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Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Our Price: $485.00
Base Plates

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Shipping Weight: 50 lbs
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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 RM-521569-4 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Crossbar-Style Base Plate Kit - Removable Arms. Base Plates reviews from real customers.
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  • Reviews (876)
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Roadmaster Base Plates

  • 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.



521569-4 Road Master EZ4 Base Plate Kit

Item # RM-521569-4

Installation Details RM-521569-4 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms - RM-521569-4

Average Customer Rating:  4.8 out of 5 stars   (875 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:
2015 GMC Terrain

I installed this kit on my 2015 Honda Fit. The instructions are very good, however, there are a couple of "snags" to watch out for. You might have to enlarge the holes on the blind hole part of the bumper installation in order to get all of the mounting bolts to align. The other recommendation I have is NOT to use the Loctite "red" thread compound on the blind hole bolts where you cannot get a wrench on the inside. The Loctite will dry too fast and cause issues tightening the bolts on those areas. They have lock washers anyways and you can use the Loctite on the bolts you can get a wrench on the backing nut mounts. I have been towing for months now and I am very happy with it, especially the crossbar style. You will have to purchase the crossbar separately. It's more weight and a little clunky compared to the direct attachment but it allows you to disconnect in some tough situations by pulling the crossbar off while one arm of the tow hitch is still attached. I use an Falcon All Terrain tow bar so I can release the tow arms in uneven conditions. And I have encountered all types of uneven ground, it really makes disconnect of the TOAD very easy.

Steve L.

8/18/2023

It is still working out great.

Etrailer Expert

Mike L.

9/13/2023

@SteveL Great, glad to hear that!


by:

Expect to have to adjust the flanges to fit. We had to bend the base plate flanges out by 1/4" in order to install the base plate to the frame of the car. Have a big vice handy! Other wise a well made product with very good directions.



by:
2015 Honda Fit

The parts I order were deliver promly and the installation went well. I would definely order from them again.



by:

Heavy duty and installed easily. Fit our car like a glove.



by:

We love the setup!



by:
2017 Honda Fit

I found what I needed and ordering was easy and I couldn't find a better price.



by:

This was a straightforward install. The instructions were easy to understand and follow. All the necessary parts and hardware were included. It is pretty well hidden once installed. I highly recommend this base plate and etrailer.



by:

Had Base Plate installed today, shop gave me 2.5 hr labor time. I returned just under 2hrs and they were backing my car out the shop. They parked it facing me. I told the Mechanic "That was quick" He said that's because it wouldn't fit. I was disappointed and asked what do I owe you for your labor> He laughed out loud and said it on there, but hard to see. I was so surprised and pleased you have to just about get down on your knees and bend down to see it. took me about 8 min to install everything and connect it to the Tow vehicle. I'm very pleased with it.



by:

Ordered Product on Saturday afternoon, delivered on Wednesday, Installed on Friday. My 23 Wrangler Sahara 4Xe did take the spacer and washer on each side of the frame and was no problem getting them to fit. The lower passenger outside nut that holds on the bumper will not tighten down all the way, the flange of the factory nut gets caught in a slot in the base plate on that side. Will look into a standard nut to see if that will work - it is tight against the slot and holding.



by:

So far has performed very well. Was easy to install and hookup is pretty quick and easy. You install instructions were very thorough. Practically invisible when not in use. Tried to attach two pics, but would only take one.



by:

Super-cool. It's been a year. I installed it myself and it was way less of a task than I expected. The fitment of this was incredibly spot on (no "tweaking" or drilling). Performance wise . . . it does what you expect. You insert the removable "arms", clip in onto your tow bar, and when you get to your destination the vehicle is still attached to your tow bar. Quality product.



by:

I’m always extremely satisfied with Roadmaster products. I had just bought a new truck and planned on towing it so I needed everything to get it ready to tow. This review also applies to to the other items I purchased.



by:

Good fit, works well. Very happy with the base plate after 1st year of use.
etrailer staff was very helpful with my questions, making certain I got the base plate that was right and advice with minor problems I had with installation.



by:

great fit. a slight cut needed to be made in the bumper bracket to facilitate the round tube to fit through the bracket. but, other than that, it was an easy install took about 2 hours if you include the coffee brakes. this part is highly recommended. Fast shipping. the beast human service. thank you.



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:

Great product for my 2014 Wrangler. Good materials, solid attachment to vehicle, and looks good. The e trailer installation video was great for assisting installation. Made the install much quicker and easier. The most difficult procedure for me was disconnecting the wiring harness on the back of the bumper. An old tack puller (or tool of similar design) would have been great for leveraging the pins out of their holes. Cutting the air dam was a slow process to ensure I didn't cut too much. A paper template to mark where to cut the air dam would make this process much simpler. Again, I can't emphasize enough how great the installation video was for making the steps easier.



by:

etrailer service was great. Received my Roadmaster base plate in 3 days. The directions from Roadmaster were fair, but etrailer's video was excellent. I had trouble mounting my base plate as the space between the two baseplate ends were too tight. I needed to use a floor jack and bottle jack to get it on. Once it was in position everything went together fine. I trimmed the Jeep' air dam differently keeping the ends that Roadmaster wants you to cut off. I think it looks better. I also had to modify the center cut in the air dam to accommodate the breakaway switch I have.



by:

2019 Ford Fusion Energi. A lot more trimming required on the facia than noted in the instructions, but I'll chalk that up to running changes I suppose. I used a combination of a Sawzall with a fine blade and a Dremel tool, both worked well. In the end, it took me about 8 hours (over two days) to install, and had it's challenges. I had to do some pulling and tweaking to get holes to line up, and the already mentioned extensive trimming of the facia. Overall well designed product, and of course etrailer was excellent in shipping.

Side note, adaptive cruise control is not affected when the drawbars are removed. With the bars in and the towbar mounted (it's a Stowmaster car mounted bar) the cruise control works just fine as an old fashioned CC, the adaptive part just doesn't work (it won't slow down for you when a slow car is in front, because it can't see around the tow bar). Basically perfect and what I was hoping would happen.



by:

Baseplate did not fit vehicle. Apparently it was manufactured icorrectly. All other baseplates for this vehicle were also manufactured improperly so engineering had to come up with new install procedures. Took a week to make that happen. Also, received new Easy Connect modules that are identical to one I already had.



by:

Unfortunately first set was defective from Roadmaster. Etrailer sent another set and return label which installed correctly, eTrailer was great to work with.



by:

Installed myself with help of one friend. Assistance with install using the videows was invaluable. The installation on a brand new vehicle brought praise and comments on how clean the install looked. Great job etrailer.



by:

So far so good. It arrived sooner than expected. Very pleased. Installing it tomorrow. I’ll try to update later.



by:

Followed directions and completed job in a little over 4 hours. had trouble reinserting some pins in difficult locations.

Later in the month I installed the wiring tow package. Goofed up and crossed a wire and it took me two days to get back under the truck and rewire. all is working great according to directions...…….

I will use etrailer again, good service, great service representatives...……..jt



by:

great kit to add a baseplate to my 2019 jeep wrangler. It takes several hours for one person to install, but if you follow the instructions and watch the video it's straight forward and easy to install.



by:

Fast delivery, correct parts, excellent installation instructions, and everyting fit! I would buy from this seller again.


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Show More Reviews

See what our Experts say about this Roadmaster Base Plates

  • How to Flat-Tow a 2015 Honda Fit Manual
    According to the owner's manual for your 2015 Honda Fit, if you have a manual transmission then you can tow the vehicle behind a motorhome. If the vehicle will be in tow for more than 8 hours then you are going to need to remove a few fuses even if a battery charger is installed. The correct fuses to remove will be located on page 309 and page 310 in your owner's manual. You can use part # RM76512 and part # RM76511 to eliminate manually pulling the fuses each and every time. If you have...
    view full answer...
  • Can a 2015 Honda Fit Sport Automatic Be Flat-Towed With 4 Wheels on the Ground
    According to one of our primary resources for flat-towing information, Roadmaster Engineering, the 2015 Honda Fit is flat towable. However, your new Fit owner's manual is the best place to check for any cautions or special requirements for flat-towing your exact version of the 2015 Fit Sport. We offer Roadmaster base plates for the manual transmission version of the 2015 Honda Fit Sport. That is their EZ4 Series Base Plate # RM-521569-4. Please refer to the linked instructions at right....
    view full answer...
  • Parts Needed to Flat Tow 2017 Honda Fit Manual Transmission
    First let's start with a base plate kit for your 2017 Honda Fit with a manual transmission. For that you would want the Roadmaster part # RM-521569-4 which is a confirmed fit for your vehicle. 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 of...
    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...
  • Are Roadmaster EZ4 Base Plates # RM-521569-4 Confirmed to Fit 2015 Honda Fit
    The 2015 Honda Fit is part of this vehicle's 3rd generation, which began with the 2013 model year. The Roadmaster base plates you referenced, their part # RM-521569-4, are a confirmed fit for the 2015 model year with manual transmission. This Roadmaster kit features Twistlock series brackets that are virtually invisible and provide a much cleaner appearance. The written installation instructions are linked for you. According to my primary resource for flat-towing information, Roadmaster...
    view full answer...
  • Flat Towing Parts Needed for a 2015 Honda Fit
    If your 2015 Honda Fit has a manual transmission it can be flat towed with all 4 wheels on the ground. The automatic vehicles can not because of the CVT transmission. For a base plate kit you would want the part # RM-521569-4. 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...
    view full answer...
  • Can a 2017 Honda Fit be Flat Towed?
    I took a look at the owner's manual for a 2017 Honda Fit and it says that only models with a manual transmission can be towed with 4 wheels down, also called flat towing. There are a number of parts you're going to need in order to do this, starting with compatible base plates. I recommend the Roadmaster EZ4 Base Plate Kit # RM-521569-4. For a tow bar I recommend going with the Roadmaster Falcon 2 Tow Bar # RM-520 because of how easy the tow bar is to connect to the base plates and the...
    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...
  • Using a Tow Dolly for 2017 Honda Fit
    From my online search results it appears that using something such as the Roadmaster Tow Dolly, # RM-2050-1 is acceptable per the owners manual. Only models with a manual transmission can be towed with 4 wheels down, also called flat towing. If you decide to consider flat towing (manual transmission only), you will need: - Roadmaster EZ4 Base Plate Kit, # RM-521569-4 - Roadmaster Falcon 2 Tow Bar, # RM-520 - Safety Chains, # RM-643 - Roadmaster Universal Hy-Power Diode Wiring Kit, #...
    view full answer...
  • Can a 2017 Honda Fit w/ Manual Transmission be Flat Towed Behind a RV
    I checked the owners manual for the 2017 Honda Fit and it states that the manual transmission model can be flat towed behind your motorhome. The procedure for prepping the vehicle for towing are listed on page 308 of the manual. The procedure is as follows: 1. Shift to N ( neutral ). 2. Release the parking brake. 3. Turn the ignition switch to the accessory position or press the Engine Start/Stop button if equipped. Make sure the steering wheel does not lock. 4. Turn off all electrical...
    view full answer...
  • What Fuses Need to be Bypass or Removed Flat Towing a 2017 Honda Fit
    After reviewing the owner's manual for your 2017 Honda Fit for extended towing you will need to remove the 20 amp accessory power socket and 7.5 amp ACC fuses on the interior fuse box. You will also will remove the 15 amp back up fuse located in the engine compartment fuse box. To make this process easier, I highly recommend adding the Roadmaster FuseMaster Fuse Bypass - 13" - 20-Amp Mini-Fuse # RM76511, the Roadmaster FuseMaster Fuse Bypass Switch for Towed Vehicle - (2) 20-Amp ATM Mini-Fuses...
    view full answer...
  • What Fuses Need to be Pulled to Flat Tow 2017 Honda Fit
    I took a look at the online owner's manual for your 2017 Honda Fit EX. It starts off by stating that only the manual transmission models of the Honda Fit can be towed behind a motorhome with all four wheels on the ground. For extended towing (more than eight hours in one day) you will need to remove the 20 amp accessory power socket and 7.5 amp ACC fuses. These fuses are located in the interior fuse box. You will also want to remove the 15 amp back up fuse located in the engine compartment...
    view full answer...
  • Parts Needed to Tow a 2015 Honda Fit Either Flat Towing or on a Tow Dolly
    In addition to the Roadmaster Falcon 2 Tow Bar # RM-520 you'll also need a base plate kit, wiring, a supplemental braking system, and likely a high-low adapter to flat tow your Fit. According to my research a 2015 Honda Fit cannot be flat towed according to Honda. However, you'll want to consult your owner's manual to make sure your vehicle is able to be flat towed without damaging it. If the Fit must be towed on a dolly you can use the Roadmaster Tow Dolly # RM-2050-1. If you find...
    view full answer...

Do you have a question about this Base Plate?


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video by:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Laura H
Written by:
Laura H
Employee Mike S
Updated by:
Mike S
Employee Isabelle B
Updated by:
Isabelle B
Employee Ryan G
Test Fit:
Ryan G

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