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Roadmaster

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Part Number: RM-523198-4

2221 Reviews | 9 Questions

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$575.00

Retail:$632.50

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2005 Pontiac GTO

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Product Images

roadmaster tow bar base plate twist lock attachment partially hidden

roadmaster tow bar base plate twist lock attachment partially hidden rm-523198-4

roadmaster tow bar base plate removable draw bars crossbar-style kit - arms

roadmaster tow bar base plate partially hidden rm-523198-4

roadmaster tow bar base plate removable draw bars

roadmaster tow bar base plate twist lock attachment rm-523198-4

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SCHEDULE AN INSTALLATION

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.

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

2019 - 2022 GMC Sierra 1500
2023 - 2026 GMC Sierra 1500 excluding AT4X models with AEV bumper
2022 - 2022 GMC Sierra 1500 Limited

Customer Satisfaction Score:

91% were satisfied with this product

9% of customers were not satisfied

Wrong item was ordered
Manufacturer issue

9% of customers were not satisfied

Wrong item was ordered
Manufacturer issue

4.8

2221 reviews

5 Stars		(1871)
4 Stars		(264)
3 Stars		(48)
2 Stars		(13)
1 Star		(25)

by: William 12/05/2023

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

by: Dennis 10/09/2019

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: David 12/31/2020 One Year Later

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

by: Keith 02/03/2026 One Year Later

by: Ryan 08/14/2025

by: Ken 08/23/2022

2017 GMC Sierra 2500

by: Gerald 04/25/2024

2024 GMC Sierra 1500

by: Bruce A 07/02/2026 One Year Later

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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Claire H.

7/6/2026

It really is invisible! It took me a second to even find the base plates in your photo!

by: Christian 05/13/2026

1995 Jeep Grand Cherokee

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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Kate F.

5/14/2026

Thanks for the review and for sharing your installation experience Christian. Your tip about leaving the bumper on during install is really helpful, especially since fitting the ends through the louvers can take a little extra maneuvering. It’s also great to hear the setup works well with your Stowmaster 5000. The install looks great, and we appreciate you sharing the picture! Where did you go for the first trip?

Christian

5/20/2026

@KateF Hudson Parcher County park in Rainier, OR

Kate F.

5/21/2026

@Christian I just looked it up, looks like quite the magical place! Thanks for sharing =)

by: Robert 01/06/2025

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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Robert One Year Later

1/7/2026

Everything related to my Mini towing system is working great after a year of use.i do wish I had bought a cover for the tow bar though. Keeping it clean would be easier with the cover. Great products and service from etrailet

by: Robin 11/21/2024

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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Robin One Year Later

11/25/2025

Working great these are durable tow bars Have no problems with them easy to hook up and tows vehicle without no problems .

by: Charlevoixboy 12/10/2025

2007 honda Element

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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by: Michael 12/03/2025 One Year Later

2004 Subaru Impreza

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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by: James 07/02/2025 One Year Later

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.

James One Year Later

7/3/2026

New system working fine. As with previous system it requires towed vehicle to be nearly perfectly aligned straight behind motorhome to disconnect without considerable tension.

by: David 05/23/2025

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.

David One Year Later

5/24/2026

It continues to work flawlessly

by: Steven 08/09/2026

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: Thomas 07/29/2026

2015 Chevrolet Equinox

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)

Christopher H.

8/4/2026

Thanks for you feedback Thomas! Sounds like the install went smooth. Hope you have a great summer!

by: Brad 06/22/2026

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: Larry 05/05/2026 One Year Later

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.

Claire H.

5/7/2026

Thank you so much for the kind words and being a repeat customer with us! We look forward to helping you out with all your future adventures!

by: Julie 05/30/2025 One Year Later

Purchased for a 1997 Subaru Impreza. Delivery was amazingly fast! I didn't have it installed until a few months later, as my travel plans had stalled. It didn't quite bolt right on, but was close, and a friend had to modify it some to make it work. I still hear a grating noise when I turn too sharp on one side, but otherwise it's fine.
The front connection plates didn't line up with the holes, so had to have those modified, as well, in order to line up and attach to the tow bar. Once the new holes were drilled, I was able to hook up and go.
It's relatively easy to connect after finding a way to do it alone.
I've towed from CO to TX and all over TX with it with no problems.

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by: Mike 08/16/2026

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: Rob 01/19/2019 One Year Later

2019 Chevrolet Equinox

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

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Rob One Year Later

1/21/2020

Everything is working great, I installed a base plate kit, battery charging kit, stop light switch kit, second vehicle air brake kit w brakeaway and seat adapter on our 2019 Chevy Equinox and towed it about 14000 miles behind our motor home this past year and everything worked perfect not a problem with any product. These are great products, everything fit perfectly and performed perfectly. Thank you for great service and great products. Rob

by: Wesley 07/08/2026

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: Todd MobileRVHelp 06/02/2026

2022 Chevrolet Trax

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: Chris 03/15/2019

2015 Subaru Outback Wagon

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!

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Chris One Year Later

3/16/2020

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.

2221

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

Do you have a question about this 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...
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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.
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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...
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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...
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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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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...
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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,...
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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...
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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...

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

Info for this part was:

Expert Research:

Mike L

Edited by:

Lindsey S

Updated by:

Wilson B

Updated by:

Isabelle B

Written by:

Mike S

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