1. Trailers
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Roadmaster Tow Dolly with Electric Brakes - 4,250 lbs

Roadmaster Tow Dolly with Electric Brakes - 4,250 lbs

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Our Price: $2,564.36
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Shipping Weight: 694 lbs
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Tow your vehicle without installing a tow bar or base plates. This tow dolly has a pivoting deck for easy maneuvering and electric brakes for safe stopping. Sliding ramps adjust side-to-side from 34" to 77" to fit most vehicles. Lowest Prices for the best trailers from Roadmaster. Roadmaster Tow Dolly with Electric Brakes - 4,250 lbs part number RM-2050-1 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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Roadmaster Trailers

  • Tow Dolly
  • 4250 lbs
  • Roadmaster
  • Powder Coated Steel
  • Wheel Decks
  • 8-1/2W x 12L Foot
  • 2 Inch Ball Coupler

Tow your vehicle without installing a tow bar or base plates. This tow dolly has a pivoting deck for easy maneuvering and electric brakes for safe stopping. Sliding ramps adjust side-to-side from 34" to 77" to fit most vehicles.


  • Tow dolly makes it easy to tow different vehicles without installing a tow bar and base plates
    • Ideal for cars with front-wheel-drive automatic transmissions
  • Towing deck keeps front wheels of towed vehicle up and off the ground
    • No need for a transmission lube pump system or driveshaft disconnect
  • Loading ramps slide from side-to-side to fit almost any vehicle
    • Laser-cut grooves provide extra traction for safe loading
  • Electric brakes make it safe and easy to stop while towing
    • Helps prevent wear and tear on your RV's brakes
    • Requires an electric brake controller (sold separately)
  • Deck platform swivels 9 degrees for tight cornering and easy maneuvering
  • Heavy-duty trailer tires let you tow heavy vehicles with ease
  • Accu-Lube hubs with grease fittings make it easy to grease the bearings
  • Adjustable wheel nets fit tires sizes that are up to 30" outer diameter x 11" wide
    • Includes ratchets
  • Brake lights with turn signals included
  • Powder-coated steel resists corrosion
  • Polyethylene fenders are durable and won't rust
  • 5-Way, 6-way, or 7-way connector (sold separately) required to activate dolly's brakes
  • Made in the USA
  • Limited Lifetime Warranty


  • Application:
    • Maximum vehicle weight: 4,250 lbs
    • Maximum tire size: 30" outer diameter x 11" wide
  • Overall length: 121"
  • Overall width: 102"
  • Usable width:
    • Narrow ramp position: 34" from inner tire tread to inner tire tread
    • Wide ramp position: 77" from outer tire tread to outer tire tread
  • Distance from end of coupler to pivot bolt in deck platform: 86-1/2"
  • Dolly weight: 545 lbs
  • Height at fenders: 29"
  • Trailer ball size: 2"
  • Recommended ball height: 17" - 19"
  • Tires: ST205-75R14 radial

When towing your vehicle with a tow bar, all 4 wheels are in contact with the ground. Certain vehicles - namely, those with front-wheel-drive automatic transmissions - require either a transmission lube pump system or a driveshaft disconnect when being flat towed. Using a tow dolly eliminates the need for those by lifting your vehicle's front wheels off the road. In addition, using a dolly eliminates the need for base plates that clutter the front of your towed car, difficult-to-install wiring, and a potentially expensive supplemental braking system. Also, if you want to tow multiple vehicles, this dolly is a great alternative to traditional flat towing because you don't have to purchase and install brackets and wiring for all of your cars.

Superior Design

Electric Brakes

The built-in electric brakes make it safe and easy to stop your vehicle while you're towing. This meets towing requirements, and also helps prevent the extra wear and tear on your RV's brakes that would otherwise occur because of the added towing weight. An electric brake controller (sold separately) must be purchased and mounted inside your RV to complete the installation. In addition, you will need a 6-way or 7-way trailer connector on the dolly so that it can receive the braking signal from your RV.

Universal Compatibility

The sliding ramps offer a 47" range of adjustment to ensure a precise fit for almost any vehicle you decide to tow. Also, the included wheel nets adjust to fit tires that are up to 30" outer diameter x 11" wide.

2050-1 Road Master RM3477 Tow Dolly with Electric Brakes - 4,250 lbs

Item # RM-2050-1

Installation Details RM-2050-1 Installation instructions


Ask the Experts about this Roadmaster Trailers

  • Parts Needed to Flat Tow 2015 Manual Transmission Mitsubishi Mirage Behind Motorhome
    A 2015 Mitsubishi Mirage with a manual transmission can indeed be flat towed with the transmission in neutral. For starters, you'll need a base plate, # BX2002 from Blue Ox. For a tow bar, use the Blue Ox Alpha2, part # BX7380. To wire the taillights, I'd recommend a bulb and socket kit like # DM9523047-54 which allows the wiring to remain independent of the vehicles taillight wiring system. It's like using a magnetic mounted tow light set that you'll only need to install once, without...
    view full answer...
  • How To Add License Plate Kit To 2020 Master Tow Dolly
    Some tow dollies like the Roadmaster Tow Dolly part # RM-2050-1 come with a license plate bracket. If the 2020 Master Tow Dolly did not come with a license plate bracket then you can use Trailer License Plate Mount Bracket part # LPL55CB. You will probably need to drill through the fender of the tow dolly or the frame to install it. The bracket does include a LED light to light up the license plate so you would need to splice the black wire into the running light circuit and ground the...
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  • Towing Capacity of 2005 Chrysler PT Cruiser
    You are correct that passenger and cargo weight inside a vehicle does reduce the trailer weight it can tow. A vehicle like your PT that is intended primarily to transport people may not have much trailer towing capacity if you have a full load of passengers and cargo. I checked the online owner's manual for the 2005 PT Cruiser and the manual states (on page 242) the maximum trailer weight is 1000-lbs when the total weight of passengers, luggage and cargo is no more than 865-lbs. This...
    view full answer...
  • Can 2014 Mitsubishi Mirage with Automatic Transmission be Flat Towed
    I did some checking and it looks like your 2014 Mitsubishi Mirage can only be towed with a tow dolly since you have the CVT automatic transmission. You could use the part # RM-2050-1 for that. Tow dollies are typically about the same price as a flat towing setup yet require much less install time and are easily transferred to future vehicles unlike tow bar setups.
    view full answer...
  • Can You Dinghy Tow A 2015 Ford Focus
    Per the 2015 Ford Focus owners manual, "You can tow your vehicle with all four wheels on the ground or with the front wheels off the ground by using a tow dolly. If you are using a tow dolly, follow the instructions specified by the equipment provider." Parts needed to flat tow and some examples include the following. Base plate kit # DM9519324 Tow bar Commander, # DM9511012 Bulb and socket kit, # RM-155 7-Wire to 6-Wire Coiled Electrical Cord w/ 6-Way Round Plug # DM9523054...
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  • Does Roadmaster Tow Dolly with Electric Brakes Require Safety Chain for Vehicle
    You will not need to add safety chains to attach your vehicle to the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1. Like you mentioned, the ratcheting wheel straps are going to be what secures your vehicle to the dolly. The dolly does come with safety chains, but those are for the dolly itself and attach to your motorhome. I have added links to a couple video reviews for you to check out as well of the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1.
    view full answer...
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  • Compatibility of Roadmaster Tow Dolly with 2017 Toyota Highlander XLE with 245/60R18 Tires
    The Roadmaster Tow Dolly with Electric Brakes # RM-2050-1 has the weight capacity to handle the 2017 Toyota Highlander XLE. The wheel size gives you a 29.6 inch diameter wheel that will require different wheel straps. I recommend using the Bulldog Winch Ratcheting Wheel Tie-Down Strap for Extra-Wide Tire - Vertical Mount - 3,335 lbs # BDW20362.
    view full answer...
  • Replacement Spindle, Brakes, and Hubs for Roadmaster Tow Dolly with Electric Brakes RM3477
    In regards to the Roadmaster Tow Dolly with Electric Brakes (RM3477) part # RM-2050-1, the correct replacement spindle is part # RM63FR, the correct replacement braking assemblies are part # RM-4701-R for the passenger side and part # RM-4701-L for the driver side, and the correct brake drum is part # RM43FR. Unfortunately, we don't offer any relay harnesses for this tow dolly as they are not available as replacement parts so you'll need to re-wire this yourself or hire a professional.
    view full answer...
  • Tow Dolly for a 2015 Ford Fusion Hybrid to Tow Behind a Motor Home
    I looked up the online version of the 2015 Ford Fusion Hybrid owners manual and on page 226 it states that you can use a tow dolly to tow your Fusion. Check your owners manual to confirm. We do have a tow dolly, # RM-2050-1, and it will work if your Fusion has tire size 215/60-16. Anything above a 16 inch and it will not fit this tow dolly. I have included a link to the tow dolly instructions for you. To use a tow dolly with electric brakes the RV will also need a brake controller. I...
    view full answer...
  • Recommended Tow Dolly For Towing 2021 Honda CR-V FWD Behind RV
    For your 2021 Honda CR-V FWD I recommend the Roadmaster Tow Dolly with Electric Brakes - 4,250 lbs # RM-2050-1 due to the 4250lb weight capacity being plenty for the 3350-3500lb weight of your vehicle, and it will be plenty wide for your vehicle to be able to drive on. Since the steering wheel on your CR-V does not lock you will just need to wrap the seat belt a couple times around the steering wheel and then buckle it in place. Now pull the seat belt all the way out so that as you let...
    view full answer...
  • Using Tow Dolly With 2016 Ford Edge
    I took a look at the owner's manual for your 2016 Ford Edge to get an idea of what you would need to do when dolly towing with the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1. The only thing mentioned in regards to dolly towing was that "if your vehicle has a steering wheel lock make sure the ignition is in the accessory or on position when being towed." There is no other mention in the manual in regards to being in neutral or the parking brake on or off (though I would assume...
    view full answer...
  • Can 2016 Ford Edge Front Wheel Drive be Towed on Tow Dolly
    I did some checking and your 2016 Ford Edge front wheel drive is towable on a tow dolly like the Roadmaster tow dolly part # RM-2050-1 that you mentioned. The only other thing you'll need is a 7-way upgrade kit part # e99011 which will allow you to add a 7-way to the dolly so that you can control it's included brakes.
    view full answer...
  • How To Flat Tow a 2012 Kia Rio
    I do have an option for you but the 2012 Kia Rio cannot be towed with all four wheels down. However, it can be towed behind your motorhome using a tow dolly, the Roadmaster Tow Dolly with Electric Brakes part # RM-2050-1 is what I recommend. This tow dolly will actually be more cost effective than a full flat-tow setup and it will not cause as much wear on the vehicle as only half of it will be making contact with the road which keeps your front suspension in full working order. The...
    view full answer...
  • Can Roadmaster Tow Dolly Tow 2015 Ford Flex
    As long as your vehicle is front wheel drive there would be no special steps needed to tow your 2015 Ford Flex with the Roadmaster Tow Dolly part # RM-2050-1. You would just need to drive your vehicle up on the dolly, secure it like normal, and then be good to go. Check the owners manual for all towing procedures though. You may need to leave the key in the on position to allow the wheels to turn.
    view full answer...
  • Recommended Way to Tow 2012 Jeep Liberty Sport Behind RV
    I prefer recommending a tow dolly for towing vehicles like your 2012 Jeep Liberty Sport behind and RV as the install is much less invasive, the dolly can easily be transferred to future vehicles unlike some of the flat towing components, and by the time you price everything out plus install time the dolly ends up costing less like with the Roadmaster Tow Dolly part # RM-2050-1. This dolly is easy to load, has a steering axle, and comes with brakes so it's a really great option. To activate...
    view full answer...
  • Recommendation For Towing 2014 Mitsubishi Mirage DE 5 Speed Manual Transmission By Class C RV
    Based on my research, your 2014 Mitsubishi Mirage DE 5 speed manual transmission can not be flat towed behind your RV. It must be towed with a tow dolly like the Roadmaster Tow Dolly, Item # RM-2050-1. Before doing any towing, be sure to check your owner's manual for instructions and recommendations. I have attached some articles and a video to assist you.
    view full answer...
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  • What Is the Tongue Weight of My Tow Dolly
    According to Roadmaster, a tow dolly like the Roadmaster # RM-2050-1 has a tongue weight of roughly 80-lbs because of the way it was engineered. If you've got a different brand of tow dolly, you will want to use a tongue weight scale like the Sherline # 5780 to determine what the true tongue weight of that is.
    view full answer...
  • Is There Enough Clearance to Tow Fiat 500 on Roadmaster Tow Dolly
    Yes, your Fiat 500 has enough clearance to be used with the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1. I also took a look at the wheel size if your Fiat, and from what I can see it will have either 15" or 16" wheels, which are also compatible with the dolly, so you aren't going to have any issues there either. I have added links below to a couple video reviews as well of the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1.
    view full answer...
  • Can 2017 Kia Sorento be Towed with a Tow Dolly
    Yes, your 2017 Kia Sorento can easily be towed on the Roadmaster Tow Dolly part # RM-2050-1. I pulled up your owners manual they state it's fine on the FWD models without special instructions. To add a 7-way so that you can use the dolly's brakes you'll need the part # H20044.
    view full answer...
  • Can a 2011 Mini Cooper S Convertible be Flat Towed Behind a Motor Home
    I checked the owners manual for the 2011 Mini Cooper S and it says, on page 171, that models with the automatic transmission can only be towed with the front wheels off of the ground. This means that you would need a tow dolly, # RM-2050-1. Otherwise, you would need to put the Mini on a trailer. Given that it is a Mini, it would not have to be a very big trailer, just large enough and with a high enough capacity for the vehicle.
    view full answer...
  • Can 2014 Toyota Prius V be Towed with Tow Dolly
    I did some checking and your 2014 Toyota Prius V can be towed on a tow dolly like the Roadmaster kit part # RM-2050-1 that you referenced. Your 2012 Chevy Colorado could have a towing capacity of 1,500-5,500 lbs depending on how it's equipped so you'll need to confirm that based on how your truck is optioned.
    view full answer...
  • Can 2017 Ford Fusion Hybrid Be Recreational Towed On Tow Dolly?
    Your 2017 Ford Fusion Hybrid can be recreational towed with either all four wheels on the ground, or on a trailer with all four wheels off of the ground but cannot be dolly towed per the owner's manual. To recreational tow your Fusion I recommend flat towing it. To do this you will need a base plate kit, tow bar, safety cables, tow bar wiring, and supplemental braking system. I recommended the following components: Base plate kit: Roadmaster Direct-Connect Base Plate Kit # RM-524458-5 Tow...
    view full answer...
  • 2019 MINI Cooper S with Automatic Transmission Compatibility with Tow Dolly and Bike Rack
    Based on your owners manual it does appear you can dolly tow your 2019 Mini Cooper Automatic with the front wheels off the ground but I recommend checking with your dealer for distance or speed restrictions because the owners manual only references emergency towing and gives both a speed and distance restriction of 30 miles and 30 mph with no reasoning behind those restrictions. If you find you are able to tow dolly a 2019 Mini Cooper S, then the Roadmaster Tow Dolly with Electric Brakes...
    view full answer...
  • How to Tow 2015 Jeep JK That Has Snowplow Frame Installed
    Not a stupid question at all. Since the snowplow mount on your Jeep connects to the frame, much like a set of towing base plates does, it is not unreasonable to ask if there is a way to connect a tow bar to this already-installed (and sturdy) mounting point. Good question, but the answer is less good: no, you can't. The plow's mount and virtually any base plate are likely to use the very same or very nearby mounting points on the vehicle frame. That would mean that both of these weight-bearing...
    view full answer...
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  • What is the Best Way to Tow a 2012 Fiat 500 Behind a Motorhome
    According to the owner's manual for a 2012 Fiat 500 with a manual transmission (excluding 500c and 500 Abarth), the vehicle can be flat towed with all four wheels down and dolly towed with either the front two or rear two wheels off of the ground. In regards to which is better between flat-tow and dolly tow, they both have their benefits. If you have a leased vehicle or don't want to make any modifications as you plan to exchange it, dolly tow would be your best option but if you plan to...
    view full answer...
  • Is Trailer Breakaway Kit Required for Tow dolly
    You do ask a good question. A breakaway system is not required when using the Roadmaster Tow Dolly. And yes, there would definitely be a risk of the towed car jackknifing if the dolly brakes engaged after the trailer decoupling. The rear of the towed car could come around sideways and make a bad situation worse. My technical contact at Roadmaster confirmed that the above information is correct.
    view full answer...
  • Adding Electric Trailer Brakes on a RoadMaster Tow Dolly
    There is actually an electric brake kit available for RoadMaster tow dollies with part numbers that start with 2000 or 444. It is part # RM-2000-6. You can use this kit to either replace damaged brakes on your newer RoadMaster Tow Dolly or add them to your older model.
    view full answer...
  • Can 2018 Chevy Equinox All Wheel Driver Model Be Flat or Dolly Towed
    According to the owner's manual, only Diesel AWD models are capable of being flat towed, and AWD equipped vehicles are not capable of being dolly towed. Otherwise, the only way to tow the vehicle without damage is on a trailer. I've done some research, and haven't been able to locate any references that indicate that shutting off the AWD system would enable the vehicle to be dolly towed, I'm sorry to say. If the vehicle is a Diesel, to flat tow it you'd need a tow bar, base plates,...
    view full answer...
  • Can 2016 Ford Flex be Towed On Roadmaster Tow Dolly # RM-2050-1
    Yes, your wheel and tire size is perfectly fine to use with the Roadmaster Tow Dolly part # RM-2050-1 that you referenced. At one point Roadmaster listed this as only fitting up to 16 inch wheels but we've found that's not true currently. The vehicle in the review video I attached has much bigger wheels than that.
    view full answer...
  • Parts Needed to Tow a 2018 Ford Edge Behind a Motorhome
    I checked out the owner's manual for your 2018 Ford Edge and it looks like you can flat tow most variations of the Edge but if you have the 2.0L EcoBoost with an automatic transmission (6F35) then you need to tow it using a dolly or with all 4 wheels off the ground. For the tow dolly option I recommend using the Roadmaster Tow Dolly # RM-2050-1 which has electric brakes. To activate the brakes you will also need a 6-Way connector like part # PK11604 or a 7-Way connector like part # PK12706....
    view full answer...

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