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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
2017 Mercedes-Benz SLC
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Roadmaster

Roadmaster Direct-Connect Base Plate Kit - Removable Arms

$575.00
Retail:$632.50
You Save: $57.50
Tow Bar Base Plate
Not Confirmed to Fit

2017 Mercedes-Benz SLC

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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-521569-5 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

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • Ready for Flat Towing: Creates secure attachment points so you can safely tow your vehicle behind your motorhome.
  • Blends In When Not Towing: Hidden brackets sit back in the grille for a clean, factory-style look.
  • Quick Hookup and Release: Twist-lock arms click into place and remove fast with built-in pull rings.
  • Built to Last: Computer-cut, all-steel construction with black powder coat resists rust and wear.
  • Simple Install: Bolts to the frame with included hardware—no welding required for setup.
Made in USA

Features to know about

Made for a Clean Front End: Streamlined, Hidden Mounting

This setup keeps the front of your vehicle looking clean when you’re not towing. The direct-connect brackets are partially hidden and sit farther back than standard ones, so nothing bulky sticks out. Once the removable drawbars are off, the brackets are virtually invisible and stay protected inside the grille from scrapes or scuffs. It’s a simple way to maintain a factory look without giving up function.

Hook Up Fast and Go: Twist-Lock, Removable Arms

Getting ready to tow is quick with the twist-lock connection system. Each arm clicks and locks into place when inserted into the bracket, and built-in pull rings let you release and remove them in seconds when you’re done. There’s no need for a separate quick-disconnect crossbar—just connect your Roadmaster motor-home-mounted tow bar directly and you’re ready to roll.

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

The base plate mounts directly to the vehicle’s frame with no welding required. Its computer-cut, all-steel construction gives it exceptional strength for towing while maintaining precise alignment. A black powder coat finish adds durability and corrosion resistance for long-term use through any weather or road conditions.

Built for a Perfect Match: Custom Fit with Roadmaster Tow Bars

These base plates are made specifically to line up perfectly with your vehicle’s frame and are compatible only with Roadmaster motor-home-mounted tow bars like the Nighthawk, Sterling, Blackhawk, Blackhawk 2, Falcon, or Falcon 2. Hardware and instructions come in the box so you can bolt everything up securely and hit the road with confidence.

Specs

Features

  • Designed for use with: motor-home-mounted tow bars
  • Direct-connect brackets: provide attachment points for your motor-home-mounted tow bar
  • Streamlined design: creates supremely clean look
  • No obtrusive quick-disconnect crossbar: eliminates bulky components for a clean front end
  • 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 components: Instructions and mounting hardware included
  • Manufacturing origin: Made in the USA
  • Warranty: Limited Lifetime Warranty

Note

  • 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.

521569-5 Road Master EZ-5 Base Plate Kit

Replaces Roadmaster 521569-4

Item # RM-521569-5

Installation Details RM-521569-5 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)
Review sort icon
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:

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!



by:

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.



by:

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!!



by:

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.



by:

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.



by:



by:

Pleased with the Direct-connect Base plate kit quality and prompt shupping.



by:

Fast shipping, perfect fit and performance. The price was great too!



by:

1 year full time I honda fit no problems

Bear profile picture

Bear

2/22/2023

Cali to Alaska, Florida, Vermont. Summer in Idaho. Full timer. Not 1 issue yet.



by:

Very good product. The install instructions were Fantastic.
Installation was hampered due to the fact that the Base Plate would not fit around the car frame. It was 3/8" too narrow. After a minor adjustment, the rest of the install was fine. The install of the 4 front bolts was minorly problematic due to the holes not lining up with the double weld nut backing plate.
I would buy this product again.



by:

Installation could/should have been great but...
Instructions that came with kit were great.
The problem was the base plate. When I got ready to lift it into place I checked the alignment of the 2 uprights and found they were not parallel and the unit would not fit around the outside of the frame.
Had to do some creative engineering and was able to bend the outside plates so they finally slipped up the outside frame but there was still a lot of friction so getting everything aligned and in place so that the holes could drilled correctly was a major hassle.



by:

It fit in the fit....



by:

I just installed, on my 2015 Honda Fit LX, took me some time with the drilling part, but overall i got it done in about a couple hours plus going to home depot to get a better drill bit. I used dremmel to trim the plastic grill. I didnt see it on the instructions, but i zoomed in the photo to count the areas that needed to be cut.


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

  • Can 2015 Honda Fit With Manual Transmission be Flat Towed Behind Motorhome
    I took a look at the owner's manual for a 2015 Honda Fit and it states that if the vehicle has a manual transmission it CAN be flat towed; if it has an automatic transmission it cannot be flat towed behind a motorhome. There are a number of parts you're going to need in order to flat tow a '15 Fit with a manual transmission, starting with compatible base plates. I recommend the Roadmaster EZ5 Base Plate Kit # RM-521569-5 because the brackets will be hidden away so the Fit can maintain...
    view full answer...
  • Availability of Replacement Arms for Roadmaster Base Plate Kit
    We do have replacement arms available for your Roadmaster EZ5 Base Plate Kit # RM-521569-5 with part # RM-ARMS. When the original base plate brackets and arms are manufactured, they are made as one single part. So to be sure that the replacement arms fit perfectly, Roadmaster just needs a bit more information regarding your original base plate brackets. Prior to ordering, you will just click on the Installation Details at the bottom of the product page and fill out the bracket order form....
    view full answer...
  • Can I Flat Tow a 2015 Honda Fit EX with Manual Transmission Behind A Motorhome
    Yes, you can flat tow your 2015 Honda Fit EX with manual transmission behind a motorhome. There is slight differences between the Roadmaster EZ4 # RM-521569-4 and EZ5 # RM-521569-5. The main difference is the EZ4 is more universal and will have more fit options. Both will feature Twistlock series brackets that are virtually invisible. Since you will be flat towing your 2015 Honda Fit EX manual transmission, you will need the following items: a tow bar, safety cables, wiring and a supplemental...
    view full answer...
  • Replacement Arms for Roadmaster EZ5 Base Plate Kit for 2015 Honda Fit
    Replacement arms are available for the Roadmaster EZ5 Base Plate Kit # RM-521569-5 for your 2015 Honda Fit with the part # RM-ARMS. When the original base plate brackets and arms were manufactured, they were made as one part. To be sure that the new arms fit just as perfectly, Roadmaster requires a bit more information on your original base plate brackets than just the part number. To order to new driver's and passenger side base plate arms, you will want to open the Instructions link...
    view full answer...
  • Parts Needed to Flat Tow 2017 Honda Fit with Manual Transmission
    I checked the owner's manual for your 2017 Honda Fit with manual transmission and found that it can in fact be flat towed. The manual does list the steps required before flat towing which I will describe, however I recommend also checking your manual to confirm this process. The owner's manual lists these steps to take before flat towing: Shift to Neutral, Release the parking brake, turn the ignition switch to ACCESSORY - make sure the steering wheel does not lock. Then turn off all electrical...
    view full answer...
  • How To Get Replacement Arms For A Roadmaster 524430-1 Baseplate
    The only way to get replacement arms for your 524430-1, or any other Roadmaster baseplate is to complete the # RM-ARMS "Installation Details" form I have attached below and send it to Roadmaster.
    view full answer...
  • Parts Needed to Flat Tow a 2015 Honda Fit Behind a Motor Home
    Basically, the difference between EZ4 base plates # RM-521569-4 and EZ5 base plates # RM-521569-5 for the 2015 Honda Fit is the design of the draw bar arms. The EZ4 base plate arms have a wide flat front to attach to the Roadmaster tow bar crossbar. The EZ5 base plate arms have 2-prong ends that attach directly to the tow bar without the use of the crossbar. Both sets will work with the Falcon 2 tow bar # RM-520 but the EZ5 would be easier to use. The base plates include short safety...
    view full answer...
  • Roadmaster Guardian Rock Guard
    The # RM521440-5 Base Plate Kit is not recommended for the 2021 JGC Trailhawk model. You can use the Demco # DM9519291 kit or the Blue Ox # BX1128 to fit a Trailhawk, however these are not designed to work with the tow bar mounted rock guard. A good alternative would be the Rock Tamers # ERT00108 Adjustable Flap System. This fits over the 2" receiver that your tow bars connect to in the gap between the ball mount and the reciever.
    view full answer...
  • Replacement Arms for Roadmaster Base Plates
    We do have replacement arms available for Roadmaster base plate kits like # RM-523193-5 which fits the 2019 Chevy Equinox. The part is # RM-ARMS. When the original base plate brackets and arms are manufactured, they are made as one single part. So to be sure that the replacement arms fit perfectly, Roadmaster just needs a bit more information regarding your original base plate brackets. Prior to ordering, you will just click on the Installation Details at the bottom of the product page...
    view full answer...

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


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Adam R
Expert Research:
Adam R
Employee Tammy D
Written by:
Tammy D
Employee Shelly K
Updated by:
Shelly K
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Michael B
Updated by:
Michael B
Employee Isabelle B
Updated by:
Isabelle B
Employee Amanda K
Updated by:
Amanda K

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