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Roadmaster Dual Hitch Receiver Adapter, 2" or 4" Drop/Rise
Roadmaster

Roadmaster Dual Hitch Receiver Adapter, 2" or 4" Drop/Rise

Part Number: RM-077-4
$206.24
Retail:$287.27
You Save: $81.03
Hitch Adapters
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Add a bike carrier or cargo carrier with the dual hitch receiver. 1-800-940-8924 to order Roadmaster hitch adapters part number RM-077-4 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 4" Drop/Rise. Hitch Adapters reviews from real customers.
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Roadmaster Hitch Adapters - RM-077-4

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

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 4"
  • Rise: 2" or 4"
  • 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, 2" or 4" Drop/Rise

Installation Details RM-077-4 Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.8

987 reviews
Review sort icon
Add a bike carrier or cargo carrier with the dual hitch receiver.

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

Earl profile picture

Earl

2/27/2022

Still perfect, finish has held up great.



by:

Etrailer’s customer is actually customer service. There’s real people who are there to help. Kate helped me get my order the next day after I realized I accidentally switched the billing and shipping addresses on the order form.

Richard profile picture

Richard

4/30/2024

Still works the same as when I purchased it.



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 !

Raymond profile picture

Raymond

4/10/2019

THE PRODUCTS WORKS AS DESIGNED. i STILL USE IT IN THE APPLICATION ABOVE . WORKS GREAT!



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.

William profile picture

William

4/17/2020

hitch is working great and my opinion is the same now as it was a year ago.



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.

Frank S. profile picture

Frank S.

7/28/2020

Exactly as expected!



by:

2” or 4” up/down is the solution I needed for a flat tow, 4” lower drop and a 2 bike rack, 2” rise. Very well constructed and looking for years of service out of this drop/rise combination!



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.

Mr. G. profile picture

Mr. G.

8/24/2020

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.



by:

Very well made with nice powder coat finish. Purchased to allow use of hitch mounted bike rack(when toad is connected) and get tow bar within "safe" zone for level towing. Like option of different drop length. Great service and fast delivery.

Larry P. profile picture

Larry P.

11/16/2017

Still performs as expected. No issues so for.



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.

Jeff profile picture

Jeff

1/25/2020

works great. use it all the time to haul our bikes and tow a car with our rv



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.

Leo S. profile picture

Leo S.

3/12/2020

Still working perfectly after more than 20K miles and more than a year on the road



by:

I Just Started using etrailer excellent service and fast to ship!



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.

James profile picture

James

2/17/2020

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.



by:

This dual hitch receiver was exactly what we needed as it allows us to pull our tow vehicle behind our RV and also carry our bike rack between the RV and the tow vehicle. The dual hitch receiver is very heavy-duty and very well constructed.

Steve P. profile picture

Steve P.

1/27/2018

Still working great one year later!!



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!

Jim M. profile picture

Jim M.

8/23/2018

Still performing and doing the job of bicycle hitch and hitch for the Falcon II tow bar.



by:

Love it !
Only one I`ve found that fits
my need with both upper & lower receivers having a strong tow rating.



by:

Works great to have hitch height options, very sturdy construction



by:

Great product and shipped quickly

Jack F. profile picture

Jack F.

12/19/2025

Works great, have it on my motorhome with cargo rack on top and hitch on the bottom, tow a small car with it. Well built and solid.

Nick S. profile picture

Nick S.

12/19/2025

@JackF That is great to hear. I love how these allow you to use the extra hitch while towing it really comes in handy. What kind of motorhome are you towing your vehicle with?


by:

Exactly what I needed. Now able to add storage box and still pull tow Dolly.

David profile picture

David

8/15/2023

Works great, pull out tow dolly with small SUV. Also pull 14’ flatbed trailer hauling my Kawasaki Mule.



by:

This is great for flat towing and for the bike rack. Thanx again for the help and advice Jamie

Chip profile picture

Chip

6/9/2025

Due to the fact when we go a distance we flat tow along with taking our bikes so this hitch works great



by:

I contacted etrailer and spoke with Terri N. I had previously purchased on 3 separate occasions another brand of dual hitch (none from etrailer) which all bent when pulling my 2018 Jeep Wrangler behind our 2014 Fleetwood Bounder 35K Motorhome with a Hollywood bike frame carrying 2 Rad Power e-bikes. Apparently, we were using the wrong adaptor. She was VERY helpful with information, discouraging more than 1 hitch adaptor and recommended the 10,000 pound dual hitch receiver with a 2-4 in drop/rise. So far, it seems to be working fine. My only concern is that there is not enough clearance to fold up my Blue Ox tow bar while connected to the hitch. Also, the front of the Jeep bumper is VERY close to the bike rack upon turning the Motorhome.



by:

Delivered on time for installation and use right away.



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!

Ed profile picture

Ed

7/3/2021

Excellent option to add a bicycle rack when towing. Easy to use. Well made. I highly recommend.



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!

John O. profile picture

John O.

3/31/2015

After 1 year this product is still working as day 1.



by:

Was looking for a way to carry 2 e-bikes on a Hollywood rack, and tow my Jeep, behind my Class A RV. This dual hitch looks like it will do exactly what I want, at least when doing my test set-up. Only reason I didn’t give it a 5star is because when the rack and Blue Ox tow bar were installed, there was significant “slop”. I resolved this problem by buying an adapter at the local hardware store, and it is now tight as it should be.

Rick profile picture

Rick

9/8/2025

Dual receiver continues to perform as expected, with the adapter also continuing to keep the rattle nonexistent



by:

Solved the issue of towing bikes on the back of the RV. Instead of on the back of the tow vehicle. Only issue with this setup is keeping the tow bar in a position where it can be stowed when you're parked.


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See what our Experts say about this Roadmaster Hitch Adapters

  • Bike Rack for Lectric XP4 750 On Motorhome Flat Towing Jeep
    Hey Kevin! For a bike rack that is rated for motorhomes and can handle your XP4 750 e-bikes I recommend the Hollywood Racks RV Rider Bike Rack # HLY64FR. Your bikes weigh 62 lbs each and this has a capacity of 80 lbs per bike. It also uses padded clamps which can secure the bikes by the frame or seat post, perfect for step-through designs. You will also need a Dual Hitch Receiver Adapter like # RM-077-6 (2" or 6" Drop/Rise) or # RM-077-4 (2" or 4" Drop/Rise) so you can mount the bike...
    view full answer...
  • How to Use Bike Rack While Flat Towing Vehicle Behind RV
    In order to use a hitch-mounted bike rack like the Swagman Original # S64152-2 that you were looking at while towing a vehicle, you will just need to add the Roadmaster Dual Hitch Receiver Adapter # RM-077-4. This adapter will slide into the 2 inch hitch receiver on your RV to provide two, 2 inch receivers on the other end. The bottom receiver can be used for your Blue Ox tow bar, while the top receiver can be used for a hitch-mounted accessory like the Swagman Original bike rack. I have...
    view full answer...
  • High Capacity Dual Hitch Receiver With Capacity Greater Than 5,000lbs
    Roadmaster offers a Dual Hitch Receiver, part # RM-077-4 that has a 10,000 lb towing capacity. However, the Receiver is meant for flat towing a vehicle and carrying a hitch mounted accessory, not for towing a trailer. The top receiver has a 400 lb tongue weight capacity, which means that only 400 lbs of downward force can safely be applied to the Dual Hitch Receiver. If you're wanting to tow a trailer and carry a hitch mounted accessory at the same time, I'd recommend using the # D210...
    view full answer...
  • Recommendation for Transporting Bikes While Flat Towing Vehicle
    The Roadmaster Dual Hitch Receiver Adapter # RM-077-4 referenced in your question is designed specifically to allow you to use a bike rack while towing your vehicle behind an RV. The center of the hitch pin hole on the adapter that will be used for the bike rack extends 9-1/2 inches from the center of the hitch pin hole on your hitch receiver. I have attached an image to clarify this dimension. The issue though with using your Thule Doubletrack Bike Rack # TH990XT is that it is not actually...
    view full answer...
    Image 1 for
  • Can I Use the Hollywood Racks Bike Rack in the Roadmaster Dual Hitch Adapter?
    HI Norman, If you're using a Roadmaster tow bar adapter like the # RM-077-4 it has a tongue weight of 400lbs. The Hollywood Racks RV Rider Bike rack part # HLY64FR weighs 63lbs by itself, so adding two electric bikes weighing 75lbs each would bring the total weight up to 213lbs. So, it is rated highly enough to handle the bike rack and both electric bikes. Where do you like to ride your e-bikes at?
    view full answer...
  • RV Bike Rack Recommendation for Use When Flat Towing Vehicle
    At the rear of a trailer or RV the ride quality is very rough when compared to the ride quality at the rear of a passenger vehicle. Reason being the suspension isn't as sophisticated and there is a longer distance between the rear axle and the rear of the trailer which exaggerates the movement of the trailer when hitting bumps. Because of that only a few bike racks were designed to be reinforced enough for that type of use. The Swagman Dispatch part # S44FR is a great RV approved bike...
    view full answer...
  • Recommended Bike Rack to Use on a Class A Motorhome and Toyota Corolla With a Class I Hitch Receiver
    Since you are wanting to use a bike rack on a Class A RV you will want to go with one that has been tested and approved for use on an RV. The Swagman Chinook 2 Bike Platform Rack # S64683 that you referenced has not been approved for use on an RV. A similar bike rack that is made by Swagman and is rated for use on an RV is the Dispatch 2 Bike Platform Rack # S44FR. This has pretty much all of the same features as the Chinook minus the tilting feature. The reason why there are certain...
    view full answer...
  • Dual Hitch Adapter And Bike Rack For Behind a RV Motorhome When Flat Towing
    You are going to want to use the Roadmaster Dual Hitch Adapter # RM-077-4. Since the bike rack is going behind your motorhome and carrying E-Bikes I recommend the Hollywood Racks RV Rider Bike Rack # HLY64FR as it is rated for use behind motorhomes and the frame mounted connection will allow you to attach to the seat post since most E-Bikes have an alternative style frame for the battery.
    view full answer...
  • 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...
  • Dual Hitch Receiver that Keeps a Flat Tow Set-up at the Same Height with Minimal Rise for Bike Rack
    I do have another option for you, but you are correct that the Roadmaster Dual Hitch Receiver Adapter # RM-077-4 would not work with your Jeep sitting +2" already because you would be sitting with the Jeep at +4" with the # RM-077-4 adapter. We do have the Curt Dual Hitch Extender # D-192 which will maintain your current height for your flat tow set up and provide a second hitch receiver with a 5-3/4" rise for you bike rack. This is the smallest rise we have for a dual hitch adapter that...
    view full answer...
  • Parts Needed to Flat Tow a 2018 Ford Fiesta SE Hatchback
    I would love to help you get absolutely everything that you need to flat tow your 2018 Ford Fiesta SE Hatchback. However, Blue Ox does not make a base plate kit for the non EcoBoost model therefore I recommend you use Roadmaster instead. I typically prefer Roadmaster anyhow as they offer more options for flat towing equipment. I have attached a list of all the parts you will need below: Roadmaster Nighthawk All Terrain Tow Bar part # RM-676 Roadmaster Direct-Connect Base Plate Kit part...
    view full answer...
    Image 1 for
  • High-Low Adapter Needed for Flat Towing a 2008 Jeep Wrangler Sahara
    Since you can use different brand high-low adapters with any tow bar we actually have flat towing high-low adapters that will work for your situation. Unfortunately none of our dual adapters have the weight capacity to accomplish this. Attached is a link to our selection of high-low adapters that you can filter through. These range from a 2" rise/drop # RM-072-2 all the way to a 10-1/4" rise/drop # RM-048-10. If you're looking for an option with about a 7" drop like what the Malone # RM-048-10...
    view full answer...
  • Can I Put Two Bike Racks in a Dual Hitch Receiver?
    Do you mean, can the Swagman Original # S64152-2 3-Bike Hanging Rack be hitched in simultaneously with your Kuat NV 2.0 4-Bike Platform Rack # NV22G-NA22G if you use the Roadmaster Dual Hitch Receiver Adapter # RM-077-4? Dual hitch receivers, like # RM-077-4, are designed for flat towing a vehicle behind an RV using the bottom receiver and have a top receiver is designed for accessories like bike racks or cargo carriers. It is not designed for two bike racks. Anyways, the bikes would not...
    view full answer...
  • Does Roadmaster Dual Hitch Receiver Adapter Tongue Weight Include Bikes and Bike Rack
    Hey Jim, Yes, the 400 lb tongue weight of the Roadmaster Dual Hitch Receiver Adapter # RM-077-4 would include the weight of your bikes plus the bike rack. If you don't already have a bike rack please let me know what type off bikes you have and how many you need to carry - I'll be more than happy to make a recommendation for you!
    view full answer...
  • Can Thule OutPace 2 Bike Carrier Be Used On Motorhome Or On Flat Towed Vehicle?
    Thanks for checking, Angie. While the Thule Outpace 2 Bike Rack # TH39SA is rated for passenger vehicles and motorhomes, it’s not currently approved for use on flat-towed vehicles like your CR-V in tow. The added torque from towing can stress the rack, so we’d recommend going with an RV-rated model like the Hollywood Racks RV Rider Bike Rack # HLY64FR if you need it to ride while towed. You can absolutely use the Outpace when driving the CR-V or motorhome on its own, though! If you are...
    view full answer...
  • Will the Roadmaster Rollaway Hitch Protector Fit a Dual Hitch Receiver
    Yes, I do not see any issues with the compatibility between Roadmaster Rollaway hitch protector # RM-050 and dual hitch receiver # RM-077-4. Take a look at the video for the hitch protector I have linked. You can see how it attaches to a receiver showing how there wouldn't be interference between the 2 parts.
    view full answer...
  • Availability of Roadmaster Dual Hitch Adapter with 2 inch More Rise Than RM-077-2
    Hey Jim, I believe what you are looking for is the Roadmaster Dual Hitch Adapter part # RM-077-4 which has a hitch opening that drops down 2 inches and then a second opening that would be used in the rise position at 4 inches of rise. This has two more inches of rise on the top opening than the part # RM-077-2.
    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...
    Image 1 for
  • Can You Use Bike Rack on Back of Motorhome with Blue Ox Tow Bar and KarGard
    In order to flat-tow a vehicle and carry bikes at the same you'll need a dual hitch adapter like the Roadmaster Dual Hitch Receiver Adapter for Tow Bars part # RM-077-2 or part # RM-077-4. In most cases, your bikes won't come into contact with the vehicle during turns but we can't say definitively that's that case for every vehicle as there are simply way to many factors. That said, the arms on Blue Ox tow bars are pretty long so this will increase your clearance. I'd also recommend a hanging...
    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...
    Image 1 for
  • Best Way to Tow a Trailer and Attach a Bike Rack to the Same Hitch
    I have a solution but all dual hitch adapters are only rated for flat towing. To tow a trailer and haul a bike rack off of your vehicles hitch, I recommend the Gen-Y Adjustable 2-Ball Mount w/ Stacked Receivers item # 325-GH-514. This adjustable ball mount has four 2" receiver openings that will allow you to use both a hitch mounted bike rack and tow your trailer. This ball mount has a 12,000 lbs towing capacity and a 1,500 lbs maximum tongue weight. This will not reduce your motorhome's...
    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...
    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...
  • Can GearSpace 34 Hitch Cargo Carrier be Used on Motorhome Flat Towing Vehicle
    Actually it would be possible to use the GearSpace 34 Enclosed Cargo Carrier # HGK826 with a dual hitch adapter like the part # RM-077-4. The top opening can be used for the carrier and the bottom for flat towing a vehicle with a tow bar.
    view full answer...
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