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  1. Tow Bar
  2. Roadmaster
  3. Fits Roadmaster Base Plates - Crossbar
  4. Telescoping - Binding
  5. 6000 lbs
  6. Coupler Mount
Roadmaster StowMaster Tow Bar - Coupler Style for 2" Ball - Car Mount - 6,000 lbs
Roadmaster

Roadmaster StowMaster Tow Bar - Coupler Style for 2" Ball - Car Mount - 6,000 lbs

Part Number: RM-501
$861.21
Retail:$971.55
You Save: $110.34
Tow Bar
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With stainless steel arms, this coupler-style tow bar extends smoothly to reach your ball mount. Mounts to the base plate with quick-disconnects and stores on the front of your vehicle while you drive around town. Great Prices for the best tow bar from Roadmaster. Roadmaster StowMaster Tow Bar - Coupler Style for 2" Ball - Car Mount - 6,000 lbs part number RM-501 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Roadmaster Tow Bar - RM-501

  • Fits Roadmaster Base Plates - Crossbar
  • Telescoping - Binding
  • 6000 lbs
  • Coupler Mount
  • Roadmaster
  • Stores on Car
  • Cables Not Included
  • Steel

With stainless steel arms, this coupler-style tow bar extends smoothly to reach your ball mount. Mounts to the base plate with quick-disconnects and stores on the front of your vehicle while you drive around town.


Features:

  • Safely bring your vehicle along behind your RV
  • Easy hookup with arms that smoothly extend and pivot to reach the ball mount
    • Stainless steel construction of inner arms lets them slide in and out
  • Autowlok mechanism automatically locks the arms into towing position
    • Once at your destination, press the Autowlok button to unlock and disconnect
    • Release tool (RM-066 - sold separately) helps you get out of a bind
  • Quick-disconnect system lets you quickly and easily mount the tow bar on your towed car
    • Brackets on tow bar match up with brackets on base plates
  • Engineered to be super tough
    • FEA testing guarantees a strong finished product
    • Self-lubricated nylon bushings eliminate friction between the inner and outer arms for a longer-lasting, better-functioning system
    • Welded steel plugs seal the ends of the tow bar to guard internal components
    • High-tech powder coat finish protects against rust
    • Full-length crossbar with angle iron brace provides maximum strength and support
  • Secure storage on the front of your car
    • Stays mounted on the base plate as you drive around
  • Made in the USA


Specs:

  • Fits: most Roadmaster Crossbar-Style base plates
    • Will not work with Direct-Connect base plates
    • Can be used with Demco Classic base plates with adapter (DM9523062 - sold separately)
  • Application: 2" ball
  • Arm length (as measured from center of hitch ball to center of quick-disconnect bar):
    • Extended: 44-1/2"
    • Retracted: 36"
  • Weight capacity: 6,000 lbs
  • Weight: 38 lbs
  • Limited lifetime warranty


Smooth Hookup with Stainless Steel Arms

The StowMaster is designed to make hooking up your toad (towed vehicle) a smooth and easy process. The telescoping arms are able to extend to the needed length and angle to reach your RV's ball mount without the need for your vehicle to be perfectly level or in the exact right spot. The inner arms are stainless steel and will slide in and out smoothly. Supremely corrosion resistant, they'll stay rust-free and functional for the life of the tow bar.


What is Autowlok?

Once you're all hooked up, slowly pull forward and the mechanism in the arms will automatically lock into towing position when the arms are fully extended (hence the name Autowlok!). Double check that the arms are properly latched and you'll be ready to hit the road!

Auto lock

Then, when you've reached your destination and you're ready to unhook your vehicle, press the Autowlok release button on the arm of the StowMaster to disengage the internal spring-loaded pin. The arms will be able to telescope again, making it easier to disconnect.


However, if you're on uneven terrain, or if your towed vehicle is not perfectly lined up behind your RV, chances are you'll experience some binding. This is the result of tension that can build up in the telescoping arm, and it can make it difficult to press the button all the way down and disconnect your vehicle. If this happens, a release tool (RM-066 - sold separately) will give you the leverage you need to force the button down.


Simple Storage: Car-Mounted Tow Bar with Quick-Disconnect

Quick-Disconnect

The StowMaster comes with quick-disconnect brackets to make it easy to mount your tow bar to the front of your toad. This crossbar creates a triangular frame so you can maneuver the tow bar as one piece, instead of working with each arm at a time. It also gives you the option to add on other Roadmaster accessories, such as the Guardian Rock Guard or Tow Defender.


FOLDED STOWMASTER

When you're not towing, the Roadmaster StowMaster stays mounted on the front of your car. To store the tow bar, you'll slide the driver's-side arm all the way over to the passenger side and fold the arms down together parallel with the quick-disconnect crossbar. Pin the arms in place and you'll be set to drive around on your adventure; just be careful pulling into a parking spot as you'll need several inches of extra clearance.


Of course, you can also remove your tow bar and stow it away when you're not flat towing. The StowMaster folds into a pretty compact, convenient bundle, and the quick-disconnects will make it pretty easy to pop on and off.


For added protection from the elements, slip the Roadmaster tow bar cover (RM-052-3 - sold separately) over the tow bar when you're not using it.


Engineered for Excellence

FEA test

The StowMaster is engineered to be as tough and durable as possible. Throughout the design process, rigorous physical and computerized testing is done, including Finite Elemental Analysis (FEA). Each of these tests displays a 3-dimensional image of the tow bar while it is put under thousands of pounds of pressure. Areas of stress in the tow bar can then be located and strengthened. This process is repeated until any weak spots, particularly those found in load-bearing components, are completely removed. The result is a product that is durable, strong, and safe.


The internal self-lubricating nylon bushings also help to absorb road shock and reduce wear and tear on the tow bar by eliminating friction between the inner and outer arms as they telescope in and out. Inside each arm, a built-in safety strap provides extra peace of mind by ensuring that the inner and outer arms won't separate in the event of a latch failure.


What You Need to Flat Tow

Flat towing can be a much more convenient way to take your car RVing with you than using a trailer or a tow dolly. It'll save you storage space both at home and at the campsite, and it takes less time and hassle to hook up.


To flat tow your vehicle, there are 5 basic components you're going to need: a tow bar, a base plate kit, a safety cable set, tow bar wiring, and a flat tow braking system.


For the RV Between the RV and Towed Car For the Towed Car
Hitch Tow bar Base plate
Wiring plug Safety cables Braking system
Wiring adapter cord Wiring kit/diodes

The custom-fit base plate installs on the frame of your toad so you can connect the car to your RV with a tow bar. Hook up safety cables between the vehicles to ensure that the toad does not separate from the motorhome if the tow bar becomes detached. Tow bar wiring syncs your vehicle's signal lights with your motorhome's tail lights, as required by law in most states. Finally, the flat tow braking system - also required in most states - activates the brakes in the toad when you hit the brakes in the RV, making for smoother, safer braking, and preventing wear on your motorhome.



501 Road Master Stow Master Coupler-Style Towbar for 2" Hitch Ball - Vehicle Mount - 6K Rating

Installation Details RM-501 Installation instructions


California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

146 reviews
With stainless steel arms, this coupler-style tow bar extends smoothly to reach your ball mount. Mounts to the base plate with quick-disconnects and stores on the front of your vehicle while you drive around town.

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great



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Came quick, fit perfect



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Great prices super fast shipping



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The product was everything I expected and with a great price.I will surely go to this site for other items in the future.



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Great equipment !



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Great to work with!They also get back with you in a timely fashion.



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TwoThumbs up. I have had no trouble with this towbar and it's super easy to fold out and in.



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Absolutely fabulous



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I was very happy that it only took 3 days to receive my order once it was placed. Joanne who helped me in placing my order was very courteous and professional and made sure all my needs were addressed. I look forward to working with Joanne and the etrailer team again in the future.



by:

I purchased the StowMaster from etrailer.com originally because the price was the best I could find. I was surprised at the speed of delivery. The product was installed literally within minutes after opening the box. I have not had an opportunity to use my new tow bar yet but am confident it will perform even better than the oirginal StowMaster tow bar I've been using for 10+ years.



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Very satisfied with my etrailer experience William was very professional and knowledgeable I will definitely be a return customer



by:

I am using this on the front of a UTV to pull around so it is plenty strong for that and is working good. I ordered the pintle version so that I could fabricate a clevis style hitch and use a hitch pin to pull behind a pickup or tractor. I only gave 4 stars because the latch on the left sider sometimes has a hard time latching. I don't know if there is a way to adjust the lock or not.



by:

This is a great towbar! I deliver motorhomes professionally and I did use a Blue Ox that went into the receiver hitch that I had to move from hitch to hitch rain or shine. Now all I have to do is put my small lightweight pintle hitch hook into the receiver and just quickly drop this lunette ring onto it easily, but when I’m not using this at all it’s so easy to just remove the whole towbar from my vehicle. I also like how easy it is to fold up so that it’s all compact and out of the way when it’s stowed on the front of my vehicle. This makes my hooking up and unhooking so quick and easy. The only thing I don’t like is when I end my trip on a downhill or slightly turned it’s hard to get this towbar off of the pintle hitch by myself, but I have done it every time with a little back and forth moving of my vehicle.


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See what our Experts say about this Roadmaster Tow Bar

  • Roadmaster Stowmaster 5000 Serial Number Year Identification
    I spoke to my contact at Roadmaster and while she had a hard time finding your specific serial number in their system she was confident that your tow bar was made in 2010.
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  • What is a Complete Flat Tow Set-Up for My 2000 Acura TL?
    Hello Richard, Happy to get a flat tow set up for your 2000 Acura TL. These are the parts you will need to get the job done: - Base Plate: Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # 1543-1 - Tow Bar: Roadmaster StowMaster Tow Bar - Coupler Style for 2" Ball - Car Mount - 6,000 lbs # RM-501 - Safety Cables: RoadMaster 68" Single Hook, Coiled Safety Cables - 6,000 lbs # RM-643 - Wiring: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled...
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  • Can Roadmaster Stowmaster Tow Bar Flat Tow 2025 Ford Maverick
    Hey Michael, so you can use your Stowmaster part # RM-501 to flat tow your 2025 Ford Maverick but you have to use a crossbar style base plate kit like the part # RM37RR since your Stowmaster can't be used with the Direct Connect style of base plate. Unless you'd be interested in a new tow bar as well.
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  • Does Steering have to be Locked out to Flat Tow a Vehicle Behind a Motor Home
    You would not lock out the steering on the vehicle being flat towed. Doing so would cause the wheels to scrub (drag sideways) when turning. The steering needs to be unlocked and the wheels will turn accordingly and straightened back out when needed. It is sort of like pushing a shopping cart with caster wheels: if the cart is pushed to turn, the wheels will turn, and when pushed straight, the wheels will go back to being straight. I have included 2 helpful links on the right side of this...
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  • Replacement Tow Bar to Flat Tow a 2007 Honda CR-V with Roadmaster Base Plates
    Wow, that's pretty crazy. I'd consider myself pretty lucky if I had a near-miss from a falling Redwood and only had damage to the tow bar. There's definitely a question there. You're looking for an easier to use tow bar to replace the Stowmaster, part # RM-501, that was damaged. You also need to make sure it fits the base plate kit already on your 2007 Honda CR-V. The base plates you have are likely the EZ4 kit, part # RM-521559-4, that works with the Stowmaster. For a hitch mount...
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  • Parts Needed to Flat Tow 2003 Jeep Liberty With Roadmaster StowMaster
    The Roadmaster StowMaster # RM-501 requires crossbar-style base plates. A complete setup for your 2003 Jeep Liberty will require a base plate kit, tow bar wiring, and a supplemental braking system. I'm not entirely sure what you own beyond the tow bar and the safety cables so I apologize if I'm listing something you already have. I recommend the following: -Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521423-4. -Roadmaster Diode 7-Wire to 4-Wire Flexo-Coil Wiring Kit...
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  • Will a Roadmaster StowMaster Tow Bar Work With a Demco Base Plate on a 2012 Jeep Wrangler?
    The Demco Base Plate # DM9519292 that was installed on your 2012 Jeep Wrangler is going to require a Demco compatible Tow Bar # DM9511012. It is not compatible with your StowMaster Tow Bar # RM-501 as you have to have a Crossbar Style Base Plate # RM-521448-4 for the tow bar to attach.
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  • Can Roadmaster Tow Bar Connect to Jeep Wrangler with Sunpie Bumper
    Hey Mauricio, I checked out your Sunpie front bumper and it has D-rings on the front of it that would be your best option for attaching a tow bar too. So for that you'd need the D-ring adapter part # RM-035-1 which would attach directly to them. You would need to use a tow bar that stores on the motorhome though like the Falcon 2 part # RM-520. The RM-501 would not work with this adapter.
    view full answer...
  • Will the Roadmaster Crossbar-Style Base Plate Kit Work with My Roadmaster Stowmaster Tow Bars?
    Hello Jeffrey, Happy to confirm these parts for you. The Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-524430-4 is going to be a great fit for your 2013 Ford Focus just as long as you do not have the ST model. Your Roadmaster Stowmaster tow bars like # RM-501 are compatible with that base plate because the stowmaster tow bars have the quick disconnect bar attached to them. You are going to need to bolt up the brackets from the quick disconnect to the base plate, I highlighted...
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  • Recommended Towing Setup 4 Down Behind RV for 2000 Ford Ranger
    For your 2000 Ford Ranger with manual transmission, it is flat towable but not recommended to exceed 55 mph. For your flat towing system, I recommend starting with the Roadmaster XL Base Plate Kit - Removable Arms # 483-1 which are a custom fit for your truck. Then I recommend using the Roadmaster StowMaster Tow Bar - Car Mount - 2" Ball - 6,000 lbs # RM-501 which will allow you to use a standard ball mount behind your motorhome and will stow on the front of your Ranger when not in use...
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    Image 1 for Image 2 for
  • Tow Bar Adaptor Needed for Roadmaster StowMaster Tow Bar to Demco Base Plate Kit
    The Roadmaster StowMaster Tow Bar # RM-501 that you are currently using has arms that are fixed to the quick-disconnect system. Since the RoadMaster Tow Bar to Demco Base Plates Adapter # RM-034 connects to the arms individually you will need to upgrade your tow bar to a system like the Falcon All Terrain # RM-522 which allows you to take the quick-disconnect system off. I wish there was an adapter for the StowMaster, but it was designed to be cost-effective so some of the extra features,...
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  • Will The Roadmaster StowMaster 501 Tow Bars Fit a 2011 Jeep Grand Cherokee?
    You nailed it Ryan. The Roadmaster StowMaster Tow Bar # RM-501 will work on your 2011 Jeep Grand Cherokee by attaching to the Roadmaster Crossbar-Style Base Plate # RM-521440-4 you found. We don't fit guide the tow bars since there are so many different vehicles they can fit but that is also determined by the base plate being used. The StowMaster # RM-501 will fit all vehicles which are able to be fitted with a Roadmaster Crossbar style base plate. We do have the Accessory Kit # RM-9252...
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  • Recommended Components Needed To Flat-Tow 2012 Jeep Wrangler Rubicon Behind Motorhome
    You can quickly tell the difference between the All Terrain and the Standard StowMaster tow bar. If you have square bars and it has push buttons, you have the standard StowMaster. If your tow bar has round bars it is the all-terrain. There will be no difference in the performance of the tow bars. The all-terrain is easier to put on and remove. If you need the balance of the items needed for flat-towing your Rubicon I can make some recommendations that will work for you. You need a total...
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  • Recommended Base Plate Kit for a 2015 GMC Canyon W/ a Roadmaster StowMaster Tow Bar
    Hey Steve thanks for stopping in! To tow your 2015 GMC Canyon behind your motorhome you'd just need the Roadmaster Crossbar-Style Base Plate Kit # RM-523182-4 which will work wonderfully with your Roadmaster StowMaster # RM-501. If you need anything else, please feel free to drop a comment and let me know!
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  • Correct Base Plate to Tow 2015 GMC Canyon with Roadmaster StowMaster Tow Bar
    The base plate kit you need for your 2015 GMC Canyon so it's compatible with the Roadmaster StowMaster Tow Bar # RM-501 is the Roadmaster Crossbar-Style Base Plate Kit # RM-523182-4. This kit is directly compatible with the StowMaster but if you're missing the Quick Disconnect adapters or need to replace them you can find them as part # RM-222. For a complete flat towing setup you will need a base plate kit, tow bar, safety cables, vehicle tow bar wiring, a supplemental braking system,...
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  • Base Plate Recommendation for 2019 Jeep Cherokee for Use with Roadmaster Stowmaster
    Yes, the Roadmaster base plate kit part # RM-521452-4 is a confirmed fit for your 2019 Jeep Cherokee and would work well with your Roadmaster Stowmaster part # RM-501.
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  • Tow Bar Recommendation for Blue Ox Base Plate Kit on a 2011 Ford Fiesta
    Great question! The Blue Ox Base Plate Kit # BX2622 for your 2011 Ford Fiesta has a distance of 20" between the brackets while the Blue Ox Acclaim Non-Binding Tow Bar # BX4330 is compatible with brackets that are spaced 23" - 30" apart so we'll need to get you a different tow bar. For your application I recommend going with the etrailer SD Non-Binding Tow Bar for Blue Ox Base Plates # e47ZR which will work with the Blue Ox Base Plate Kit and it stores on the hitch receiver of your motorhome....
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  • Recommended Flat Towing Components For A 2016 Kia Soul
    Hi Juan, You'll want to double check your owner's manual to confirm that your specific model can be flat towed first. If it can not and the manual states that you can dolly tow instead then you can use the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1. Typically the manual transmission model will be able to be flat towed and the automatic transmission models will need to be dolly towed. If it can be flat towed then I have the following flat towing component recommendations: Baseplate:...
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  • Parts Needed to Flat Tow a 1966 Volvo 122S Wagon Behind a 2017 Honda Ridgeline
    Normally the first thing you would do is consult the vehicle owner's manual on whether or not your 1966 Volvo 122 can be towed with all 4 wheels on the ground. But I doubt they covered that back in 1966. The curb weight of your Volvo is approximately 5,300 pounds so the Stowmaster's 6,000 pound rating can handle that. However there aren't any custom fit base plates to attach to the front of the Volvo. I would usually recommend going with Blue Ox universal base plates, # BX88266, but they...
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  • Will The Roadmaster StowMaster Tow Bar Work on a 2010 Hyundai Tucson?
    To use your Roadmaster StowMaster # RM-501 on your 2010 Hyundai Tucson you will need to find a Roadmaster base plate kit 1628-1 as we no longer carry this. If you are unable to find this I recommend using the Demco Base Plate # DM9518277 with our etrailer SD Non-Binding Tow Bar # e34ZR. You will need a Wiring Kit # RM-15267 if you do not already have Magnetic Tow Lights # TLL21RK you use with your other vehicle. A braking system like the Brake Buddy Select 3 Portable Supplemental Braking...
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  • Can The Roadmaster StowMaster Tow Bar Be Converted To Connect To A Pintle Hitch
    Yes, you can replace the 2" ball coupler of the StowMaster # RM-501 with the Replacement Coupler Arm Assembly for Roadmaster StowMaster with Lunette Ring # RM-C001890 for a 2-1/2" ID lunette ring.
    view full answer...
  • Recommended Base Plate for a 2014 Honda CR-V
    I sure can. The Roadmaster StowMaster 5000 Tow Bar like our item # RM-501 uses a crossbar style base plate. The correct one for your 2014 Honda CR-V is the Roadmaster Crossbar-Style Base Plate Kit item # RM-521567-4. I have linked an installation video below to help you get it set up. I have also attached the instructions. Some other parts you will need to flat tow your 2014 Honda CR-V are listed here: Wiring Harness - Wiring Harness - Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring...
    view full answer...
  • Recommended Base Plate for a 2007 Jeep Wrangler
    The Roadmaster StowMaster Tow Bar item # RM-501 uses a crossbar style base plate. The correct one for your 2007 Jeep Wrangler is the Roadmaster item # 1429-1 if you have the standard factory bumper or item # 1430-1 if you have the Mopar or Warn bumper. I have linked an installation video below for the first one to help you get it set up. I have also attached both sets of instructions. Some other parts you will need to flat tow your 2007 Jeep Wrangler are listed here: Battery Disconnect...
    view full answer...
  • Roadmaster Base Plate Kit that Fits 2023 Jeep Wrangler and Stowmaster Tow Bar
    For your 2023 Jeep Wrangler and Roadmaster Stowmaster part # RM-501 the correct base plate kit would be the Crossbar kit part # RM-521453-4. For lighting you can use the diode kit, # RM-15267, and not have to worry about cutting into the taillight housing. This will splice into your taillight wiring to allow your tow vehicle to control the taillight assemblies of the towed vehicle. This comes with a round 6-way connector that you will install on the front of your towed vehicle and enough...
    view full answer...


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