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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
1997 Mercury Villager
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Roadmaster

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Part Number: 521879-1A
In Stock
$575.00
Retail:$632.50
You Save: $57.50
Tow Bar Base Plate
Not Confirmed to Fit

1997 Mercury Villager

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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 521879-1A 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 - 521879-1A

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • Ready for Flat Towing: Mounts to the frame to create secure connection points for a tow bar.
  • Blends In When Not Towing: Hidden bracket design leaves only small, barely visible mounts.
  • Quick Hookup and Removal: Twist-lock drawbars insert or release without pins or clips.
  • Built to Last: Computer-cut, all-steel construction with black powder coat resists corrosion.
  • Easy Setup: Bolts on with included hardware—no welding required for installation.
Made in USA

Features to know about

Made for a Clean Front End: Virtually Invisible Bracket Design

If you like a clean look when you’re not towing, this base plate fits the bill. The hidden bracket design keeps everything tucked behind the grille, so there’s nothing bulky sticking out from the front end. Once the drawbars are removed, the remaining brackets are almost invisible and protected from scrapes or scuffs.

Quick Hookups Every Time: Twist-Lock, Removable Drawbars

Roadmaster’s twist-lock arms make connecting and disconnecting simple. Just insert the arms into the brackets, twist to lock, and you’re ready to tow—no pins or clips required. When it’s time to unhook, twist them back and pull them out. The design helps make setup fast even when you’re working solo.

Built Strong for the Long Haul: All-Steel Construction with Powder Coat Finish

The brackets are made from computer-cut, all-steel construction for exceptional strength and durability. A black powder coat finish resists corrosion and keeps the surface looking good over time. It’s a solid setup that’s designed to handle thousands of miles of towing without compromise.

Straightforward Install: No Welding Required

This kit bolts directly to your vehicle’s frame with no welding needed. Each base plate is custom designed for a precise fit, making alignment easier and installation cleaner. The kit comes with detailed instructions and all necessary mounting hardware, so it’s ready to go right out of the box.

Works Seamlessly with Roadmaster Tow Bars: Crossbar-Style Compatibility

The base plate is compatible with Roadmaster tow bars when used with the quick-disconnect crossbar (910021-00, sold separately). It’s designed for a secure connection that integrates easily with other components in your flat towing setup, giving you a reliable link between vehicle and RV every time you hit the road.

Specs

Construction and Design

  • Bracket design: Hidden bracket design provides improved aesthetics compared with standard brackets
  • Drawbars: Easily removable - just twist and pull
  • Attachment method: Twist Lock Attachment (no pins or clips required)
  • Construction material: Computer-cut, all-steel construction provides exceptional strength
  • Finish: Black powder coat finish is durable and corrosion resistant
  • Visibility: Partially Hidden when installed

Installation

  • Installation type: Simple installation - no welding required
  • Mounting location: Brackets install on your vehicle's frame to provide attachment points for your tow bar
  • Fitment: Custom base plates ensure a perfect fit for your vehicle
  • Compatibility: Compatible with Roadmaster tow bars with use of quick-disconnect crossbar (910021-00 - sold separately)
  • Included items: Instructions and mounting hardware included
  • Country of origin: Made in the USA
  • Warranty: Limited Lifetime Warranty

521879-1A Road Master EZ 2 Base Plate Kit

Installation Details 521879-1A Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

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:

The Jeep project went very well everything fit great and worked well. I really love Roadmaster products and quality and your company is the best place to purchase them. I sold the Jeep and replaced it with a new 2019 Chevy Equinox 2.0 L AWD and just purchased and installed the following items from you and installed them, RM-156-25 & RM-156-75 Battery Charge Line Kit, RM-146-7 Flex Coil Kit, RM-523193-4 EZ4 Plate Kit, RM-88333 Custom Seat Adapter, RM-751489 Stop Light Switch Kit and a RM-98160 Second Vehicle Brake Kit w/brakeaway. All these parts were in stock and arrived quickly and normal with you people, I really enjoy the o-line vidios as I do all my own installs. Thank you so much for your great service.
I will attach pictures of my install, you will see how I was able to fab a bracket and attach it to the existing mount on the base plate to mount the brakeaway switch and the air connection for the brake system.
I also fabricated a tail light bar as I didn't want to use mag-lights or splice into the factory lights and bulbs installed into the lights would not work as the factory brake lights will come on when the brake system is applyed and the turn siginals would not be visable.
Thanks for all you do, I would and do recommend you people to everyone who needs your products. Rob



by:

Fast shipping



by:

The installation took me about 7 hours, the facia removal was tedious , between the installation videos and instructions, I performed the task. This bar has one con, the pull rings on the removal bars are flimsy , my first pull stretched one out. I’m sure trailer has a fix for this under warranty, I hope.



by:

The representative (Sarah) was very helpful and knowledgeable, the prices are very reasonable and all my items arrived on time. When I called with a question, she was very polite, friendly and genuinely sounded like she enjoyed her job. When I discovered one of the items I ordered wasn’t needed, getting help to return was hassle free. I would recommend etrailer to anyone that needs anything RV or trailer related. I will definitely do business with them again. I am impressed.



by:

Etrailer was very easy to do business with and made it simple to ship my order directly to the RV shop that was going to install it. This was my first order from them, but I will definitely consider future purchases from them if I'm in need of something for my RV.



by:

We towed our 2004 Subaru Impreza WRX STI 3000 miles last year, this is an ideal setup, discreet when not in use, solid, and easy to get on/off. Very please with the support I received from Roadmaster as one of the bolt was missing, was sent super quickly.



by:

Not an easy install on a Trax but it is very well made and gives a clean look. I did customize by cutting down the 6 pin bracket supports to get it flush with front of the car.



by:

Install pretty easy. You will have to change directions of one bolt due to obstruction ( frame). Cannot torque a few of the bolts. These are the ones with wire attached.
Rock guard needed addition trimming from factory instructions.



by:

Awesome delivery speed, and a well made base plate for my 2007 Element. Installation was a breeze (thanks to my son’s heated shop) and I had to do no cutting to make this fit. I had a Stowmaster tow bar that came with my RV and etrailer was able to steer me to the correct missing parts to make this a really affordable installation. Now to get out of this snow!



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



by:



by:

Still working!



by:

Harry profile picture

Harry

2/28/2025

Everything I bought from etrailer has and works very well. Customer service was outstanding as well for my 2012 Mini Cooper

Kate F. profile picture
Etrailer Expert

Kate F.

2/28/2025

@Harry Harry, I never tire of hearing that our Customer Service is doing a great job! We take a lot of pride of having real people taking care of our Neighbors (customers), such a rare thing these days. Are you going to be flat towing your Mini to a new spot this year? If so, where are you headed? If not, what has been your favorite trip?
Harry profile picture

Harry

3/2/2025

@KateF I pulled the mini 7600 miles without any problems.  Didn’t really know it was back there.  I hope to head to FL soon for a short but needed trip.  Again thank You for your help.  
Kate F. profile picture
Etrailer Expert

Kate F.

3/3/2025

@Harry My pleasure Harry! I would imagine the Mini would be a great car for flat towing seeing how it is so lightweight. Safe travels =)


by:

I installed it on a 2012 mini Cooper S. The video was of a slightly different model than mine, but was very helpful. One thing to note is that the model S has a turbo charger so it has two plastic air intakes in the lower bumper area. That was not mentioned in the instructions or the video. The fit of the towbar bracket was perfect! Very little of it shows from the outside.



by:

Fairly easy to install however it requires removing the front (nose) of the car. I was amazed at how much plastic goes into making these cars. It took about 3-4 hours to take off the front remove the factory 'bumper' that the RoadMaster Base Plate replaces and reinstall everything. I had problems because someone had removed the front of the car previously and had not put it back together properly. It all worked out and I'm loving how easy it is to hookup and unhook. I had a dolly previously and this is so much better. When I sell the Mini I'll restore the front end (replacing the grille) unless the new buyer wants to tow it. The etrailer and Roadmaster teams are great to work with.



by:

Installed on a 2011 Mini Cooper S hatchback turbo. Previous reviews were pretty spot on. Lots of plastic goes into these cars! My install (including brake light wiring), was 7 hours start to finish. Hardest part was removing the bumper facia to get at the metal bumper underneath. Be patient, take your time so you dont break any plastic clips!
The base plate itself is VERY robust compared to the oem bumper! Adds about 20#. I did have to trim away some plastic flashing behind the facia where the air scoops go. Easy to do with a Dremel tool.
When done, it is an extremely clean look!
Very impressed with the fit and finish. Very easy to hook up. Went with Falcon 2 bar. Tows very well!
Thanks etrailer!!


25
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See what our Experts say about this Roadmaster Tow Bar Base Plate

  • Recommended Baseplate for a 2013 Mini Clubman S w/a Manual Transmission
    Hey Larry, thanks for the information! To flat tow your 2013 Mini Clubman S using a Roadmaster Falcon All-Terrain Tow Bar, you'll need the Blue Ox Base Plate Kit item # BX1307 and the Roadmaster Tow Bar Adapter Brackets for Blue Ox Base Plates item # RM-031. The Blue Ox item # BX1307 is custom fit for your Mini. It comes with all hardware necessary to complete the installation. This baseplate comes with removable tabs that make hooking up and disconnecting extremely easy. The baseplate...
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  • Parts Needed To Flat Tow a 2013 Mini Cooper John Cooper Works Edition
    Yes, the parts listed below will also fit your 2013 Mini Cooper John Cooper Works. Roadmaster Crossbar-Style Base Plate Kit part # 521879-1A Roadmaster Falcon 2 Tow Bar part # RM-520 Replacement Quick Disconnect Crossbar Assembly for Roadmaster Tow Bars part # 910021-00 RoadMaster 68" Single Hook, Coiled Safety Cables part # RM-643 Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 Brake Buddy Select 3 Portable Supplemental Braking System part # HM39524 For the...
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  • Base Plate Kit for 2013 Mini Cooper Convertible Towed with Demco Tow Bar
    We don't have any Demco base plate kits that fit your 2013 Mini Cooper convertible, but we do a Roadmaster with the part # 521879-1A but it would only fit if yours is an S model. You'd be able to use your current Demco tow bar with it with the adapter part # RM-033. For a wireless tow bar lighting solution that has two different light assemblies you'd want the Hopkins Tow Lights part # C6304.
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  • Recommended Base Plates for 2012 Mini Cooper Countryman Model S
    The Roadmaster EZ2 Base Plate Kit - Removable Arms # 521879-1A is not a confirmed fit for your 2012 Mini Cooper Countryman S model with manual transmission. It is a fit for 2011-2014 Mini Clubman S models. The only baseplate kit we have compatible with your 2012 Mini Countryman is the Blue Ox Base Plate Kit - Removable Arms # BX1308 which includes the model S. This will be a fit for your vehicle and I've attached the installation details to assist. If you would like recommendations...
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  • Parts Needed to Flat Tow a 2011 Mini Cooper S Convertible Behind an RV with Roadmaster Eagle Tow Bar
    Since you have a 2011 Mini Cooper Convertible S model you can use Roadmaster base plates # 521879-1A. They are compatible with Quick Disconnects (found on some Roadmaster tow bars) and all Roadmaster tow bars. Base plates # 521880-1 do not fit the design of the Convertible S models. In addition to the tow bar you have and the base plates you will also need safety cables (unless you already have some), lighting, and supplemental braking. for safety cables I recommend # RM-643. The coiled...
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  • Parts Needed to Flat Tow a 2012 Mini Clubman S
    There are two base plate kits that are a fit for your 2012 Mini Clubman S. We have the Roadmaster kit part # 521879-1A which only fits Clubmans before the mid-year change and the Blue Ox kit part # BX1307. Both will require about the same amount of time and modifications for install. There will be fascia removal and reinstallation, trimming of bumper, some minor drilling and trimming of air damn. I would go with the Blue Ox kit because it will fit the mid-year changes as well. In addition...
    view full answer...
  • Base Plate Kit Recommendation for a 2014 Mini Cooper Hardtop S
    Yes, Roadmaster makes base plate kits for the Hardtop S models of the 2014 Mini Cooper. For that you would want the base plate kit # 521879-1A. When choosing a tow bar, you will need one that is compatible with EZ base plates. I recommend the Roadmaster Stowmaster Tow Bar, # RM-501. I have included a link to the installation details and a link to a video review for you to view. You will also need safety cables. I recommend Roadmaster Safety Cables, # RM-643. These are coiled so they...
    view full answer...
  • Instruction Detail on the Roadmaster EZ2 Base Plates for a 2014 Mini Cooper
    The Roadmaster EZ2 base Plate Kit, # 521879-1A, are designed exclusively for the 2011-2014 Mini Cooper. The instructions for the base plates will show installation on a Mini that fall in between 2011-2014. The instructions go step-by-step and include pictures for the installer to reference during installation. If you look toward the bottom of this page there is a link for the installation instructions that you can review.
    view full answer...
  • Recommended Tow Bar for 2012 Mini Cooper John Cooper Works
    Yes, there is a base plate kit for a 2012 Mini Cooper John Cooper Works, the Roadmaster Crossbar-Style Base Plate Kit part # 521879-1A which will then pair nicely with the Roadmaster Falcon 2 Tow Bar part # RM-520 and Replacement Quick Disconnect Crossbar Assembly for Roadmaster Tow Bars part # 910021-00. In order to complete your setup you'll need the following: RoadMaster 68" Single Hook, Coiled Safety Cables part # RM-643 Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part...
    view full answer...
  • How to Use a Blue Ox Tow Bar with the Roadmaster EZ2 Base Plate Kit on a 2012 Mini Clubman S
    The correct Roadmaster EZ2 Base Plate Kit for your 2012 Mini Clubman S with a manufacturer date of 05/12 is part # 521879-1A, not part # 521880-1. You can use most Blue OX Tow Bars which are listed for you below with this base plate kit so long as you also purchase the RoadMaster Base Plate to Blue Ox and Demco Tow Bars Adapter part # RM-033 and the Roadmaster Tow Bar Quick Disconnect Kit part # RM-201. Acclaim Adventurer Aladdin Alexxa Allure Alpha Ambassador Aventa Aventa II Aventa LX Kar Bar
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  • Parts Needed to Flat Tow 2011 Mini Cooper S Clubman
    For your 2011 Mini Cooper S Clubman the correct base plate kit you'd need is the part # 521879-1A which is a confirmed fit and would provide you with the attachment point you'd need for a tow bar. 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 2, # RM-520. For safety cables you can use # RM-643. The coiled design helps keep the cables off...
    view full answer...
  • Replacement Arms for Roadmaster 521879-1A Base Plate Kit for 2011 Mini Cooper
    You're looking for C002214 and C002215 which are the replacement arms for the driver and passenger side of base plate kit # 521879-1A. We don't sell them through the website, but we can obtain them. You'll want to call our Customer Service folks at 800-298-8924 and they'll get you fixed up. Please note, in order to manufacture the replacement arms, Roadmaster would need to do a separate manufacturing run for just those parts, which is an expensive proposition. Sometimes the arms cost...
    view full answer...
  • Recommended Base Plates and Flat Towing Equipment for 2013 Mini Cooper S Convertible
    As long as your Mini Cooper S convertible doesn't have the aerodynamic package, sport suspension or the John Cooper Works, the Roadmaster # 521879-1A would be the correct base plate. The Falcon 2 tow bar, part # RM-520 would indeed be compatible with the # 521879-1A. To finish your flat towing set-up, you'll need some other items, like safety cables, a wiring solution, a supplemental braking system and possibly a high/low adapter to keep the tow bar within 3 inches +/- of level. For a...
    view full answer...


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Isabelle B
Updated by:
Isabelle B

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