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  1. Tow Bar Base Plate
  2. Roadmaster
  3. Removable Draw Bars
  4. Twist Lock Attachment
  5. Partially Hidden
THIS ITEM IS NOT A FIT FOR
1990 Jaguar XJS
etrailer Installation
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Roadmaster

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Part Number: RM-524447-4
In Stock
$575.00
Retail:$632.50
You Save: $57.50
Tow Bar Base Plate
Not Confirmed to Fit

1990 Jaguar XJS

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
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. Great Prices for the best tow bar base plate from Roadmaster. Roadmaster Crossbar-Style Base Plate Kit - Removable Arms part number RM-524447-4 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (2209)
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Roadmaster Tow Bar Base Plate - RM-524447-4

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • Ready for Flat Towing: Installs on the frame to create secure attachment points for your tow bar.
  • Blends In When Not Towing: Hidden bracket design leaves only low-profile mounts visible once arms are removed.
  • Quick Hookups: Twist-lock arms click into place for fast connection and unlock with built-in pull rings.
  • Built to Last: Computer-cut, all-steel construction with black powder coat resists rust and corrosion.
  • Easy Setup: No welding required and includes mounting hardware and instructions for straightforward installation.
Made in USA

Features to know about

Made for a Clean Front End: Hidden Crossbar-Style Design

When the removable arms are out, the remaining brackets are virtually invisible for a clean, factory look. The brackets sit far back within the grille, keeping them out of sight and protected from scrapes and scuffs. It’s a simple way to keep your front end looking uncluttered when you’re not towing.

Quick Hookups Every Time: Twist-Lock Removable Arms

Each arm slides into the bracket, clicks to lock in place, and releases with a quick twist using the built-in pull rings. The process is fast and repeatable—no tools needed and no wrestling to line things up. When you’re done towing, just twist and remove the arms for an instant return to normal driving.

Strong Where It Counts: Computer-Cut, All-Steel Build

The brackets are made from computer-cut, all-steel components for exceptional strength and precise fitment. A black powder coat finish resists corrosion and keeps it looking sharp through years of use. The sturdy construction spreads the towing load evenly through the frame for solid stability on long hauls.

Straightforward Setup: Bolt-On Fit with No Welding Required

This kit installs directly to the frame with included hardware—no welding needed. Custom base plates ensure a proper fit, and integrated mounting points make it simple to attach an electrical connector plug or bracket (sold separately). Clear instructions walk you through each step so you can get it installed and ready for travel without extra fabrication.

Compatible with Roadmaster Tow Bars: External Crossbar Connection

This base plate works with Roadmaster tow bars that use a quick-disconnect crossbar (910021-00, sold separately). Once connected, you can remove both the tow bar and crossbar together or store them as one unit—whichever fits your setup best. It’s built for flexibility whether you’re hooking up for a trip or packing everything away after.

Specs

Construction and Design

  • Bracket style: Crossbar-style
  • Bracket design: Hidden for improved aesthetics compared with standard brackets
  • Construction material: Computer-cut, all-steel construction
  • Finish: Black powder coat finish is durable and corrosion resistant
  • Base plate fit: Custom base plates ensure a perfect fit for your vehicle
  • Mounting points: Integrated mounting points let you easily attach an electrical connector plug or bracket (sold separately)
  • Attachment mechanism: Twist Lock Attachment
  • Removable draw bars: Yes — arms click to lock in place and can be twisted to remove
  • Visibility when installed: Partially Hidden; remaining brackets are virtually invisible when drawbars are removed

Compatibility and Installation

  • Tow bar compatibility: Compatible with Roadmaster tow bars with use of quick-disconnect crossbar (910021-00 - sold separately)
  • Installation type: Simple installation - no welding required
  • Included components: Instructions and mounting hardware included
  • Made in: USA
  • Warranty: Limited Lifetime Warranty

524447-4 Road Master EZ4 Base Plate Kit

Installation Details RM-524447-4 Installation instructions

This Product Fits The Following Vehicles

  • 2016 - 2018 Lincoln MKX EcoBoost - with Adaptive Cruise Control
  • 2016 - 2018 Lincoln MKX EcoBoost - without Adaptive Cruise Control
  • 2016 - 2018 Lincoln MKX non-EcoBoost - with Adaptive Cruise Control
  • 2016 - 2018 Lincoln MKX non-EcoBoost - without Adaptive Cruise Control



Ratings & Reviews

4.8

2209 reviews
5 Stars
(1862)
4 Stars
(261)
3 Stars
(48)
2 Stars
(13)
1 Star
(25)
Review sort icon
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.

by:

Purchased for a 1997 Subaru Impreza. Delivery was amazingly fast! I didn't have it installed until a few months later, as my travel plans had stalled. It didn't quite bolt right on, but was close, and a friend had to modify it some to make it work. I still hear a grating noise when I turn too sharp on one side, but otherwise it's fine.
The front connection plates didn't line up with the holes, so had to have those modified, as well, in order to line up and attach to the tow bar. Once the new holes were drilled, I was able to hook up and go.
It's relatively easy to connect after finding a way to do it alone.
I've towed from CO to TX and all over TX with it with no problems.



by:

I’ve been purchasing products from ETrailer since 2005 and all the products I’ve purchased have been a great value. The products mentioned above installed perfectly and with the direct assistance from ETrailer everything fit as suggested. I will always interact with ETrailer as needs present themselves.



by:

Fit and finish is great, the illustration for what you trim on the bumper isn't great but otherwise pretty easy install (I ended up measuring between the mounts on the draw bar and just trimmed accordingly)



by:

After ordering the wrong crossbar, etrailer sent the correct one for our Mini Cooper quickly. However I did have to modify most of the holes as the cross bar didn’t quite fit (but close). I had to drill the three main bolt holes to 11/16 so that the bar would go over the Mini’s 3 main bumper bolts on both sides. The two lower bolt holes (each side), needed to be drilled out 3 sizes larger to accommodate the 4 bolts that come with the kit. I had to drill out the Minis lower holes to better align with the crossbars lower holes. I would also like to note it being a pain in the knuckles to reach one of the three (each side) bolts to put the stock nuts on the bolt and then try and get them tight. (The main bolt pattern for the upper bumper is diamond shape, one up tow bolts lower. (The lower “inside” bolt on each side is the one that is hard to get to and tighten.) Sorry I didn’t get picks, I was in a rush to get the car back together. There’s an angle piece on the cross bar that blocks the hard to reach bolt, it would be helpful if that could be made more accessible to reach.



by:

Overall the installation was great, however the process of drilling 3 - 1/2" holes in that little bumper that has a Rockwell Hardness of about 60, seems to be a bit over the top.The instructions are spot on, delivery was great, the quality of product was accurate. I am a happy boy!



by:

Replaced same part that was damaged in a crash. I had used my original one for close to ten years without issue. Fast shipping from etrailer.



by:

The Base plate kit is well made and came with all the necessary hardware.Installation is relatively straight forward. I did have to enlarge two of the holes that didn't quite line up. But overall I'd recommend it.



by:

Bolted right up. Installation should be done with bumper on, as you can't fit the ends through the louvers without some convincing. Works great so far. Was able to use a Stowmaster 5000 with it.



by:

Installation was a bit trying. Ended up looking very clean and almost invisible.
Using the tow bar worked super easy and our motorhome hardly noticed the Mini Cooper back there.



by:

Came quickly and is very high quality. Great directions/video from road master makes the installation step by step easy to follow.
Skill level is probably at the intermediate level depending on experience.



by:

The #118-3 is a perfect fit on my 1995 Geo Tracker. When you pull off the removable arms you would never know they are there. The Quality is very good easy to put on all you have to do is drill 4 holes the tube on the base plate fits into the tube on the frame of the tracker and with the 2 bolts it is a solid fit. I was worried about the plate nut getting it inside of the frame but it went in easy when you put it over the frame tube and use a thin piece of metal to slide it in place. I’m very happy with it. I probably could of got it on without taking my bumper off but with only 4 bolts holding my bumper on it made it easier



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The step by step video was very helpful. Have ordered many times from here with no problems



by:

The brackets were top quality and fit perfectly. The directions were excellent with a few small variations for my vehicle.



by:

Great product. Installation went well on my 2018 Lincoln MKX.



by:

Thanks for the video instructions for installation. So helpful — encouraged us to get an installer!!!



by:

I just received the base plate kit and everything appears to be in the box. My RV guy will install it mid Nov. We have had Roadmaster tow bars and plates for over 17 years with no problems. Dealing with etrailer.com has been a great experience. Thanks



by:

Molly did a great job.base plate, trailer hitch, wiring kits, etc.,all arrived in perfect shape,in only a couple days.all parts are correct,I have a garage lined all these idems next week.



by:

The base plate is easy to use and looks great on our MKX. The installation videos are very detailed and precise.



by:

This base plate was supported to be compatible with the adaptive cruise control on my 2018 Lincoln MKX. It was not. After installation the cruise control stopped working. Lincoln charged me $600 to move the sensor so the base plate would not interfere with its operation. So be warned.



by:

I would recommend you too all my friends and family.


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See what our Experts say about this Roadmaster Tow Bar Base Plate

  • Parts Needed to Flat Tow 2018 Lincoln MKX
    The owners manual for a vehicle is the final authority on whether it can be flat towed. If it does not make any mention of the steering wheel lock you'd most likely be able to assume that it's fine and you'd not need to worry about it. You can test this by turning the wheel of the vehicle. If it's not locked you're fine as-is. If it is locked you may have to put the ignition in ACC mode which on a push to start vehicle requires pressing the start button without your foot on the brake. For...
    view full answer...
  • Base Plate Kits that Fits 2016 Lincoln MKX
    The great thing about the Roadmaster base plate kit part # RM-524447-4 is that it fits all versions of the ecoboost, non-ecoboost, as well as the adaptive and non-adaptive cruise control models so either way it works for your 2016 Lincoln MKX. In addition to the base plates, you will also need a compatible tow bar, safety cables, lighting, and supplemental braking to flat tow your vehicle. The most popular compatible tow bar is the Falcon All Terain, # RM-522. This has non-binding arms...
    view full answer...
  • Parts Needed to Flat Tow 2016 Lincoln MKX EcoBoost, Adaptive Cruise Behind RV with Aladdin Tow Bar
    For your 2016 Lincoln MKX with EcoBoost motor and adaptive cruise control you can use Roadmaster base plates # RM-524447-4. In order to use these base plates with your Blue Ox tow bar you will need adapter # BX88178. If you do not already have safety cables I recommend # RM-643. the coiled design helps keep the cables off of the ground. For lighting you can use diode kit # RM-15267 or if you will not be towing the vehicle often I recommend a magnetic kit # RM-2120. You may also need...
    view full answer...
  • Will Blue Ox Patriot Supplemental Braking System Work on 2016 Lincoln MKX
    Yes, the Blue Ox Patriot Supplemental Braking System BLU37TR will work on your 2016 Lincoln MKX. In addition to a supplemental braking system, there are a few more parts you will need in order to flat tow your 2016 Lincoln MKX. - Base Plate Kit: Roadmaster Crossbar-Style Base Plate Kit # RM-524447-4: These will give your MKX a clean look when the tabs are not installed, as you can see by the accompanying photo, which is a cut out of the linked install video of these base plates on a 2016...
    view full answer...
    Image 1 for
  • Base Plates And Wiring Needed to Flat Tow 2017 Lincoln MKX Behind Motorhome
    For your 2017 MKX EcoBoost, I'd recommend the Roadmaster # RM-524447-4 EZ4 base plate, which is compatible with the Stowmaster Tow Bar like # RM-504. If you don't already have them, I'd recommend the # RM-643 safety chains. To wire up the taillight circuits, I'd recommend # RM-15267. You'll also need a supplemental braking system if you don't already have one. A portable system like the Blue Ox Patriot # BLU37TR won't require expensive labor to install and can be moved between vehicles...
    view full answer...
  • Do the Removable Arms from Base Plate Kit RM-521448-5 Fit on Base Plate Kit RM-524447-4
    The flat plate is for a cross bar bracket. The cross bar comes with brackets that mount to the plates on the removable arms. This crossbar comes with the tow bar. The removable arms from the Roadmaster Direct-Connect Base Plate Kit RM-521448-5 will not fit the Roadmaster Crossbar-Style Base Plate Kit RM-524447-4 If you are still wanting to use the same tow bar then I recommend: Replacement Crossbar for Roadmaster Motorhome Mounted Tow Bars Item # RM-067 Roadmaster Tow Bar Quick Disconnects...
    view full answer...
  • Base Plate and Flat Towing Equipment Recommendation for 2016 Lincoln MKX
    Actually, in our fit guide we list the # 524447-4 base plates as being a fit for the 2016 Lincoln MKX regardless of whether it has the EcoBoost engine or the Adaptive Cruise Control with no mention of the air shutters. The base plate is indeed a fit for vehicles with the Active Air Shutters, and I'll have that information clarified. According to my research, your 2016 Lincoln MKX is capable of being flat towed, but exceeding 65 mph is not recommended. There are very specific flat towing...
    view full answer...
  • Estimated Installation Time for Roadmaster EZ4 Base Plate RM-524447-4 on the 2018 Lincoln MKX
    Installation time for the Roadmaster EZ4 Base Plate # RM-524447-4 on the 2018 Lincoln MKX will be approximately 4 hours for an experienced installer and naturally longer for a first-time installer. This kit is recommended by Roadmaster for professional installation but I linked a video and the written instructions to help you see the whole process so you can determine for yourself a realistic install time. Installation time for the wiring options for the MKX will vary depending on the...
    view full answer...
  • Tow Bar that is Compatible with Roadmaster Crossbar Base Plate Kit
    Hey Robert, I attached a link on this page to see all of the tow bars we carry that are compatible with the crossbar style Roadmaster base plate kit you have but I really like the Roadmaster Falcon 2 part # RM-520 due to how easy it is to use.
    view full answer...
  • Does Item # RM-524447-4For A 2017 Lincoln MKX Require An External Crossbar
    Yes, you are correct. Item # RM-524447-4 does require an external crossbar on your 2017 Lincoln MKX, which comes with certain compatible tow bars like Item # RM-522. The crossbar in some ways can be easier to use because you pull a clip from each side and the crossbar stays connected to the tow bar. When disconnecting from the vehicle, you just lift the crossbar off the brackets and fold the tow bar and crossbar up and store it as one unit on the back of the motor home. The tow bar can...
    view full answer...
  • Recommended Tow Defender Screen for 2016 Lincoln MKX Towed by Falcon All-Terrain Tow Bar RM-522
    For a 2016 Lincoln MKX (non-EcoBoost - with Adaptive Cruise Control) fitted with the Roadmaster EZ4 Base Plates # RM-524447-4 and the Falcon All-Terrain Tow Bar # RM-522, you can use Tow Defender # RM-4700. I confirmed with my contact at Roadmaster that this is the appropriate Tow Defender for use with the above base plates and all-terrain tow bar.
    view full answer...

Do you have a question about this Tow Bar Base Plate?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Kathleen M
Video by:
Kathleen M
Employee Laura H
Written by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Isabelle B
Updated by:
Isabelle B
Employee Robert C
Test Fit:
Robert C

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