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Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Item # RM-524431-4
Our Price: $460.75
You Save: $24.25
Base Plates

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Product Expert Mike S

Is this right for you? Product Expert Mike S says:

Yes, if you:

  • Are a DIYer and want a simple install
  • Have a hitch-mounted or car-mounted tow bar from Roadmaster
  • Value the protection of a lifetime warranty

No, if you:

  • Own a tow bar that's not from Roadmaster and don’t want to have to buy an adapter separately
Roadmaster's crossbar-style brackets are virtually invisible, easy to mount and simple to remove. Brackets install on your vehicle's frame to provide attachment points for your tow bar. 1-800-940-8924 to order Roadmaster base plates part number RM-524431-4 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Crossbar-Style Base Plate Kit - Removable Arms. Base Plates reviews from real customers.
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  • Reviews (767)
  • Q & A (0)
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  • Why etrailer?

Roadmaster Base Plates - RM-524431-4

  • Removable Drawbars
  • Roadmaster
  • Twist Lock Attachment

Roadmaster's crossbar-style brackets are virtually invisible, easy to mount and simple to remove. Brackets install on your vehicle's frame to provide attachment points for your tow bar.


  • Hidden bracket design provides improved aesthetics compared with standard brackets
    • Crossbar-style brackets sit far back for a supremely clean look
  • Drawbars attach and remove quickly and easily
    • Arms click to lock in place in brackets
    • Built-in pull rings let you unlock arms so you can twist and remove them
  • Computer-cut, all-steel construction provides exceptional strength
  • Black powder coat finish is durable and corrosion resistant
  • Simple installation - no welding required
    • Custom base plates ensure a perfect fit for your vehicle
  • Integrated mounting points let you easily attach an electrical connector plug or bracket (sold separately)
  • Compatible with Roadmaster tow bars with use of quick-disconnect crossbar (910021-00 - sold separately)
  • Instructions and mounting hardware included
  • Made in the USA
  • Limited lifetime warranty

The drawbars, or front arms, on the crossbar-style series base plate kit are supremely easy to mount and remove. Just insert them into the brackets and twist to lock them in place. To remove, simply twist the arms back and pull them out. Once the drawbars have been removed, the remaining brackets are virtually invisible. On most automobiles, the brackets are mounted within the grille, where they remain not only unseen, but protected from scrapes and scuffs, as well.

524431-4 Roadmaster EZ4 Base Plate Kit - Removable Arms

Replaces 4431-1A Roadmaster XL Base Plate Kit - Removable Arms

Installation Details RM-524431-4 Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms - RM-524431-4

Average Customer Rating:  4.8 out of 5 stars   (767 Customer Reviews)

Roadmaster's crossbar-style brackets are virtually invisible, easy to mount and simple to remove. Brackets install on your vehicle's frame to provide attachment points for your tow bar.


This was the easiest baseplate I have ever installed, and this was the third vehicle I have put one on. Only one hole has to be drilled in each frame member and the rest are bolts. This works great and it hides away well so that nothing is sticking out when you’re not using it.

2019 Ford F-150

Watched the videos of the install.. Uber easy. Was able to do by myself in about an hour and fifteen minutes. I recommend running the bolts through all the tab nuts before trying to assemble (clean the paint out of threads) Otherwise easy peasy. Spoke to customer service pre-sale to make sure I had everything. Rep was very understanding and found the listings for the parts I needed and put them all in a cart for me. Will continue to shop etrailer FIRST as install videos and customer support are in a league of their own and miles above everyone else.


Fit perfect easy install fast shipping unfortunately I sold the truck and now I have to buy a kit for my 2021 jeep JL


These are very high quality!


I purchased the Roadmaster Crossbar-Style Base Plate Kit w/ Removable Arms, The Roadmaster Nighthawk Tow Bar, Quick Disconnect Crossbar, Universal Hy-Power Diode Wiring Kit, and Roadmaster Guardian Rock Guard in order to tow my 2020 Ford Raptor behind my Class A. Everything bolted on beautifully and the craftsmanship was fantastic. Ordering from etrailer was easy and the parts arrived within a few days with no problem. I watched numerous [online] videos to learn how to install everything and they saved me a lot of time. Overall, I'm very happy.


Typical excellent Roadmaster quality. I installed these myself in something less than two hours. These are very heavy duty and give me confidence that my 2016 F150 will stay attached to my motorhome using the Roadmaster Sterling towbar.
I am very happy with the purchase and the service I get from etrailer.


Base plate was an exact fit for my vehicle and has Worked as expected.

Product has held up well and works as advertized
Rob R - 06/02/2021


I shop here for my towing needs as they have quality products and great customer service.

2018 Ford F-150

I installed all the products that were purchased from with the assistance of the videos. It was helpful and it saved me from having to pay someone to do the work for me. is a great website to purchase all one's needs for towing equipment.

Thank You


I was well pleased with the service, It was right and on time.


Great product from Roadmaster and The package was packed wonderfully. Highly recommend for towing needs!

2017 Ford F-150

I made a mistake and ordered the wrong part. The staff at customer service was very helpful, and I reordered and returned the wrong purchase without incident.
I would definitely recommend etrailer for all your towing needs.


Product arrived in good condition with all necessary components, well made and fit good. The directions were fairly good, but did have some vague spots requiring me to find a [installation] video for clarification thusly the 4 star rating.


Too about 4 hours total to install. All materials and parts were included. Would highly recommend to anyone looking to flat tow a vehicle.

2013 Ford F-150

Very straight forward installation on 2013 F150 King Ranch EcoBoost. Easy to follow instructions.


Easy to install bolt on had to ream two holes as stated in instructions. Very easy.

Ford F-150

I will be installing this on Friday Aug 14th, I have it laid out and ready to go. This is a very high quality product. Thanks!!

2015 Ford F-150

great product, instructions were easy to follow, istallation went well about 2 hours.


This product is excellent the fitment is perfect the installation was very Easy I would recommend to all.


The product was easy to install. Work as advertised. Great Quality!


Were easy to install. Only one hole on each side to drill on the 2019 F150





Show More Reviews

See what our Experts say about this Roadmaster Base Plates

  • Will Roadmaster EZ4 Base Plates Work With Roadmaster Eagle Tow Bar On 2016 Ford F-150
    The Roadmaster Base Plate Kit, part # RM-524431-4 is a confirmed fit for your 2016 F-150. This kit will work with motorhome mounted tow bars like your Roadmaster Eagle tow bar does, I've confirmed that with one of our Roadmaster reps. I've linked you to an FAQ article that includes all kinds of information about flat towing your vehicle, including how to determine what other accessories you might need.
    view full answer...
  • How to Place Transfer Case in Neutral for Flat Towing a 2018 Ford F-150
    According to the owner's manual for a 2018 Ford F-150 you will need to do the following for a 4WD to get it in the Neutral position for flat towing: 1 - Put the ignition in the on position, but do not start the engine. If your vehicle has an ignition key, turn the key to on. If your vehicle has intelligent access, press the engine START/STOP button once without pressing the brake pedal. 2 - Press and hold the brake pedal. 3 - Rotate the four-wheel drive switch to 2H. 4 - Shift the transmission...
    view full answer...
  • Does Roadmaster Base Plate Kit # RM-524431-4 Fit 2018 Ford F-150 EcoBoost
    Roadmaster has confirmed for us that the base plate kit part # RM-524431-4 that you referenced does fit the EcoBoost models of your 2018 Ford F-150. The arms of the kit come out below the front bumper of the truck where the tow hooks normally are at so the license plate would not be an issue. I looked up as many pictures as I could find that showed the front end of your truck and was not able to see any ecoboost models that had a license plate covering where the base plate kit would install.
    view full answer...
  • Flat Towing a 2010 Ford F-150 4x4 with Electronic Transfer Switch
    To flat tow your 2010 Ford F-150 4x4 with electronic Shift-On-the Fly 4WD transfer cases cannot be flat towed without a Lube Pump Kit. You will need part number LP-BK01-021 for the 6R80 transmission. I've linked an article to help further if needed.
    view full answer...
  • Recommended Base Plates For 2017 Ford F 150 Super Crew Cab King Ranch Compatible With Falcon Towbar
    The Roadmaster EZ5 Base Plate Kit - Removable Arms # RM-524431-5 will fit your 2017 Ford F-150 and your Falcon Tow Bar, however they will not work with your Rock Shield. For baseplates that will work with your Rock Shield, I recommend the Roadmaster EZ4 Base Plate Kit - Removable Arms # RM-524431-4. For your wiring, the Roadmaster Universal Hy-Power Diode Wiring Kit # RM-154 you asked about will work as it is a confirmed fit. If you have more questions about your flat tow setup or...
    view full answer...
  • Tow Bar Recommendation for 2016 Ford F-150 Towing 2016 Ford F-150
    The Roadmaster Falcon 2 part # RM-520 would be a great tow bar for flat towing your 2016 Ford F-150 as it weighs less than the capacity of the tow bar and because this is one of the nicest tow bars around. You are also correct that the part # RM-524431-4 does not require the use of a crossbar.
    view full answer...
  • How Do You Twist the Arms On the Roadmaster Crossbar-Style Base Plate Kit With Crossbar Attached
    If you are using a tow bar with a crossbar like the Roadmaster Sterling All Terrain Non-Binding Tow Bar part # RM-576 on a crossbar style base plate kit like the Roadmaster Crossbar-Style Base Plate Kit part # RM-524431-4 (For 2017 Ford F-150 Only) then you would use the quick-disconnects on the crossbar to release it from the base plates as that would then allow you to twist the arms out for removal. Basically, you will remove the pins from the top of the quick-disconnect plates (see photo)...
    view full answer...
    Image 1 for
  • Roadmaster Base Plate Kit that Fits 2018 Ford F-150 with Roadmaster Falcon Tow Bar
    Yes the Roadmaster base plate kit part # RM-524431-4 is a fit for your 2018 Ford F-150 and would work great with the Roadmaster Falcon tow bar part # RM-520.
    view full answer...
  • Difference Between Crossbar Style Baseplate and Direct Connect Baseplate Towing 2019 Ford F-150
    The main difference between the Roadmaster Crossbar Style Baseplate # RM-524431-4 and the Roadmaster Direct Connect Baseplate # RM-524431-5 comes down to the ease of installation of the tow bars; typically vehicles that require some extra stability will only have the crossbar style available. Crossbar style tow bars are traditionally going to be much heavier and more difficult to install on the tow vehicle than the direct connects, but once you're pulling I don't think you'll notice a considerable...
    view full answer...
  • Which Roadmaster Crossbar Style Base Plates for 2014 Ford F-150 with EcoBoost
    I have a solution for you, but the Roadmaster # 495-1A are not designed for any 2014 F-150's with EcoBoost. If your F-150 has EcoBoost then you'll want to use the # RM-524431-4 instead. These are compatible with Roadmaster tow bars.
    view full answer...
  • Roadmaster Crossbar-Style Base Plate Kit with Removable Arms for 019 Ford F-150
    The Roadmaster Crossbar-Style Base Plate Kit with Removable Arms, # 495-1A, is not a confirmed fit for a 2019 Ford F-150. You will want the Roadmaster Crossbar-Style Base Plate Kit - Removable Arms, # RM-524431-4.
    view full answer...
  • Parts Needed to Flat Tow a 2018 Ram 1500 Behind an RV with UTB 1000 Supplemental Braking System
    Since you already have a supplemental braking system there are just 4 additional major components you will need to flat tow your 2018 Ram 1500: base plates, tow bar, safety cables, and lighting. For base plates you can use # RM-52289-4. It will work with Big Horn models, Laramie models, and Laramine Longhorn models as well as several other models of the 2018 Ram 1500 including those with the EcoDiesel motor (if that is the type of diesel motor that is in your Ram). For a tow bar you...
    view full answer...
  • Can The Arms From The Roadmaster Direct-Connect Base Plate Kit Be Used On The Crossbar Style Kit?
    You would not be able to swap the arms from the Roadmaster Direct-Connect Base Plate Kit # RM-524431-5 with your Roadmaster Crossbar-Style Base Plate Kit # RM-524431-4 as the arms for these base plates are made specifically for those base plates. However, If you have the Blackhawk 2 All Terrain # RM-422, Falcon 2 # RM-520, Falcon All Terrain # RM-522, Nighthawk All Terrain # RM-676, Sterling All Terrain # RM-576 tow bars, then you can just use the adapter # 910021-00 to be able to use...
    view full answer...
  • Parts Needed to Flat Tow 2021 Jeep Wrangler Unlimited and 2019 Ford F-150
    The first thing you'd need is a base plate kit like the Roadmaster part # RM-521453-4 for the 2021 Jeep Wrangler Unlimited and then for the 2019 Ford F-150 you'd want the # RM-524431-4. Then for a tow bar with enough weight capacity for either vehicle the Roadmaster Falcon part # RM-522 would be a really great option. For an easy to use supplemental braking system that's removable the best option is the Blue Ox Patriot part # BLU37TR. Then for wiring the part # RM-15247 would work great.
    view full answer...
  • Confirming Flat Tow Components for 2019 Ford F-150 4x4
    You have done your homework for your 2019 Ford F-150 4x4. You can use either the Roadmaster EZ5 # RM-524431-5 base plates or the EZ4 # RM-524431-4. The difference is the EZ5 directly connect to the tow bar and the EZ4 will use a crossbar for connection. So specifically with the Nighthawk tow bar # RM-676, I recommend the EZ5 # RM-524431-5 because the crossbar doesn't come with that tow bar. This tow bar also comes with the umbilical cord and safety cables, so you won't need to get those...
    view full answer...
    Image 1 for
  • Is There an Installation Video Available for Roadmaster Crossbar-Style Base Plate Kit # RM-524431-4
    You do not have to bolt and unbolt the drawbar every time. The tow bar disconnects from your truck but you can leave it installed on your motorhome when you are not towing your 2017 Ford F-150. You may want to consider a locking hitch pin to deter theft of your tow bar. I recommend the etrailer Hitch Receiver Lock for 2" and 2-1/2" Hitches - Flush - 3-5/8" Span - Chrome # e98881. We do need to verify your F-150 can be flat-towed, if it is a 4-wheel drive it can be flat-towed. If it is...
    view full answer...
  • Parts Needed to Flat Tow a 2015 Ford F-150 Behind a Moving Truck
    There are 5 major components needed to flat tow a vehicle: base plates, tow bar, safety cables, lighting, and supplemental braking. For base plates I recommend # RM-524431-4 because they are compatible with more accessories than the other option. The Stowmaster tow bar # RM-501 will fit the above mentioned base plates so no worries there. You may also need a high-low adapter to keep the tow bar level. I have included a link to a help article that explains how to measure to determine the...
    view full answer...
  • Tow Bar and Other Parts Needed to Flat Tow a 2016 Ford F-150 Lariat Behind an RV
    The Roadmaster Falcon 2 # RM-520 has a maximum weight capacity of 6,000 pounds. From my research the 2016 Ford F-150 does not exceed that amount so the tow bar will be just fine with the F-150. To flat tow the F-150 you'll also need base plates, wiring, a supplemental braking system, and likely a high-low adapter. To connect to the Falcon 2 you'll be best off with a Roadmaster base plate kit. The EZ4 # RM-524431-4 is confirmed to fit your truck and the tow bar. To power the truck's...
    view full answer...
  • Is Roadmaster Quick Disconnect Assembly Needed for 2014 Ford F-150 4x4?
    The Roadmaster BlackHawk 2 All Terrain, Non-Binding Tow Bar - Motorhome Mount - 2" Hitch - 10K # RM-422 only needs the quick connect crossbar when connecting to certain baseplates. For instance, if your 2014 Ford F-150 4x4 has baseplates # RM-524431-4 or # 495-1A then you will need that crossbar but if you have baseplates # 495-3A or # RM-524431-5 then you will not use it. The baseplates will dictate if the Replacement Quick Disconnect Crossbar Assembly for Roadmaster Motorhome Mounted...
    view full answer...
  • Roadmaster Crossbar-Style Base Plate Compatibility With A Roadmaster StowMaster 5000 Tow Bar
    The Roadmaster Crossbar-Style Base Plate Kit # RM-524431-4 is compatible with a Roadmaster StowMaster 5000 tow bar and is compatible with your 2016 Ford F-150, however you will need a higher rated weight capacity tow bar to tow an F-150 than the StowMaster 5000. I recommend the Roadmaster Falcon 2 Tow Bar # RM-520. The large hookup radius makes connecting a breeze at any angle, even if your vehicle isn't perfectly lined up with your RV. It has a self-aligning design, you'll just hook up...
    view full answer...
  • Can 2015 Ford F150 Truck Be Flat Towed Behind a Motorhome
    If your 2015 Ford F150 is a 4WD model with a neutral position in the transfer case, you can flat tow the truck by engaging the 4 wheels down towing feature as described in the owner's manual. 2WD vehicles cannot be flat towed. When I looked up the curb weight of the 2015 Ford F150, I saw that the curb weight ranged from about 4000 to 5000 lbs. As long as the weight of the truck comes in under the 5000 lb capacity of the hitch, and the truck meets the parameters mentioned above, you'll...
    view full answer...
  • Flat Towing a 2018 Ford F-150 STX Behind an RV
    Your 2018 Ford F-150 STX can be towed behind an RV if it is a Four-Wheel drive model. You'll want to follow the instructions in your vehicle's owner's manual to the letter, as it uses a function of your electric shifting case to switch into a specific towing compatible mode and then back again to a driving mode. If you do have a four-wheel drive model, then you'll need a base plate, tow bar, tow bar wiring, and a supplemental braking system. For the base plate, I recommend Road Master's...
    view full answer...
  • Recommended Components for Flat Towing a 2018 Ford F-150 Platinum
    For your 2018 Ford F-150 Platinum, I recommend the Roadmaster EZ4 Base Plate Kit - Removable Arms # RM-524431-4 along with the Roadmaster BlackHawk 2 All Terrain, Non-Binding Tow Bar - 10K # RM-422 and safety cables # RM-653. For your braking system the SMI Air Force One Supplemental Braking System for Motor Homes with Air Brakes - Proportional # SM99243 is an excellent option. The engine brake will create deceleration which when used with the brake pedal will cause trailer braking that...
    view full answer...
  • Recommendations for Flat Towing 2018 Ford F-150
    As long as you have all the components needed for flat towing, and they are all properly rated for the 2018 Ford F-150, you will not have any issues pulling this vehicle behind your Tiffin RV. There is no need to go to a lighter vehicle if a Ford F-150 is what you truly are wanting. In order to flat tow any vehicle, you will need a base plate kit, tow bar, safety cables, tow bar wiring, and a supplemental braking system. If you do end up deciding on the 2018 Ford F-150, recommendations...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Joshua S
Video by:
Joshua S
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Video Edited:
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Employee Chris R
Video Edited:
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Test Fit:
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Employee Mike S
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