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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
2022 Ram 2500
etrailer Installation
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Roadmaster

Roadmaster Direct-Connect Base Plate Kit - Removable Arms

Part Number: RM-521884-5
In Stock
$575.00
Retail:$632.50
You Save: $57.50
Tow Bar Base Plate
Not Confirmed to Fit

2022 Ram 2500

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Designed for use with motor-home-mounted tow bars, the direct-connect brackets are virtually invisible, easy to mount and remove, and they eliminate the need for a quick-disconnect crossbar on your tow bar. Installs on your vehicle's frame. Great Prices for the best tow bar base plate from Roadmaster. Roadmaster Direct-Connect Base Plate Kit - Removable Arms part number RM-521884-5 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Roadmaster Tow Bar Base Plate - RM-521884-5

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • Ready for Flat Towing: Creates solid connection points for safely towing behind your RV.
  • Blends In When Not Towing: Hidden brackets sit back in the grille for a clean, factory look.
  • Quick Hookup and Release: Twist-lock arms click into place and remove easily with pull rings.
  • Built to Last: Computer-cut, all-steel frame with black powder coat resists corrosion and wear.
  • Simple Setup: Installs to the frame with included hardware—no welding required.
Made in USA

Features to know about

Built for a Clean Front End: Hidden Mounts with Removable Arms

When you’re not towing, this setup keeps your vehicle’s front end looking stock. The streamlined design eliminates the bulky quick-disconnect crossbar and tucks the brackets back into the grille area, so they stay out of sight and protected from scrapes. Once the drawbars are removed, the remaining brackets are practically invisible, keeping everything clean and low-profile.

Hook Up Fast and Simple: Twist-Lock Direct-Connect Arms

Each drawbar slides into the bracket, twists to lock in place, and releases with an easy pull of the built-in ring. There’s no extra hardware or adapters to fumble with, so connecting your tow bar at camp or on the road takes just a few seconds. The design works directly with Roadmaster motor-home-mounted tow bars like the Nighthawk, Sterling, Blackhawk, Blackhawk 2, Falcon, and Falcon 2—no quick-disconnect crossbar required.

Strong Where It Counts: All-Steel Construction for Lasting Confidence

This base plate kit mounts directly to your vehicle’s frame using computer-cut, all-steel components that deliver exceptional strength. The black powder coat finish resists corrosion and helps the setup handle thousands of miles of towing without worry. It spreads towing forces evenly through the chassis and doesn’t require any welding during installation.

DIY Ready: Straightforward Bolt-On Install with Included Hardware

For anyone handy with tools, this setup installs with basic equipment and clear instructions. The kit includes all mounting hardware needed for a secure bolt-on fit—no welding required. Once installed, you’ll have solid connection points ready for your motor-home-mounted tow bar every time you head out on the road.

Specs

Features

  • Direct-connect brackets: Provide attachment points for your motor-home-mounted tow bar
  • Streamlined design: Creates supremely clean look
  • No obtrusive quick-disconnect crossbar:
  • Hidden brackets: Sit even farther back than standard brackets
  • 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
  • Compatibility: Compatible with Roadmaster motor-home-mounted tow bars only
  • Included items: Instructions and mounting hardware included
  • Origin: Made in the USA
  • Warranty: Limited Lifetime Warranty

Note

Roadmaster direct-connect base plates will only work with Roadmaster tow bars that slide into a trailer hitch, such as the Nighthawk, Sterling, Blackhawk, Blackhawk 2, Falcon, or Falcon 2. These base plates will not work with tow bars that require a hitch ball.

521884-5 Road Master EZ-5 Base Plate Kit

Installation Details RM-521884-5 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.8

3635 reviews
5 Stars
(3171)
4 Stars
(311)
3 Stars
(64)
2 Stars
(30)
1 Star
(59)
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Designed for use with motor-home-mounted tow bars, the direct-connect brackets are virtually invisible, easy to mount and remove, and they eliminate the need for a quick-disconnect crossbar on your tow bar. Installs on your vehicle's frame.

by:

A clean look on my 2025 Ford Maverick Hybrid after following e-trailer's detailed installation instructions.



by:

Installation was fairly straightforward, kudos to e-trailer for the videos, looks great, everyone says it looks factory installed, love the low profile base plate without the bar, also love that the hook ups are detachable and can be removed when not towing, gives it an overall cleaner look. Installed it right at the campground without issues, took about 3 hours to install, with our rubicon only had to widen the top holes as the second set of holes were already the size of the bolts needed. This is the 3rd base blare we have installed and they get easier each time.



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Put this on a 2014 Honda CR-V. This is a very well made base plate setup! The overall design, welds and powder coating are outstanding! Shipping was super fast too! The install video by etrailer was close to perfect and really helped to take the "scary" out of doing the job. The only change I would like to see in the video is during the grill removal. He says to just yank it forward to get the clips to release. Unfortunately, most of the specialized clips broke doing it this way. Had I known, I would have slipped a thin tool just below the grill to get the clips to unlock/release. Also, on the wrap around, bumper cover, some of the tabs on the bumper cover ripped out and I had to do some creative plastic welding or fiberglass resin/cloth to repair. These clips have a release tab also. I suggest finding specific videos on youtube to remove the plastic body parts and grill. I got it all done and it works perfectly! I really love the almost invisible tow receivers on the car (when the arms are removed). Our last toad was a 1997 Nissan Hardbody pickup that has permanent knee busting/shin smashing protrusions. I am super happy with everything we have bought from etrailer over the past 18 years!



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The folks at etrailer are fantastic. I didn't know everything I needed to tow my car behind our RV... but they did! Everything I needed was in the boxes and the videos made it all come together. Thank you to everyone at etrailer!



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It mounted up just as the instructions said it would. From previous research I was not surprised when some of the mounting did not align perfectly. Had to use a dremel tool to make it work. The product looks very sturdy from its design. I’m happy with it and look forward to RV traveling.



by:

Good product. If you are reasonably handy and have some tools, you can install this yourself in a few hours. I'm a mechanic, it took me a little over 2 hours to install on my own toad. The fit is good, there are 4 holes you have to drill, otherwise it is plug and play. When you insert and twist lock the tow bar mounts into their sockets they feel a little sloppy but they are secure, and i never noticed any rattle when towing. Overall i give it a 4 out of 5 for easy install and clean look after install. Pic included of installed base plate.



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This was a bit of a challenge to install on a 2026 Chevrolet Colorado Z71. One item to be aware of, as you take off the front Facia of the truck for the install, there are two Facia "brakets" that attach to the front fenders that seem like they are use once plastic snaps. Three of the 4 snaps broke off on both sides when I removed the facia. These are about $35 a piece from Chevy and prevent you from making this a 1 day job. Additionally, there are 2 7mm screws/bolts that connect one of the coolers to the back of the bumper support and these are a real problem to get back in - over an hour of time and every 1/4" tool in my arsenal was needed to find a way to get these started. Finally, one of the Connecting Plates (Passenger side) needed to holes to be elongated to enable all the bolts to be started. Finally - you need to put the Brakaway bracket on the driver side, to have enough cable to reach you brake system. Probably have 4 hours in the disassembly and installation of the Direct-Connect Plate. Now waiting a couple days for the plastic brackets from Chevy to complete the install. Good Luck!!



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Excellent base plate, just as my wife requested, she didn’t want too much metal visible in front of the bumper. Installation instructions were a bit confusing for me, but I’ll clarify, for me.



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Very fast shipping, and the install was easy. Great product



by:

2002 Honda CR-V. Easy to install. Two and a half hours, and stopped to eat a sandwich. To install the spacers inside the roll frame on the car I used an extension magnet to reach in there and position them. As you can see NO cutting was needed on the bumper cover!
Now I have to figure out the easiest way to run the wiring for the lights.
Thanks Lauren A for your help!



by:

Awesome instructions! Install was fairly easy. Product is very high quality and solid construction. Thank you E Trailer!



by:

I installed this base plate on a 2018 Miata RF. I think I recall something about it taking 3.5 hours and my initial estimate was 3.5 days. It actually took a bit longer than that, but I was not pushing myself and did not have the luxury of having the vehicle on a lift but had it up on two ramps for the front wheels.

The order came pretty quickly, probably about 4 or 5 days between the time I placed it and UPS delivered it. The parts were well packaged and it came with a printed set of instructions. I had watched the video install on another Miata and if it weren't for that I'm not sure I would have tried it. I'm not a pro mechanic by any means but have worked on my own vehicles now for over 40 years. And I'm not a spring chicken either, so all the up and down working on the car can tire me fairly quickly. But if you are not in a rush and go carefully it can be done.

It took a day to do most of the disassembly. I removed both headlights and the intake tube on the passenger side. That tube came out much easier then it went back in.

The next day I got the baseplate mounted which helped to start visualizing how it all would work. All of the holes for the 6mm bolts did not quite line up with the holes in the frame. I had to file one sides worth for a bit of extra clearance. From my experience on this install you really want to leave all the bolt on the loose side till you get everything situated.

A couple of days off for rain and the then I got to work on the bracing. Initially I though I didnt need to cut the top lip of the frame but I decided to go ahead and do it anyway since that part didnt seem to sit flat when bolted from the back end. I'm still not sure its really necessary as the hump clears the metal lip without cutting it.

I also ordered a 14" long 1/2" drill bit to cut the holes in the frame. It was a Bosch bit, wasnt very expensive and it went through the metal like the proverbial hot knife. I managed to get all the big bolts installed in a day with a great sense of satisfaction.

The next day I torqued down all the bolts and the mount felt very solid. They stress that you need to install all the bolts, but honestly I can't see the 6mm bolts doing much compared to the half inch bolts that do most or all of the work. But I put them in and tightened them all the same.

A couple of days spent to install the tail light wiring and then I got back on to putting the front clip back on. My car must have had an aftermarket grill since it did not match the pictures or the video. I tried to position it carefully to see where the parts that were going to stick out would be so I didnt cut out more than I needed to. So there was a good amount of back and forth, cut and fit. In the end I had to make some extra cuts for clearance for the safety cable tabs as well as the mount for the 6 wire connector. Until I made the extra cuts the lower part of the front clip would not seat correctly. Getting the clip in the right position so it fits under the lights also takes some finagling.

Figuring out where all the bolts go back in can be interesting. Take pictures where you can. Dont be too aggressive when working with plastic parts. Overall I'm satisfied with the install, but I have yet to try and hook it up to tow.



by:

Easy to install needed to replace some fasteners as they broke removing front grill was able to get them from Amazon cheap



by:

Easy installation! Etrailer videos are very informative and helpful! Always great to have a helper too!



by:

This Road Master Direct connect base plate works perfectly for a 2020 ford transit cargo 250! Awesome service from etrailer as usual! The finished product can barely be seen through the front fascia!



by:

It was shipped promply. I installed it myself using the included step by step instructions and videos from etrailer. It all went well (though I had to come back and reconnect the sensor plug- my bad).
I tow a Jeep Grand Cherokee Trailhawk and this base plate is nearly invisible when not towing. Works well.



by:

I bought and installed this tow plate one year ago on my 2013 Jeep Wrangler. I bought this particular plate due to the jeep having a Barricade off-road bumper. This plate attaches a bit lower than other plates and prevented having to modify the bumper. Installation was easy involving only hand tools. The plate comes with all needed bolts and attachments. I have towed this Jeep several thousand miles behind my RV with absolutely no issues. As an aside, I use a Roadmaster Night Hawk tow bar which is also an excellent product. Both are expensive, but I believe cheaping-out on safety is no a good idea. I highly recommend this product.



by:

This works perfect with my Roadmaster tow bar. It was a little difficult to install since I had to remove the front end of the Trailblazer, but with the good directions that came with it and some you tube videos made the installation easier.



by:

Had these installed at Lester’s Automotive in Boerne,Texas…First class service all the way. Paul and his crew worked through lunch for over 4 hours to install these on our 2026 Ford Ranger. Also ran the wire and hooked up my auxiliary tow lights. The price for this was very reasonable and would highly recommend them for all r.v. needs even if not real close to the Boerne area. R.V park within reasonable distance if needed.



by:

Etrailer comes through again! This was a great savings as a used kit, but it was even better than the description online. I have installed (4) baseplates on and etrailer.com has given me great videos to watch and good instructions to follow. Couldn't be more pleased with the quality, service and delivery times.



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One year later we've towed our 2021 MINI Cooper about 10k miles with this baseplate and have had no problems. The install was complex but not as difficult as I expected. Took me about 5 days, working 2-4 hours per day to install. Hookup is straightforward and doesn't take much time. Very satisfied with this baseplate and with etrailer's installation instructions.



by:

Good service. Had to return due to date of manufacture of our vehicle being prior year. Had to order a different base plate. Return was very easy



by:

Regards base plate installation 2021 mini cooper
I like to thank you for all your help, everyone at etrailer was very helpful. The quality of the part are excellent and the instructions are right on. One important task before starting is to check all the hardware included in the Kit, on mine was one 1 “ pipe spicer missing which I only noticed during the installation and lost some time with this. One other suggestion in regards to the horn installation mounting it directly to the support bracket will bend the connection clip. I made a little bracket to create more space. Everything else went very smooth. Great product and service.


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

  • Flat Towing 2015 Mini Cooper Behind Motorhome
    We do have all of the parts you'll need to flat tow your 2015 Mini Cooper behind your RV as long as it's a manual transmission vehicle. If it's an automatic you'd have to use a tow dolly like the Roadmaster part # RM-2050-1 since the vehicle can't be towed with all 4 wheels on the ground. The dolly can be used on either vehicle configuration though and does have a bit easier of an install since it's one thing to assemble and not several things that need to be installed on the vehicle. For...
    view full answer...
  • How do I Unlock My Steering Column on Mini Cooper to Flat Tow? What Parts do I Need to Flat Tow?
    Hello JC, Here is the information that I found on how to unlock your steering wheel to flat tow your 2018 Mini Cooper: To flat tow your 2018 Mini Cooper with a manual transmission, unlocking the steering wheel is super easy. Just pop the key into the ignition and turn it to the accessory position—this is usually the first click, where the radio comes on but the engine stays off. If your Mini uses a push-button start, just press the Start/Stop button once without touching the clutch or...
    view full answer...
  • How To Use Demco Tow Bar with Roadmaster Base Plate Kit
    I looked up to see what base plates you have on your 2017 Mini Cooper. You have the Roadmaster Direct-Connect Base Plate Kit, # RM-521884-5. To use your Demco Commander II Non-Binding Tow Bar, # DM9511012-BX all you need to do is swap out the removable arms on your base plates with the Universal Tow Bar Adapter for Roadmaster Direct-Connect Baseplates, # RM62ZR. Swapping out the arms with these will actually allow you to use a Blue Ox, or Curt tow bar as well.
    view full answer...
  • Parts Needed to Flat Tow a 2015 Mini Cooper Behind an RV
    I will be happy to help you get the parts needed to flat tow your 2015 Mini Cooper behind your motor home. The first thing you will need is base plates. For your 2015 Mini Cooper use # RM-521884-5 if it's a Base model or # RM-521882-5 if it's an S model. I have linked the install details for both of them. Next you will need a compatible tow bar. The tow bar I recommend the most is the Sterling, # RM-576. This tow bar does include another item you will need, safety cables. I have linked...
    view full answer...
  • Complete Flat Towing Set Up for a 2021 Mini Cooper 4 Door
    I would be happy to help you set your 2021 Mini Cooper 4 door up for flat towing. To start out with you're going to need a base plate kit. You will want the Roadmaster Direct-Connect Base Plate Kit - Removable Arms item # RM-521884-5. This fits the convertible and hardtop - S models and the base model. The hidden bracket design provides improved aesthetics compared with standard brackets. I have attached a picture below of what this base plate kit will look like with the arms removed. Next...
    view full answer...
    Image 1 for
  • How to Connect an Older Roadmaster Falcon 2 Tow Bar to Direct Connect Base Plates
    I've got good news for you. All you'll need to do is remove the crossbar from your Falcon 2, RM-520, no adapter necessary. The towbar arms will then attach directly to the removable arms of the # RM-521884-5 base plate. Couldn't be simpler. You can see this at the 1:10 mark of the video I've linked for you. The video shows a direct connect base plate in use on a different vehicle, but it will show you how things fit together. In addition to the base plate and tow bars, you'll need safety...
    view full answer...
    Image 1 for
  • Is Wiring Converter Needed for Flat Towing 2015 Mini Cooper
    That's a good question but a wiring converter is not needed to install the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 on your 2015 Mini Cooper. Since it has separate lighting and your motorhome has combined lighting you can add Tail Light Converter # 118158 if you want to retain your Mini's separate turn and brake signals but it isn't a requirement. In regards to the airline you will run the vacuum line of the SMI Stay-IN-Play DUO Supplemental Braking System #...
    view full answer...
    Image 1 for
  • Roadmaster Base Plate that Fits 2019 Mini Cooper Non-S Hardtop
    We do have a Roadmaster base plate kit that fits your 2019 Mini Cooper hardtop non-S model with the part # RM-521884-5. Sometimes depending on how difficult a product is to get in stock we will take it out of our fitguide.
    view full answer...
  • Compatible Flat Towing Equipment For A 2021 Mini Cooper 2dr Hardtop Base Model
    We most likely haven't had the opportunity to test fit the Roadmaster Direct-Connect Base Plate Kit # RM-521884-5 on a 2021 Mini Cooper 2dr hardtop base model yet which is why it isn't in our fitguide. Since Roadmaster is endorsing this as a fit for your vehicle then we will have it added to our site. Direct-Connect base plates like this make hooking and unhooking your tow bar super easy. The direct-connect arms are also removable, which will provide a clean look and prevent them from being...
    view full answer...
  • Roadmaster EZ5 Baseplate Compatibility with Falcon 2 Tow Bar
    The Roadmaster EZ5 Base Plate Kit - Removable Arms # RM-521884-5 for your 2015 Mini Cooper are absolutely compatible with your Falcon 2 Tow Bar # RM-520. You will simply remove the quick connection crossbar used for other baseplates and directly connect the tow bar to each side individually. I do recommend using Loctite Threadlocker # LT37420 for your base plate installation. If you have other questions or need other components for your flat towing system let me know and I'd be happy...
    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 Lindsey S
Edited by:
Lindsey S
Employee Shelly K
Updated by:
Shelly K
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Isabelle B
Updated by:
Isabelle B
Employee Amanda K
Updated by:
Amanda K
Employee Amanda M
Written by:
Amanda M

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