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Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Item # 523173-4
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Roadmaster Twist Lock Attachment Base Plates - 523173-4
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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 523173-4 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster Crossbar-Style Base Plate Kit - Removable Arms. Base Plates reviews from real customers.
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  • Reviews (123)
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  • Why etrailer?

Roadmaster Base Plates - 523173-4

  • 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.


Features:

  • 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
  • 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.



523173-4 Road Master EZ4 Base Plate Kit

Installation Details 523173-4 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms - 523173-4

Average Customer Rating:  4.8 out of 5 stars   (123 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.

by:
2014 Chevrolet Sonic

This is the third baseplate I have installed on a car. The instructions are very clear and the photos are helpful to see. Better instructions (or photos) on pulling the side bumper up and out will help keep the locking tabs from breaking on the upper front fender area. A very good product with my Falcon 2 towbar.




by:

It was easy to put on a Chevy sonic




by:
2012 Chevrolet Sonic

Great product and installation went very smoothly. Installed myself in about 2 hours. Fit perfectly and mounted easily to the car. My Stowmaster tow bar mounted right up to it. I deliver motor homes for a living and can already see how this setup is going to save me lots of time and aggravation over old fixed tow bar set-up I had previously.




by:

Very happy with your service-ordered Monday and got our Order wed the same week




by:

As usual, another excellent product from etrailer.com . I wanted to try to install it myself, but my wife didn't trust me(!). So I had a local body shop do it. They had never installed that part before, but with the great instructions I that came with the product, they did it.




by:
2014 Chevrolet Sonic

Installation instructions supplied, and website videos made installation very easy.........thnks.. order delivery very fast....thnks.




by:

Product was as advertised, installation was as well with the additional help of the You Tube video. Video was helpful for a first timer.




by:
2013 Chevrolet Sonic

Tough for an old man (83) and his old man brother-in-law (77) to get it mounted, but we got it done so I am completely satisfied with the product!!




by:

First off, i'd like to say it went together great. Some of the pics took some studying, and I haven't figured out where I'm going to mount the break a way switch. Delivery was fast, I got it two days earlier than predicted.




by:

Easy-to-use. Insrutions were thorough and easy to follow.




by:

Product works very well for towing our car.




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by:

Review from a similar EZ2 Base Plate in Base Plates


2018 Fiat Abarth install - Videos of install from etrailer helped a bunch. My 2018 fog lights on the Abarth required some trimming on the inside of the bumper cover. Photos in the instructions did not accurately depict my 2018 Abarth, but taking the grill and fog light assemblies off of the bumper cover allowed me to see what needed trimming. Basically a 1 inch notch with the dremel did the trick. I also got the rock guardian and falcon all terrain tow bar. super quick to assemble and disconnect. CLEAN LOOKING INSTALL WHEN EVERYTHING IS REMOVED.


Comments
Over the past year, i have towed the Fiat behind the motor home for 15000 miles or so. Rock Solid. Highly recommend. Ive had 2 blow outs on the motor home and the tread bounces off the Road Master Guardian without damaging the Fiat. The Guardian is scuffed and scratched and handling it well.
SanfordTurbo - 08/23/2021


by:

Review from a similar EZ2 Base Plate in Base Plates


After comparing Demco, RoadMaster, and Blue Ox base plate costs, mounting procedures, etc for my 2012 Fiat Sport, I decided to go with RoadMaster (Kit #522013-1A) for two main reasons: 1) I had the tow bar and mount adapters from another product that were the same specs as the RoadMaster tow bar and adapters to attach to the base plate, and 2) no drilling or other modifications required to mount the base plates. Blue Ox (Kit #BX2800) required I buy their tow bar and other unique configuration adapters PLUS drill two half-inch holes on either side where the base plate mounted AND hammering flat the tips on the corners of the bumper bracket the frame where the base plate mounted. Blue Ox did provide better details on the removal of the facia and bolt removal and torquing actions required for the Fiat. My biggest challenge was the removal of the facia without damaging the clips or other damage to it. Once it was off, the action of removing the bumper core from the end of the frame rails and bolting on the base plate was slick! I took a little over 4 hours to do this, but it was because I wanted to do it right, without damage, and have the confidence I could tow without issues. (Not sure how sequence will show, but labeled the pictures as "Before," "Removal," "Installation," "Finished," and "Ready to Tow.")


Comments
Hate that every 3,000 miles towing have to re-torque bolts of base plate. Good product otherwise.
Bill F - 10/15/2016



by:

Review from a similar EZ2 Base Plate in Base Plates


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!!




by:

Review from a similar EZ2 Base Plate in Base Plates


First of all, thank you etrailer for getting the Baseplate Kit for my Chevy Spark to me in time for my trip. Everything I needed was in the box. The step by step instructions were very easy to follow. I would definitely take their suggestion to read and understand the instructions before beginning the job. That step allowed me to always know what was coming next. Several holes need to be drilled, no problem with location, it is all in the instructions. Be sure to have good sharp bits. The whole process is an easy bolt on. I work slowly and got it done in one afternoon. At the end, after installing the baseplate, when you put the front facia back on the car, they suggest leaving off the Styrofoam inner bumper but I found no need to do that as it still fit right back on no problem. It would be up to you to leave it off or not. I thought it would be safer with it on there as was the original. In the end I added a light kit with a 4 round plug on the front. Very well thought out for Roadmaster to supply a place to mount the receptacle. Thanks again, I can now leave on time and take my car with me.




by:

Review from a similar EZ2 Base Plate in Base Plates


This was the second base plate kit from etrailer that I have installed, the first being on our ‘03 Outback and this one on our new to us 2015 Subaru CrossTrek. As usual the response, shipping and delivery from etrailer was prompt and curious. They are my go to place for anything towing related.
Installation of this kit went well with only a few issues, most of which were related to our vehicle not the kit. I knew the car had been hit lightly on the LF corner, but could find nothing of concern body or frame wise when I looked the car over before buying it. Turns out the front bumper reinforcement had been tweaked a tad which made lining the bolt holes up with the holes in the base plates a tad challenging. This made the small angle brackets that go inside the frame heads tough to line up, but in the end it all fit. I did find that it was unnecessary to pull the washer reservoir or the left headlight to access the nut and washer for the long 1/2” bolt. You can easily reach and see the place from underneath after pulling the plastic encapsulation panel. When drilling that 1/2” hole be sure to angle the drill bit UP a tad otherwise you may end up having to grind a flat on the side of the large, thick washer as you can see in my picture from underneath. I used shrink wrap over the nut and bolt since there’s a wiring harness right against it. The picture of the baseplate differs a bit from the pictures so I guess they made some changes. All in all a great kit!


Comments
It’s been a year now and probably 7,000 miles later and everything has held up perfectly despite some darn rough roads between MD and Albuquerque, NM and back.
Chris - 03/16/2020


by:

Review from a similar EZ2 Base Plate in Base Plates


High quality, heavy gauge steel crossbar that was very easy to to mount to the car frame. The Roadmaster brand is the way to go and the pricing at etrailer is great. etrailer's support and customer service is by far above the rest.




by:

Review from a similar EZ2 Base Plate in Base Plates


Received the base plate within 3 days of ordering. Very fast and efficient service! Within 15 minutes of receiving the base plate and wiring kit I received an email from Carol at etrailer saying she got notification that it was received and to make sure everything was O.K. Excellent customer service!! The installation was pretty straight forward. The installation tutorial video posted by etrailer was very good and helpful. Will order from etrailer again when the need arises. Highly recommend them.


Comments
Still going strong. This last summer towed the vehicle behind our motor home for over 3500 miles. Not a bit of problem!
RONALD D - 12/17/2019


by:

Review from a similar EZ2 Base Plate in Base Plates


The baseplate fit perfectly. The instructions and video on the the etriler site made the install relatively easy for me being a DIYer. I am pleased with the no-obtrusive aspect of the the Roadmaster base plate. Wouldn't know it was there just by looking at the front end of my 2018 Ford Taurus.




by:

Review from a similar EZ2 Base Plate in Base Plates


the install directions were on the spot. install was time consuming but, relatively easy with the car on a set of ramps. one year and 9000 miles later. everything is still solid and tight




by:

Review from a similar EZ2 Base Plate in Base Plates


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:

Review from a similar EZ2 Base Plate in Base Plates


The original pins were difficult to remove so I replaced them with the pin that has a grip handle. Much easier way to remove and set the pins.




by:

Review from a similar EZ2 Base Plate in Base Plates


I bought and installed base plate and wiring on a 2018 Ford C-Max hybrid car. The wiring was a little complicated due to the hybrid setup on the car, however, everything worked out well. I have done this on several other cars I have towed behind my motorhomes. All products and help from etrailer.com was excellent. The video presentation was very helpful.




by:

Review from a similar EZ2 Base Plate in Base Plates


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.



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See what our Experts say about this Roadmaster Base Plates

  • Install Video to Use as Guide for Base Plate Kit for a 2015 Chevy Sonic
    The Roadmaster base plate kit part # 523173-4 is a confirmed fit for your 2015 Chevy Sonic and I attached an install video that shows it being installed on a similar 2014 Sonic as yours. The install would be similar but the Roadmaster uses slightly different brackets that attach to different holes on the Sonic. The video will help you through the steps for accessing the portion of the vehicle where the base plate installs but wouldn't be exact.
    view full answer...
  • Base Plates For 2013 Chevy Sonic Sedan
    The # 523173-1 base plates have been replaced with Roadmaster Base Plates, part # 523173-4, so that it is compatible with all Sonic models. This has a black powder coat finish, and has all the mounting hardware needed. I have linked you to an FAQ article about flat towing.
    view full answer...
  • Does Cooling Modifications Required to Install Base Plate on a 2016 Chevy Sonic Affect Cooling
    There are some minor modifications needed to install the base plates for the 2016 Chevy Sonic like the part # 523173-4 and # 523173-5. Roadmaster has tested the vehicles thoroughly after making these modifications to determine that there was no adverse affect on the vehicles. Some holes need to be enlarged on the bumper, but there is no frame modifying to install the Roadmaster base plates.
    view full answer...
  • Trailer Hitch and Base Plate Kit Recommendation for a 2013 Chevy Sonic Hatchback
    Since you have a hatchback model of the 2013 Chevy Sonic you will have to get on of the hitches for your vehicle that has a visible cross tube. The hidden cross tube hitches are for the sedans only. Of the hitches that are confirmed to fit the hatchback models I would recommend the Draw Tite hitch part # 24878 over the Curt hitch part # C11258 as the Curt has a bracket that goes under the exhaust and the Draw Tite goes over it making it less visible. I attached an install video for you...
    view full answer...
  • Base Plate Kit Recommendation for a 2013 Chevy Sonic
    As long as you get a Roadmaster base plate kit for your 2013 Chevy Sonic like the part # 523173-4 your current Roadmaster Falcon Tow Bar like part # RM-522 would work well. I attached a help article on flat towing for you to check out as well.
    view full answer...
  • Parts Needed to Flat Tow 2012 Chevy Sonic
    All of the parts you mentioned are a fit for your 2012 Chevy Sonic. The base plate kit part # 523173-4 is a confirmed fit and the other parts like the Roadmaster tow bar part # RM-520, safety cables # RM-643, and braking system # RM-9400 are a great fit. Since you will be using a magnetic light kit you don't need the relay # RM-88400 though.
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  • Can Roadmaster Base Plate Arms from a 2008 Jeep Liberty Fit a 2012 Chevy Sonic
    Like the base plates that attach to the vehicle frame, the arms are also unique to the system and vehicle so the old ones would not work with the new vehicle. Base plate kits are not available without the arms. In addition to the base plates, you will need a compatible tow bar. The base plates for the 2012 Chevy Sonic are EZ style base plates compatible with all Roadmaster tow bars. If you do not have a Roadmaster tow bar there may be an adapter that will work. If you need safety cables...
    view full answer...
  • What is the Difference Between Roadmaster Direct Connect and Crossbar Style Base Plates?
    To answer the essence of your question before getting into some specifics, the difference between the cross bar and direct connect style of base plate can be broken down like this: the Roadmaster Direct Connect Base Plate # RM-523173-5 is going to provide for an easier connection to your tow bar than the Roadmaster Crossbar Style Base Plates # 523173-4 . A lot of people stick with Crossbar style base plates because they have an old tow bar they want to continue using from a previously...
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  • Recommended Parts Needed For Flat-Towing 2013 Chevrolet Sonic
    When flat-towing there are a few things you need. You will need base plates, a tow bar, safety cables, lighting for the towed vehicle, and a supplemental brake system. I can help you with those items. For a base plate kit I recommend the Roadmaster EZ4 Base Plate Kit # 523173-4. The tow bar I recommend is the Roadmaster Falcon All Terrain, part # RM-522. For safety cables I recommend safety cables like part # RM-643. For lighting you can use a light kit like part # RM-2120. The...
    view full answer...
  • Roadmaster EZ4 Base Plate and Stowmaster Tow Bar Compatibility on 2012 Chevrolet Sonic
    The Roadmaster EZ4 Base Plate Kit # 523173-4 that fits your 2012 Chevrolet Sonic is fully compatible with their Stowmaster # RM-501 and all other Roadmaster tow bars. Flat towing a vehicle requires a number of components in addition to the base plates and tow bar. You also need for safe and legal flat towing safety cables like # RM-643, a lighting kit like # RM-2120, a braking system like the Blue Ox Patriot # BLU37TR and often a high/low hitch adapter to keep the tow bar level. The linked...
    view full answer...
  • Recommended 2016 Chevrolet Sonic LTZ Auto Flat Tow Equipment
    For a permanent install braking system for your 2016 Chevy Sonic the SMI DUO Stay and Play part # SM99251 is the best option. But if you wanted something that installs easier but requires removal and re-installation every time it's used the Blue Ox Patriot part # BRK2019 is the best option for that. You'll need the outlet kit part # RM-9332 to go along with this to power it. For a base plate kit the part # 523173-4 is a confirmed fit and would work well. The most popular compatible tow...
    view full answer...
  • Parts Needed to Flat Tow a 2012 Chevrolet Sonic
    Before you begin flat towing your new 2012 Chevrolet Sonic, you will want to verify a few things first. If your vehicle has a 1.4 Liter engine and an automatic transmission, then it cannot be flat towed and must be towed using a tow dolly, like part # RM-2050-1. If it has a 1.4L engine and a manual transmission, or has a 1.8L engine and is automatic or manual, then you can flat tow your vehicle. The items that you will need to flat tow your vehicle are a tow bar, base plate kit, wiring...
    view full answer...
  • Need Base Plates and Tow Bar for 2014 Chevrolet Sonic That are Easy Enough to Install Myself
    For your 2014 Chevrolet Sonic, I recommend going with the Roadmaster EZ4 Base Plate Kit, # 523173-4. These base plates offer simple installation with no welding required and best of all, we have an installation video that will walk you right through the process. Now for the tow bar, take a look at the RoadMaster Falcon All Terrain, # RM-522. The telescoping arms on this tow bar hook up with ease and automatically center and lock as you drive ahead to prevent sway and make hooking up quick...
    view full answer...
  • Which Accessories are Needed to Flat Tow 2013 Chevy Sonic
    To safely flat tow your Sonic, you will need the following items: a tow bar, base plates, safety cables, a wiring solution and a supplemental braking system. I would recommend the Roadmaster Falcon 2 tow bar, part # RM-520. The Flacon 2 features quick disconnects and auto-locking arms that allow you to couple to the RV even if the car is not perfectly lined up behind the RV. To provide an attachment point on the vehicle to connect the tow bar, you will need to install a base plate kit,...
    view full answer...
  • Recommended Flat Towing Setup for a 2014 Chevy Sonic
    The base plate kits we currently offer will fit all models of the 2014 Chevy Sonic. I recommend the Roadmaster EZ4 base plate kit # 523173-4 because the brackets are nearly invisible once installed. It's a simple installation as no welding is required. Note that trimming of your spoiler, air dam, grill or fascia may be required on some models. Since you are flat towing your 2014 Chevy Sonic, you will need the following items: a tow bar, safety cables, wiring and a supplemental braking...
    view full answer...
  • What Parts are Needed to Flat Tow a 2012 Chevy Sonic Behind a Class C Motor Home
    The first thing you are going to want to do is consult the vehicle owners manual for the proper towing procedure of the vehicle. If it states you can flat tow it then there are 5 items you will need. First, you will need base plates on the vehicle to provide a safe attachment point for a tow bar. You can use EZ2 style base plates, # 523173-4. These base plates are compatible with all Roadmaster tow bars. The most popular tow bar is the Falcon 2, # RM-520 that you have referenced. I have...
    view full answer...
  • Parts Needed to Flat Tow a 2013 Chevy Sonic with a Sterling Tow Bar
    The Sterling tow bar, # RM-576, is compatible with all Roadmaster base plates. For a 2013 Chevy Sonic you can use EZ base plates # 523173-4. In addition to the base plates and tow bar, you have said that you have everything you need. But just to be sure I will cover the other items needed to flat tow a vehicle. If you do not already have safety cables (the Sterling tow bar should have them) you can use # RM-645. You will also need a light solution. The Sterling tow bar is supposed to...
    view full answer...
  • Recommended Tow Bar and Flat Towing Equipment for 2014 Chevy Sonic
    According to my research, the Sonic is capable of being flat towed, but I'd urge you to confirm that for yourself by consulting your owner's manual or Chevy. You'll need base plates like the Roadmaster # 523173-4 and a tow bar like the Roadmaster Falcon 2, part # RM-520. The Falcon 2 is very easy to use, featuring auto lock arms that allow you to hitch the tow bar up to the base plates even when the vehicle and the motorhome aren't perfectly aligned. You'll also need safety cables, part...
    view full answer...

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