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Roadmaster

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Part Number: RM-3177-1

2221 Reviews | 8 Questions

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$575.00

Retail:$632.50

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2011 GMC Sierra

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roadmaster tow bar base plate removable draw bars hitch pin attachment

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

roadmaster tow bar base plate hitch pin attachment rm-3177-1

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

roadmaster tow bar base plate partially hidden rm-3177-1

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SCHEDULE AN INSTALLATION

The crossbar-style hidden brackets attach to your vehicle's frame to provide attachment points for your tow bar. The visible portions of the brackets can be removed when you are not towing. Great Prices for the best tow bar base plate from Roadmaster. Roadmaster Crossbar-Style Base Plate Kit - Removable Arms part number RM-3177-1 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-3177-1

Highlights

Custom Fit for Your Vehicle: Mounts to existing attachment points
Ready for Flat Towing: Provides secure frame-mounted points to connect your tow bar for RV towing.
Blends In When Not Towing: Removable drawbars leave brackets nearly invisible for a clean look.
Built to Last: Computer-cut, all-steel construction with black powder coat resists corrosion and wear.
Simple Setup: Drawbars attach and remove quickly with two hitch pins—no welding required.
Reliable Fit: Custom base plates ensure precise alignment for smooth installation and towing.

Features to know about

Made for a Clean Front End: Hidden Brackets with Removable Arms

If you like a clean, factory look when you’re not towing, this setup keeps it that way. The crossbar-style hidden brackets mount to the frame and the drawbars are easily removable via two hitch pins. Once you pull the arms off, the remaining brackets are virtually invisible and tucked within the grille where they stay protected from scuffs or road debris.

Built Tough for the Long Haul: All-Steel, Computer-Cut Construction

This kit is made from computer-cut, all-steel components that give it exceptional strength for dependable towing over long distances. The black powder coat finish adds corrosion resistance and holds up to the elements. It’s a solid, heavy-duty design that inspires confidence mile after mile.

Simple Bolt-On Setup: No Welding Required

The installation is straightforward thanks to its bolt-on design—no welding needed. The kit comes with clear instructions and all mounting hardware, so you can get it installed and ready to tow without hunting for extra pieces.

Keep Your Gear Working Together: Compatible with Roadmaster Tow Bars

If you already use a Roadmaster tow bar, this base plate integrates right in with a quick-disconnect crossbar (910021-00, sold separately). The connection system uses standard hitch pins for secure attachment and easy removal, letting you hook up or disconnect quickly when hitting the road or setting up camp.

Specs

Features

Hidden bracket design: Drawbars are easily removable via 2 pins
Improved aesthetics: Compared with standard brackets
Computer-cut, all-steel construction: Provides exceptional strength
Black powder coat finish: Durable and corrosion resistant
Simple installation: No welding required
Custom base plates: Ensure a perfect fit for your vehicle
Compatibility: Compatible with Roadmaster tow bars with use of quick-disconnect crossbar (910021-00 - sold separately)
Instructions and mounting hardware: Included
Origin: Made in the USA
Warranty: Limited Lifetime Warranty

Design and Construction

Bracket Style: Crossbar-style hidden brackets
Material: All-steel construction
Finish: Black powder coat
Attachment Type: Hitch pin attachment
Removable Components: Draw bars removable via two pins
Visibility: Partially hidden when arms are removed

3177-1 Road Master XL Base Plate Kit

Installation Details RM-3177-1 Installation instructions

This Product Fits The Following Vehicles

2014 - 2018 GMC Sierra 1500
2019 - 2019 GMC Sierra 1500 Limited

4.8

2221 reviews

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

by: Daryl 02/22/2020

Excellent product,well built and service from etrailer is excellent.called order in as I had a few questions and Teresa J was excellent got order shipped in record time with parcel arriving as promised.

Daryl One Year Later

2/23/2021

Excellent product very good instructions and an easy install

by: Erick 05/28/2022

2016 GMC Sierra 1500

This is the third time I’ve ordered base plates for my pickups throughout the years. Still the best online retail service there is. Not just for trailering needs. I mean, overall, on the internet. Thanks.

by: Russell 06/02/2022 One Year Later

Harder to install than older versions. You need to remove most of the front of the vehicle to install them.

Russell One Year Later

6/3/2023

Works great. No issues. Only thing is if you get a short anywhere in the primary vehicle will cause the brakes to apply

Russell One Year Later

6/3/2023

They work great

by: DLM 12/02/2020

Great product and delivered on time.

Dlm One Year Later

12/3/2021

Working as expected.

by: Curtis 04/05/2020 One Year Later

Works great

by: Jerry 10/27/2017

great already installed

by: Robert 08/04/2023

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: 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: 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: 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: 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: 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: 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?

Base Plates for 2016 Chevy Silverado 1500
No, a ball mount will not work as a way to flat tow your 2016 Chevy Silverado, you will need to add base plates to your truck and then use a high/low adapter. I've linked the page below to your options to assist.
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Recommended Components Needed To Flat Tow 2015 GMC Sierra 1500 Behind Motorhome
First, yes you can flat-tow your 2015 Sierra 1500. When flat-towing any vehicle you need 5 items. You need base plates for the towed vehicle, a tow bar, safety cables, lighting for the towed vehicle, and most states now require a supplemental brake system. I'll make some recommendations that will work for you. The base plates I recommend the Roadmaster XL Base Plate Kit, part # RM-3177-1. This kit has removable arms that make these base plates almost invisible when not towing. The tow...
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How To Use Roadmaster Stowmaster 5000 Tow Bar On 2018 GMC Sierra 1500
The Roadmaster Stowmaster 5000 Tow Bar can be used on a 2018 GMC Sierra 1500 with the Roadmaster Crossbar-Style Base Plate Kit part # RM-3177-1. That said, you'll still need safety cables, wiring, and a braking system to complete your setup. I have attached these items below. Roadmaster 80" Coiled Safety Cables part # RM-653 Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 Demco Air Force One Supplemental Braking System part # DM26VR Roadmaster Automatic Battery...
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Flat Towing Wiring Harness and Accessories to Flat Tow 2014 GMC Sierra 1500
To wire your 2014 GMC Sierra 1500 so it's taillights operate in conjunction with those of the towing vehicle or Motorhome, you'll need a diode system like # RM-15267. The installation isn't too involved, as you can see in the install video I've linked for you. You'll also need a few other items to flat tow your truck. Assuming you have a Roadmaster tow bar, the # RM-3177-1 base plates would work fine for you. You'll also need some safety cables like # RM-643, a supplemental braking system...
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Parts Needed to Flat Tow a 2016 GMC Sierra 1500 with a 4 inch Lift Kit
It is possible to flat tow a 2016 GMC Sierra 1500 with a 4 inch lift kit behind your RV. You will need a tow bar, base plate kit, safety cable set, tow bar wiring, and a supplemental braking system. I looked up a copy of the owner's manual for a 2016 GMC Sierra 1500 and it stated that only 4WD versions can be flat towed. For a 2WD version you will need to use a Tow Dolly, like part # RM-2050-1. If you have a 2WD just let me know and I can help you get all of the appropriate parts. You...
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Roadmaster Baseplate Options For A 2018 GMC Sierra 1500
The StowMaster 5,000 only has a 5,000lb capacity so it will likely be overloaded by your 2018 GMC Sierra 1500 so I don't recommend using it. If you still choose to then you'll need a crossbar style baseplate like the # RM-3177-1 you were looking at. If you want to upgrade to a heavier duty tow bar, like the etrailer # e74ZR, then you can go with a direct-connect style baseplate like part # RM-3177-3.
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Recommended Base Plate Kit for a 2015 GMC Sierra 1500 with Roadmaster Tow Bar
For a base plate kit that will allow you to use the Roadmaster StowMaster Tow Bar part # RM-501 on your 2015 GMC Sierra 1500, I recommend using the Roadmaster XL Base Plate Kit part # RM-3177-1. In order to complete your flat towing setup you will also need safety cables, wiring harness, and a supplemental braking system. If you would like my recommendation for any of these items please let me know and I would be happy to do so.
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Which Blue Ox Base Plate Kit is a Fit for 2017 Chevy Silverado 1500
If you are looking for the correct Blue Ox base plate kit that does fit your 2017 Chevy Silverado 1500 Blue Ox doesn't currently have a fit. The # BX1710 is designed for the older generation where the front end is slightly different. Instead, I recommend using the Roadmaster base plate kit # RM-3177-1 and then if you are using a Blue Ox tow bar you will use adapter # RM-033. For a tow bar with safety cables we have the part # BX7380 which would work well. For lighting you can use the...
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Info for this part was:

Expert Research:

Mike L

Expert Research:

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Written by:

DeAnne T

Updated by:

Adele M

Updated by:

Wilson B

Updated by:

Mike S

Updated by:

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