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  1. Tow Bar Base Plate
  2. Roadmaster
  3. Removable Draw Bars
  4. Hitch Pin 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-3177-1
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.
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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  • Reviews (2209)
  • Q & A (0)
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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




Ratings & Reviews

4.8

2209 reviews
5 Stars
(1862)
4 Stars
(261)
3 Stars
(48)
2 Stars
(13)
1 Star
(25)
Review sort icon
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.

by:

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.



by:

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.



by:

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:

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.



by:

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:

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:

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!



by:

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.



by:

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.



by:

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.



by:

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:

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.



by:

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.



by:

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.



by:

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.



by:

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



by:



by:

great already installed



by:

Works great



by:

Great product and delivered on time.

Dlm profile picture

Dlm

12/3/2021

Working as expected.



by:

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

Russell profile picture

Russell

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 profile picture

Russell

6/3/2023

They work great



by:

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:

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 profile picture

Daryl

2/23/2021

Excellent product very good instructions and an easy install


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See what our Experts say about this Roadmaster 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.
    view full answer...
  • 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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  • 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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  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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.
    view full answer...
  • 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.
    view full answer...
  • 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...
    view full answer...

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


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee DeAnne T
Written by:
DeAnne T
Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Isabelle B
Updated by:
Isabelle B

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