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  1. Tow Bar Base Plate
  2. Roadmaster
  3. Removable Draw Bars
  4. Twist Lock Attachment
  5. Partially Hidden
Roadmaster Crossbar-Style Base Plate Kit - Removable Arms
etrailer Installation
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Roadmaster

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Part Number: RM-523198-4
In Stock
$575.00
Retail:$632.50
You Save: $57.50
Tow Bar Base Plate

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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 RM-523198-4 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-523198-4

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • Ready for Flat Towing: Creates secure frame-mounted points so you can safely tow your vehicle behind your RV.
  • Blends In When Not Towing: Hidden bracket design leaves a clean look with virtually invisible mounting points.
  • Quick Hookup and Release: Twist-lock removable arms click into place and detach easily for fast setup.
  • Built to Last: Computer-cut, all-steel construction with black powder coat resists corrosion and wear.
  • Simplifies Wiring Add-Ons: Integrated mounting points let you attach an electrical connector plug or bracket.
Made in USA

Features to know about

Made for a Clean Front End: Hidden Bracket Design with Removable Arms

If you want a clean, factory look when you’re not towing, this setup keeps it that way. The hidden bracket design tucks the hardware out of sight, and once the removable drawbars are pulled out, the remaining brackets are virtually invisible. They sit far back behind the grille where they stay protected from scrapes and scuffs, so the front end keeps its original appearance.

Hook Up Fast and Easy: Twist-Lock, Quick-Release Connection

Connecting your tow bar is simple thanks to Roadmaster’s twist-lock attachment. Each arm clicks into place in the bracket and locks with a quick twist. Built-in pull rings let you unlock and remove them just as easily. It makes setup fast whether you’re at home or on the road, and you don’t need tools every time you hook up or disconnect.

Built to Last Mile After Mile: Computer-Cut, All-Steel Construction

These base plates are made from computer-cut steel for precise fit and maximum strength. The black powder coat finish is durable and corrosion resistant, so you can count on the brackets to hold up through weather and road grime over thousands of miles of towing. The solid design gives you confidence that your setup will stay secure trip after trip.

DIY-Friendly Mounting: Bolt-On Installation with Integrated Mounting Points

You won’t need any welding to install this kit—just bolt it to the frame using the included mounting hardware. The design includes built-in points for attaching an electrical connector plug or bracket (sold separately), keeping things tidy up front. With clear instructions included, it’s a straightforward install for anyone comfortable turning a wrench on the weekend.

Stay Compatible with Your Gear: Works with Roadmaster Tow Bars

This base plate is designed to pair with Roadmaster tow bars when used with the quick-disconnect crossbar (910021-00, sold separately). That means you can keep your existing tow setup working together without extra hassle or mismatched parts. It’s a clean and reliable way to complete your flat-tow connection.

Specs

Construction

  • Material: All-steel construction
  • Finish: Black powder coat finish
  • Cutting method: Computer-cut for precision
  • Corrosion resistance: Durable and corrosion resistant

Design and Features

  • Bracket style: Crossbar-style brackets
  • Visibility: Virtually invisible hidden bracket design
  • Draw bar type: Removable Draw Bars
  • Attachment mechanism: Twist Lock Attachment
  • Mounting points: Integrated mounting points for electrical connector plug or bracket (sold separately)
  • Compatibility: Compatible with Roadmaster tow bars with use of quick-disconnect crossbar (910021-00 - sold separately)
  • Installation: Simple installation - no welding required
  • Fitment: Custom base plates ensure a perfect fit for your vehicle
  • Design feature: Partially Hidden when installed

Included Components

  • Instructions and mounting hardware: Included

Origin and Warranty

  • Country of manufacture: Made in the USA
  • Warranty: Limited Lifetime Warranty

523198-4 Road Master EZ4 Base Plate Kit

Installation Details RM-523198-4 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.8

2211 reviews
5 Stars
(1864)
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.

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Fast shipping



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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.



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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.



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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.



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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.



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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.



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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.



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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!



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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.



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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.



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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!



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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.



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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.



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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.



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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.



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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



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Fit as intended. Have pulled the truck approx 3000 miles, no issues.



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Customer service is 100 percent. Olivia knew about everything I needed and reminded me of something I forgot I needed. She shipped my parts overnight and they were on my porch first thing this morning. I will ALWAYS recommend etrailer to anyone that ask.



by:

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


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

  • Can I Install the Roadmaster Baseplate on My 2021 Sierra 1500 That Has an Aftermarket Bumper
    Hey, James. The baseplates that we carry, including Roadmaster part # RM-523198-4 are designed to fit on a 2021 GMC Sierra 1500 with the OEM bumper. Depending on how different the aftermarket bumper is, you will need to make modifications to the bumper for the base plate to fit. You can check if there is anything in the way on your bumper where the baseplate arms stick out. The arms are 18.25" from the ground. I included a picture of the front of the vehicle as well as a picture of what...
    view full answer...
  • Tow Defender Screen Protector for 2019 GMC Sierra 1500 with EZ-5 Direct Connect Base Plate Kit
    Since you are wanting to use the EZ-5 Direct Connect Base Plate Kit # RM-523198-5 with the Roadmaster BlackHawk 2 All Terrain # RM-422 for your 2019 GMC Sierra 1500 you need to use the Roadmaster Tow Defender # RM-4750 instead of the Roadmaster Tow Defender # RM-4700. If you already own the 4700 version then you'll need the Base Plate Kit # RM-523198-4 instead. I have confirmed all of this with Roadmaster.
    view full answer...
  • Can 2019 GMC Sierra 1500 Denali be Flat Towed and Parts Needed
    I took a look at the owner's manual for a 2019 GMC Sierra 1500 Denali and both it and the standard 1500 can be flat towed so long as it is a four-wheel drive with a two-speed transfer case, and according to page 236 of the manual, "To shift the transfer case, press the desired button" which seems pretty simple compared to some other vehicles! There are a number of parts you are going to need in order to flat tow this truck, which I'll list for you: - Base Plate Kit: Roadmaster Crossbar-Style...
    view full answer...
  • 2020 GMC Denali 1500 Flat Tow Setup
    To flat tow your GMC Sierra 1500 you'll need base plates, a tow bar, safety cables, a wiring harness, supplemental braking system and possibly a high/low adapter if the installed height of the base plate is more than 3 inches higher or lower than the receiver height of the motorhome. For base plates, the Roadmaster # RM-523198-4 you'd looked at would be a fine choice. From what I've seen online, the weight of the Sierra 1500 Denali maxes out at around 5000 lbs, in which case the Roadmaster...
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  • How To Set Up a 2019 GMC Sierra 1500 To Be Flat-Towed
    I have attached for you below the proper procedure to flat-tow a 2019 GMC Sierra 1500 (Two Speed Transfer Case Only) according to page: 404 of your owner's manual. 1. Position the vehicle being towed behind the tow vehicle, facing forward and on a level surface. 2. Securely attach the vehicle being towed to the tow vehicle. 3. Start the engine. 4. Shift the transfer case to N (Neutral). See “Shifting into N (Neutral)” under Four-Wheel Drive page: 238. 5. With the engine running, release...
    view full answer...
  • Will Roadmaster Base Plate Kit Interfere With Adaptive Ride Control System On 2020 GMC Sierra Denali
    I reached out to my contact at Roadmaster and he confirmed that the Roadmaster Direct-Connect Base Plate Kit # RM-523198-5 and Crossbar-Style Base Plate Kit # RM-523198-4 will NOT interfere with the adaptive ride control system on your 2020 Sierra 1500 Denali 4WD Crew Cab with the 3L diesel. With that being said, I recommend the Direct-Connect # RM-523198-5 as it offers the same rigidity as the Crossbar-style, but will be one less thing to deal with when installing your tow bar. I included...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Where To Mount the Flat-Tow Electrical Connector on a 2019 GMC Sierra 1500
    The best place to mount the electrical connector is directly to the front bumper fascia, below the chrome moulding. I have attached a few photos of this for you as well on the Roadmaster Crossbar-Style Base Plate Kit part # RM-523198-4 but it shouldn't really matter which kit you have. If you don't already have a flat-tow wiring harness for your vehicle then I recommend the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 because it will then allow you to incorporate...
    view full answer...
    Image 1 for Image 2 for
  • Supplemental Braking System for Jayco Seneca Towing 2019 GMC 1500 That Installs Out of the Way
    I don't know much about the Readybrute Elite towbar since it's not a product that we offer, but from what I was able to find it looks like they're compatible with a number of different manufacturer's base plates. If you do need base plates to connect it to, I recommend using the Blue Ox # BLU54VR since they will be compatible with your Blue Ox clevises. When it comes to supplemental braking that has the cleanest looking installation that you'll barely notice once it's on your vehicle,...
    view full answer...
  • Is Drilling Required When Installing The Roadmaster Base Plate RM-523198-4 On A 2024 GMC Sierra 1500
    No, you will not need to drill into the frame when installing the Roadmaster Base Plate # RM-523198-4 on a 2024 GMC Sierra 1500. Installation will require some trimming/cutting of the plastic bumper fascia, as well as potentially the spoiler, air dam or grille. Tow hooks, if present, will be permanently removed. I have linked the manufacturer instructions below if you want to take a closer look.
    view full answer...


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Lindsey S
Edited by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Mike S
Written by:
Mike S

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