapter to accommodate a winch and be able to use a front tow ball without the extra effort of removing winch to use ball. As usual quality was not an issue with the adapter. The slider on the adapter was solid stock rather than thick wall box tubing lending to superior strength. Welds and engineering are, as always, exceptional. I highly recommend etrailer products.

by: Gil 06/26/2019

I need an 8 inch drop between my Itasca motorhome and the Jeep Wrangler I tow behind it. Had a basic Roadmaster drop hitch before I added a bike carrier. Daisy-chained a dual hitch adapter in and was ok going to Florida from New England and back last winter with the two adapters in line together. But heading to Alaska this summer and wasn't comfortable with the extra points of failure. This Roadmaster hitch gives me the drop I need for towing and the second reciever for the bike rack in a single safe package. And kudos to eTraileelr for the very fast shipping. We leave for the great north tomorrow!! .

by: Scotty G 07/29/2019 One Year Later

Very durable, have been using with my Class A RV for over a year with no problems. Can get the bikes off without unhitching the car. Excellent customer service thanks so much!

by: Preston M 12/11/2019 One Year Later

hitch is perfect to towing our Ford C-Max at the proper height. We also use a bike rack on the top hitch to carry our two bikes.

by: Jacques 03/25/2022 One Year Later

It works well, feel solid. It dropped my tow hitch to the proper level and allows me to have my bike rack on top, all in one.

by: Arthur 01/08/2021

Great product and great company

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by: Robert 05/25/2021

etrailer go above and beyond to please there customers and have High Quality merchandise. I cannot say enough good about them after my last order! I am very pleased and I promise you that the next time I need anything that pertains to a trailer I will first check with them and if they have it and I am sure that they will, I will be getting it there. Wonderful to do business with, very personal service and the fastest shipping that I have ever seen!! You all are Great

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See what our Experts say about this Roadmaster Hitch Adapter

Do you have a question about this Hitch Adapter?

How to Carry Two Bikes While Flat Towing With Motorhome
We definitely have a solution for you that will allow you to carry your two bikes though not the exact adapter you are asking about that already has a ball mount. The first option is to use a dual hitch adapter which does have the needed clearance between the top and bottom receivers, though you do need to ensure you get the one that has the correct rise or drop. For that you can use the Roadmaster Dual Hitch Receiver Adapter, 6" Drop/Rise # RM-077-6, 8" Drop/Rise # RM-077-8 or 10" Drop/Rise...
view full answer...
Recommended Bike Rack and Dual Hitch Adapter for a Class A Motorhome
Hey Gail, thanks for all of the information and welcome back! You've done your homework really well and I do agree the Kuat Piston ION E-Bike Platform Rack item # KU89SR is going to be the best option. The Piston ION item # KU89SR being a wheel mount style means you won't have to worry about frame damage on your carbon bike. Even with the reduced 80 lbs weight capacity of being mounted on your class A it's still strong enough for your 50 lbs e-bike. For a dual receiver adapter, I recommend...
view full answer...
Flat Tow Components for 2023 Ford F150
Thanks for letting us help Jim. You're definitely most of the way there with your parts list. I do have a few recommendations and things I'd like you to verify before placing your order. For the tow vehicle lighting, I would make one change. The Curt Universal Tail Light Wiring Kit # C63CR is not compatible with vehicles that use PWM (pulse-width modulation) wiring, which I believe is used on your 2023 Ford F-150. I'm not certain which individual lighting circuits on your truck use PWM,...
view full answer...
Dual Hitch Receiver Compatible with Towing a Car Dolly
The Roadmaster Dual Hitch Receiver Adapter, 8" Drop/Rise # RM-077-8 has a towing capacity of 10,000 lbs but the tongue weight is limited to 400 lbs. As long as the tongue weight of your loaded tow dolly and whatever accessory you put in the top receiver is under the 400 lbs then you'll be just fine.
view full answer...
Can Roadmaster High Low Adapter be Used with Spare Carrier
Hey Bill, the Roadmaster High Low Adapter part # RM-077-8 that you referenced would work great for what you are looking for. It will lower your hitch opening like you are wanting and is fine from a weight capacity standpoint as well.
view full answer...
Dual Hitch Adapter for Carrying E-Bikes While Flat Towing a Kia Soul Behind a Motorhome
Hey Jake, You've definitely got a few things to consider, but I think we can find a good setup! I'd recommend looking at the Roadmaster Dual Hitch Receiver Adapters, which let you carry your Hollywood bike rack above your Blue Ox tow bar. The Hollywood Racks has an extension limit of 8", so any of these will work. They're available in several rise/drop sizes: 2-1/4" # RM-077-2 4" # RM-077-4 6" # RM-077-6 8" # RM-077-8 To determine the right size, measure from the ground to the center...
view full answer...
Availability of Dual Hitch Adapter that Could be Used to Carry Bike Rack and Tow Bar
Hey Mike, we have dual hitch adapters like the Roadmaster Dual Hitch Adapter # RM-077-2 which has about a 2 inch rise or drop. If you need a larger drop the # RM-077-8 has an 8 inch drop.
view full answer...
Flat Tow Vehicle While Also Using Bike Carrier
Yes, this is exactly what the MaxxTow Dual Hitch Extender for 2" Trailer Hitches, # MT70070 is intended for. However, keep in mind that per manufacturer this reduces your hitch rating by 50%. The extender has a weight rating of 400 lbs. tongue weight and gross trailer weight rating of 4,000 lbs. so please compare this to the vehicle you are flat towing. While the # MT70070 is designed to allow you to add an accessory such as a bike rack and use the tow bar, you cannot use an additional...
view full answer...
How To Carry Bikes While Flat-Towing a Chevy Sonic Sedan
Yes, I do have an option for you to carry bikes with your flat-tow setup. However, since there is not a trailer hitch for your vehicle yet and you don't want to use a trunk mount or roof rack bike rack then you will have no other option but to use a dual hitch adapter and place the bikes on a hitch mounted back rack between the tow vehicle and toad. For this, we have a few options for you depending on your rise/drop needs. In order to determine what your rise/drop needs are we will want...
view full answer...
Can a Cargo Carrier Be Used While Also Flat Towing?
As long as you RV Bumper is rated to carry the weight of one of the Cargo Carriers # e99050, # e99049 or # e96ZR and the receiver sits far enough below your bumper for your tow bar there is no reason you would not be able to use them together. Another option which is very popular is using a Dual Hitch # RM-077-8 with a hitch mounted Cargo Carrier # C18152. There are several different height and separation sizes available depending on the height you need your tow bar to sit. If you can...
view full answer...
Dual Hitch Adapter for Use with Thule T2 Bike Rack and Blue Ox Tow Bar
I would use a dual hitch adapter like the Roadmaster part # RM-077-8 even if your current setup is mostly level without a high low adapter. I'd run the adapter in the rise position so that the bike is 8 inches above the tow bar so that you'd have plenty of clearance between the rack and tow bar to prevent any clearance issues. If you are already using a high low adapter let me know how much rise/drop it has so I can pick out a dual hitch adapter with the same amount of rise/drop.
view full answer...
Recommended RV E-Bike Rack for Class C Motorhome
I was saying the exact same thing just a couple years ago! Fortunately, there are actually a couple RV E-bike racks that came out recently to answer this demand. First, I'll address the hitch adapter. While there are hitch adapters like the # RM-077-8 that gives you an 8" drop, this reduces the capacity of your hitch (not your bike rack) by half. So if your hitch has a capacity of 350 lbs and you use an adapter, then you're down to 175 lbs. That's still enough for 120 lbs of bikes plus...
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Can I Carry a Bike Rack On My RV While Flat Towing a Vehicle Behind The Motorhome?
The Roadmaster Dual Hitch Receiver Adapter # RM-077-8 will allow you to carry a bike rack and flat tow your 2018 Ford Explorer behind your 2013 Georgetown RV motorhome. You will be able to insert your tow bar in the lower receiver and a Bike Rack # HLY64FR in the upper receiver. The adapter is rated for up to 400lbs of tongue weight but it will reduce your receiver capacity by 50%. So if you have a receiver rated for 500lbs of tongue weight it will be only 250lbs. The adapter weighing 27lbs...
view full answer...
Can Dual Hitch Adapter be Used for Flat Towing & Bike Rack
Yes, you can use a dual hitch adapter for flat towing and carrying a bike rack at the same time. You just need the one with the correct rise or drop, and you can choose from the following: - 2" or 4" Drop/Rise: Roadmaster Dual Hitch Receiver Adapter # RM-077-4 - 2" or 6" Drop/Rise: Roadmaster Dual Hitch Receiver Adapter # RM-077-6 - 2" or 8" Drop/Rise: Roadmaster Dual Hitch Receiver Adapter # RM-077-8 - 2" or 10" Drop/Rise: Roadmaster Dual Hitch Receiver Adapter # RM-077-10 Then to...
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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...
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 I recommend the Kuat Transfer V2 Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount...
view full answer...
Towing Capacity With Dual Hitch Receiver Adapter - Boat And Four Bike Rack
I understand why someone would want to take their camper, boat, and four bikes RV'ing simultaneously! It sounds like quite the adventure! Let's talk about how it might be possible to make this work. You are correct that if the loaded bike rack is 300 lbs. and your tongue weight capacity is only 500 lbs., you only have another 200 lbs. to play with. It appears that your boat's tongue weight is not known to you. Typically this number is going to be 10-15% of its gross trailer weight, in...
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...
Flat Towing Jeep and Carrying 300 Pound Motorcycle Behind RV
We do have dual hitch receivers available that feature the kind of tongue weight capacity that should support both the weight from your flat towed Jeep and motorcycle, such as with the Roadmaster # RM-077-6 that has a 400 pound tongue weight limit. As long as the combined tongue weight of your Jeep and motorcycle (be sure to include the weight of the carrier itself as well) falls under this limit then the adapter will be up to the task. The Jeep really won't produce much tongue weight...
view full answer...
Solution to Use Thule Bike Rack While Flat Towing Jeep Wrangler
It is true that you should not use your Thule T2 Pro XTR 2 Bike Platform Rack # TH83JV on your Jeep Wrangler when it is being flat towed. The reason is the amount of movement that far behind your motorhome results in the rack not being stable; this is also why this rack should not be used on the back of a trailer. What you can do instead is use a dual hitch receiver adapter which will allow you to both flat tow your Jeep and use your bike rack. The correct one will depend on the rise or...
view full answer...
Recommended Dual Hitch Adapter & Ebike Rack For Flat Towing
There are dual hitch adapters you can use when flat towing so you can carry your ebikes, but none have an offset. The correct adapter is going to depend on the rise or drop you need: - 2-1/4" Drop/Rise: Roadmaster Dual Hitch Receiver Adapter # RM-077-2 - 2" or 6" Drop/Rise: Roadmaster Dual Hitch Receiver Adapter # RM-077-6 - 2" or 8" Drop/Rise: Roadmaster Dual Hitch Receiver Adapter # RM-077-8 - 2" or 10" Drop/Rise: Roadmaster Dual Hitch Receiver Adapter # RM-077-10 As for a bike rack...
view full answer...
Dual Hitch Receiver Adapter For Tow Dolly And Bike Rack
We do have a dual hitch receiver adapter that will allow you to use your tow dolly while also carrying your bike rack. The only thing you need to know is the amount of rise or drop you'll need, which will allow you to choose the right one. To determine this, just measure from the ground to the top of your motorhome's receiver, and then measure from the ground to the bottom of your dolly's coupler, and the difference you get is the rise or drop you'll require. If your motorhome's hitch...
view full answer...
How do I Eliminate Sag with the GearSpace 34 on My 2021 Mercedes Sprinter 3500?
If you are experiencing sag on your 2021 Mercedes Sprinter 3500 with the GearSpace 34 # HGK826 or # HGK819 installed, there are two common issues associated with this: too much weight or not enough ground clearance on your hitch extender. For the first issue, if you are using a compatible hitch receiver like the Draw-Tite # 75601 with a hitch extender like the Curt Hitch Extender # C45791, it is important to note that the use of an extender reduces the overall weight capacity to 50%....
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eBike Rack and Dual Hitch Adapter Recommendation For Carrying Bikes While Flat Towing Vehicle
For the bike rack, you cannot go wrong with the Hollywood Racks Sport Rider SE2, part # HLY74FR. The rack can handle two bikes weighing up to 80 lbs apiece with tires up to 5 inches wide, so it'll work on standard or fat bikes. The rack includes keyed alike hitch, cable and retaining hook locks for theft deterrence. The rack is designed for use on a motorhome, but SHOULD NOT be used on a towed camper or vehicle. The Thule # TH92BJ Doubletrack is a great bike rack, but it isn't rated for...
view full answer...

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