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  1. Accessories and Parts
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  7. 4 Inch Rise/Drop
Roadmaster Dual Hitch Receiver Adapter, 2" or 4" Drop/Rise

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

Item # RM-077-4
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Our Price: $147.95
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Shipping Weight: 25 lbs
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Add a bike carrier or cargo carrier with the dual hitch receiver. 1-800-940-8924 to order Roadmaster accessories and parts part number RM-077-4 or order online at Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster Dual Hitch Receiver Adapter, 2" or 4" Drop/Rise. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (181)
  • Q & A (0)
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  • Why etrailer?

Roadmaster Accessories and Parts - RM-077-4

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

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 4"
  • Rise: 2" or 4"
  • Gross towing weight: 10,000 lbs
  • Tongue weight: 400 lbs
  • Limited lifetime warranty

Dimensions of Dual Hitch Receiver


  • 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 Reviews

Roadmaster Dual Hitch Receiver Adapter, 2" or 4" Drop/Rise - RM-077-4

Average Customer Rating:  4.8 out of 5 stars   (181 Customer Reviews)

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


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!

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


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. 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!

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


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

Still perfect, finish has held up great.
Earl - 02/27/2022


I bought this adapter to attach a bike rack while flat towing my car behind a motorhome. The hitch adapter came quickly and easy to attach. I highly recommend this product.


I just received this order this evening and why is that super fast it's very nice piece and it's solid steel.

Bruce - 03/10/2022


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

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


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.

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


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.

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


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.

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


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.

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


Perfect fit. Very well built.


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


This is an absolutely a heavy duty receiver. The receiver is sold and not hollow. Shipping was slower than expected. They held it for3 days before shipping. etrailer needs to get better on this considering they are not the only ones to have this. Roadmaster has quality products.


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.


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.


Works as designed. Excellent quality pr oduct.


Great service. Very solid product with a really nice paint job.


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.


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!

Still hanging tough!
Oscar - 09/25/2019


Excellent Hitch
heavy duties the 6 inch
etrailer service was fantastic


Excellent service from ! 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 videos are very helpful, as well as the answers to their FAQs.
Tom from Bossier City, La.


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.

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


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.


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

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


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.

Still working great one year later!!
Steve P - 01/27/2018

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