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Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Item # RM-521440-4
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Our Price: $485.00
Base Plates

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Product Images

In Use/Installed

Customer Photos

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Product Expert Mike S

Is this right For you? Product Expert Mike S says:

Yes, if you:

  • Are a DIYer and want a simple install
  • Have a hitch-mounted or car-mounted tow bar from Roadmaster
  • Value the protection of a lifetime warranty

No, if you:

  • Own a tow bar that's not from Roadmaster and don’t want to have to buy an adapter separately
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-521440-4 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster Crossbar-Style Base Plate Kit - Removable Arms. Base Plates reviews from real customers.
  • All Info
  • Reviews (685)
  • Q & A (0)
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  • Why etrailer?

Roadmaster Base Plates - RM-521440-4

  • 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
  • Integrated mounting points let you easily attach an electrical connector plug or bracket (sold separately)
  • 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.



521440-4 Road Master EZ4 Base Plate Kit

Replaces 5211440-1B

Installation Details RM-521440-4 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms - RM-521440-4

Average Customer Rating:  4.8 out of 5 stars   (685 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:
Jeep

Easy to install the videos you have are a great help, 2012 Jeep Grand Cherokee



by:
2000 Jeep Grand Cherokee

I ordered this base plate to be installed on our 2020 Jeep Grand Cherokee Limited to allow it to be used with a Roadmaster Tow Bar that we purchased originally in early 2000 to tow our 2000 Jeep Grand Cherokee. Yes, 20 years later we are back into RVing and wanted to tow our 2020 Jeep behind our new Jayco Seneca Super-C motorhome. The only difference between 2000 and 2020 is the fact that we needed a brake activation system for our 2020 setup, something that wasn’t required in 2000. etrailer also sold us the Roadmaster Invisi Brake operating system which we had our local welding fabricator (also RV hitch installation expert) instal. Everything works perfectly and safely. Thank you etrailer!


Comments
Excellent! We have towed the Grand Cherokee with it for over 17,000 miles since installation, with no operational issues. From NW MT to west coast of WA, to Rockport, TX, to Duluth, MN and back in three separate trips.
Mike - 06/05/2022

by:

This was my 4th install for a dingy (with 4 wheel flat towing) in the last 20 years. This install is for a 2018 Jeep Grand Cherokee, Overland. The New ROADmaster 90* twist & lock removable base plates are REALY Awesome! So much much easier & faster than installing & removing locking pins! One picture shows a Brush guard from ROADmaster no longer available.



by:

Easy to install. Works as advertised. Starting to rust after only 1 year.



by:

The Base Plates are performing as expected, unfortunately chipping paint has plagued these Base Plates. This chipping paint has occurred along both of the leading edge of where the tow bar mounts. This has not been caused from abuse/misuse, it started happening soon after began using. Should not have happened so soon.



by:

Installation was straight forward. Online video was a great addition to the included instructions. Brackets have worked well and are easy to set up for towing



by:
Roadmaster

Just what I wanted. Roadmaster is the b est!



by:
Jeep Grand Cherokee

I ordered an RM -521440-4 base plate for my Jeep Grand Cherokee.
Talked with sales and they were very helpful and knew their products.
The price was good and it was delivered in a few days.
Good company to do business with.


Comments
Since the base plate install we have towed our Jeep to California and back without any issues. Good quality and easy to use.
Terry F - 04/06/2021

by:

Product installed easily hardest part was finding drill sharp enough to drill holes. Took about 4 hrs at a 75 year olds pace.
Looks nice and fit my existing tow bar with no problems. You may want to remind buyers they need a plastic pop rivet tool, not easy to find in local auto stores. I took advantage of my friend who owns a body shop, it took 2 minutes.


Comments
Still towing my car works great. Very satisfied only problem I had was my wife panicked when she saw front of car on lawn while I installed brackets.
Bill F - 10/19/2018


by:
2016 Jeep Grand Cherokee

Just received RoadMaster Baseplate Kit (-4), Falcon 2 Tow Bar, Diode Taillight Kit and the Wireless Braking Kit for my 2016 Jeep Grand Cherokee Summit. Arrived after only two days! All packages arrived in good shape!



by:
Jeep Grand Cherokee

One year ago I purchased the equipment to tow my Jeep Grand Cherokee 4 flat behind my motorhome from etrailer. I received the items within 4 days, and was able to do the install myself thanks to the fantastic instructional videos provided by etrailer.
I have towed it from Iowa to Colorado, and several shorter trips. It is easy to
hook up/unhook and tows fantastic. I went with the Roadmaster Sterling tow bar as well as the roadmaster crossbar with removable arms. I would HIGHLY recommend this setup! I also put the roadmaster diode wiring set in the Jeep to use the tail lights. Works flawless! I have used etrailer for several items and have always been completely satisfied. Preston was super helpful in helping me choose the best equipment for my application! Can't go wrong with etrailer!



by:

Great directions and videos



by:
2014 Jeep Grand Cherokee

This is an nice unit and the instruction included were spot on. It is very scary to rip the front end of your toad off to install a tow kit. But, nothing went wrong and the parts are great. Should be easy to remove and install when needed.

One improvement would be a better way to cut out the two grill parts for the tow extensions. I finally toss the originals and left open holes. It looks find. And bought new closures for the time that I decide to change the rig. If Road Master had produced a templant, I might have had something that I would have used. as it was, I screwed up the closure too much to use.


Comments
they work great. I changed to a 2018 Jeep Grand Cherokee and had the dealer switch over. Still work perfectly. Using them again in Oct.
Steve F - 08/15/2018


by:

Patrick was a pleasure to deal with.he verified the proper and required components,followed up getting them shipped quickly and free,no sales tax.highly recommend!!!!


Comments
Really good.thank you!!
Joe b - 01/28/2018


by:

Great service from etrailer. I had ordered and received the wrong part. I contacted etrailer and they verified the correct part I needed and shipped it right out.



by:
2012 Jeep Grand Cherokee

The base plate fit fitment is great. However, due to 2012 Jeep Grand Cherokee Summit manufacturing tolerances, there was a little shimming required on driver side radiator support bolt up on my installation (1/8" flat washer was used). Other then that, installation was a breeze.



by:

Etrailer is always good to work with.



by:
2014 Jeep Grand Cherokee

The products purchased were to allow me to tow my new Jeep Grand Cherokee behind my motorhome. Actually I had purchased a similar setup from you Five years earlier for my 2014 Jeep Cherokee Trailhawk. Both worked as advertised and I was very satisfied.






by:

Delivery was fast. Install went well and was easily completed. Quality products.



by:
2014 Jeep Grand Cherokee

PRETTY STRAIGHT FORWARD INSTALL!



by:
2020 Jeep Grand Cherokee

Just finished installing this base plate on our 2020 Jeep Grand Cherokee. The install went smoothly with the help of all the etrailer videos. Every thing fit and all the parts were there. Thanks etrailer



by:

Tim M was great to work with, parts came very fast and installation was easy with the instructions that came with it. Will be going back to etrailer again for my towing needs. The salesman was very helpful when it came to knowing the products.



by:

Thanks for the quick delivery. The base plates mounted exactly as per the instructions given. Real easy.
The next time I need new base plates for a different vehicle I'll make sure to contact you.

Thanks again.



by:
2017 Jeep Cherokee

Perfect fit for my 2017 Jeep Cherokee



by:
2017 Jeep Grand Cherokee

Quality made! Great installation instructions and ETrailer video. Can't go wrong.


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Ask the Experts about this Roadmaster Base Plates



  • What is Included in the Replacement Hardware Kit for Roadmaster EZ4 Base Plate Kit
    The Replacement Hardware for Roadmaster EZ4 Base Plate Kit # RM-521440-4HK includes the mounting hardware for the Roadmaster Crossbar-Style Base Plate Kit # RM-521440-4. I have included a picture of what this includes for you to check out.
    view full answer...
    Image 1 for
  • Roadmaster Base Plate Compatibility with Tracker Tow Bar for 2014 Jeep Grand Cherokee
    The Roadmaster Tracker Tow Bar, part # RM-020 isn't compatible with a direct connect tow bar like the # RM-521440-5 you had looked at. You'd instead need to use a crossbar style base plate kit like # RM-521440-4. In addition to the base plates and tow bar, you'll also need a wiring solution, safety cables, and a supplemental braking system. I've linked to an FAQ article that lists suggested packages for flat towing your 2014 Jeep Grand Cherokee. I've also linked to an install video for...
    view full answer...
  • Does Flat Towing a 2017 Jeep Grand Cherokee Add Miles to the Odometer?
    Flat towing a 2017 Jeep Grand Cherokee will not add miles to the odometer of your Jeep. It will however still create wear on your tires for instance so it is a good idea to track the mileage towed for maintenance reasons. Most modern vehicles will only track miles on the odometer when they are running and utilizing their transmission. If you are interested in recommendations for a complete system for your vehicle, let me know and I'd be happy to help with that or any other questions you have.
    view full answer...
  • Will Roadmaster Base Plate Kit # RM-521440-4 Fit Diesel Model of 2014 Jeep Grand Cherokee
    Yes, the Roadmaster Crossbar-Style Base Plate Kit # RM-521440-4 that you referenced will fit the Diesel model of your 2014 Jeep Grand Cherokee as long as it isn't the SRT-8. I verified this with Roadmaster. I have attached an installation video and the complete instructions manual that you can check out as well. To complete your flat tow setup you will also need a tow bar, safety cables, a lighting solution, and a supplemental braking system. Please just let me know if you need some or...
    view full answer...
  • Differences Between EZ4 and EZ5 Base Plate Kits for 2011 Jeep Grand Cherokee Overland
    For your 2011 (or 2012) Jeep Grand Cherokee there are two base plate options. You have the EZ4 kit part # RM-521440-4 and the EZ5 part # RM-521440-5. There isn't a standard EZ kit that's a fit. The primary difference between the two designs is the way they attach to the tow bar. The EZ5 does not use the quick-connect crossbar which provides a cleaner look, but prevents you from using some accessories that mount to the crossbar such as a Rock Guard like the Roadmaster # RM-4000. If you...
    view full answer...
  • Roadmaster Base Plate Kit Recommendation 2013 Jeep Grand Cherokee to Use Nighthawk Tow Bar
    The base plate kit part # RM-521440-4 does not come with a crossbar as it's the tow bar that would include this component. Since you are wanting to use the Nighthawk tow bar part # RM-676 you'd instead want the direct connect base plate from Roadmaster that fits your vehicle part # RM-521440-5 which attaches directly to the Nighthawk. I attached an install video for the base plate kit on a similar 2019 Grand Cherokee as well.
    view full answer...
  • Roadmaster Crossbar Style Base Plates Product Comparison With Roadmaster Direct Connect Base Plates
    The Roadmaster Direct-Connect Base Plate Kit - Removable Arms Item # RM-521440-5 and Roadmaster Crossbar-Style Base Plate Kit - Removable Arms Item # RM-521440-4 are the same base plate but with different attachment arms. Since you're using a Roadmaster BlackHawk 2 All Terrain, Non-Binding Tow Bar - Motorhome Mount - 2" Hitch - 10K Item # RM-422 you can use either base plate with no adapters needed.
    view full answer...
  • Can Roadmaster Crossbar Style Base Plates for a 2011 Jeep Grand Cherokee Be Purchased Without Arms
    I do have an option for you but base plate kits are offered as complete units only. That said, this would be a great time to upgrade to the direct connect style which does not require the bulky crossbar. The Roadmaster Direct-Connect Base Plate Kit part # RM-521440-5 will be a great option for you and will work well with the Roadmaster BlackHawk 2 All Terrain Tow Bar part # RM-422.
    view full answer...
  • Base Plate Kit for 2017 Jeep Grand Cherokee for Use with Roadmaster Sterling Tow Bar
    The Roadmaster Sterling tow bar part # RM-576 requires the use of Direct Connect base plate kits so for your 2017 Jeep Grand Cherokee the Roadmaster base plate you'd need is the # RM-521440-5 instead as the kit you mentioned requires a crossbar.
    view full answer...
  • Compatibility of Roadmaster 5211440-1B with 2020 Jeep Grand Cherokee
    Yes. The part number you referenced is basically the # RM-521440-4 which is compatible with 2020 Jeep Grand Cherokee Limited. That part number replaced the 5211440-1B so the fit is identical. If you had the SRT-8 or Trackhawk model it would not be compatible but the limited is a fit.
    view full answer...
  • Base Plate Kit Recommendation for 2017 Jeep Grand Cherokee
    You will have to install a new base plate kit on your 2017 Jeep Grand Cherokee as the kit you have installed on your 2015 Jeep Patriot would not fit your new Jeep. For that you would need the # RM-521440-4. Aside from that the rest of your flat towing setup would work just fine.
    view full answer...
  • Can Blue Ox Tow Bar Flat Tow Vehicle with Roadmaster Base Plate Kit
    The Blue Ox tow bars can be used with Roadmaster base plate kits as long as you use the correct adapter # RM-032. For your 2016 Jeep Grand Cherokee the correct base plate kit is the part # RM-521440-4 which I attached an install video as well.
    view full answer...
  • Is Additional Safety Cable Needed When Installing Roadmaster EZ Hook Up to EZ4 Base Plate Kit
    The EZ4 base plate kit you have installed on your 2012 Jeep Grand Cherokee part # RM-521440-4 has safety chain tabs that are on the portion of the kit that attach directly to the vehicle frame. Since this base plate kit did not come with a short safety chain cable like some of the kits do you would not need an additional length of cable.
    view full answer...
  • Old Roadmaster StowMaster 5000 Compatibility with 2020 Jeep Grand Cherokee Limited Base Plates
    The Roadmaster StowMaster 5000 to the Roadmaster StowMaster Tow Bar - Car Mount - 2" Ball - 6,000 lbs # RM-501 base plate connection dimensions have not changed. The Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521440-4 is a confirmed fit for your 2020 Jeep Grand Cherokee Limited as you stated and will work very well with your older StowMaster tow bar. It sounds like you have other parts, so let me know if you need anything else to complete your system.
    view full answer...
  • Roadmaster StowMaster Tow Bar & 2015 Jeep Grand Cherokee
    What I think you are asking about is the Roadmaster StowMaster Tow Bar, # RM-501 which is not a vehicle specific tow bar. To put the used item that you reference to use on your 2015 Jeep Grand Cherokee you will still need to install base plates on your vehicle to be towed. I recommend the Roadmaster Crossbar-Style Base Plate Kit, # RM-521440-4.
    view full answer...
  • Recommended Base Plate Kit to Flat Tow a 2014 Jeep Grand Cherokee Overland
    Since you already have a Falcon tow bar I recommend going with Roadmaster base plates. You're correct that the old ones from your 2000 Jeep aren't going to fit. Both the EZ4 # RM-521440-4 and EZ5 # RM-521440-5 kits will work on your 2014 Jeep Grand Cherokee Overland. The biggest difference between the two is that the EZ5 doesn't need the Falcon's crossbar when you hook up. If you also need wiring for the Jeep's lights and a braking system I recommend the diode kit for the lights, part...
    view full answer...
  • Which Base Plates Are Needed to Use Roadmaster StowMaster 502 on 2016 Jeep Grand Cherokee
    If you're wanting to use the Roadmaster StowMaster Tow Bar - Car Mount - 2-5/16" Ball - 6,000 lbs # RM-504 on your 2016 Jeep Grand Cherokee you'll need compatible base plates like the Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521440-4. If you just need the quick disconnects then you'll need the Roadmaster Tow Bar Quick Disconnects - Car Side Only # RM-222. If you need any other components to complete your flat towing setup for your 2016 Jeep Grand Cherokee I've linked...
    view full answer...
  • What Roadmaster Base Plate Kit Is Needed For 2019 Jeep Grand Cherokee When Using StowMaster Tow Bar
    Yes, the Roadmaster Crossbar-Style Base Plate Kit, # RM-521440-4 is the correct base plate for your 2019 Jeep Grand Cherokee if you are wanting to use the Roadmaster StowMaster Tow Bar, # RM-501. Please note the linked product review and installation video below.
    view full answer...
  • What Vehicles Does Roadmaster Base Plate Kit # RM-521440-4 Fit
    The Roadmaster base plate kit part # RM-521440-4 fits the following: 2011 - 2013 Dodge Durango All Wheel Drive - with Adaptive Cruise Control 2011 - 2017 Jeep Grand Cherokee excluding SRT-8 2018 - 2021 Jeep Grand Cherokee excluding SRT-8 and Trackhawk
    view full answer...
  • What Do I Need To Flat-Tow A 2011 Dodge Durango.
    Yes a 2011 Dodge Durango can be flat-towed. My research shows the 3.6L V6 and 5.7L V8 Hemi Durango models are capable of being towed only if they have a 2-speed transfer case. You will need to check your owners manual to find out what type of transfer case you have. That said, you will need Roadmaster Direct-Connect Base Plate Kit - Removable Arms # RM-521440-5 (if you have adaptive cruise control). Or Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521440-4 (If you do...
    view full answer...
  • Parts Needed to Flat Tow 2015 Jeep Grand Cherokee Compatible with Roadmaster Falcon 2 Tow Bar
    The base plates for your 2015 Jeep Grand Cherokee that are compatible with the Roadmaster Falcon 2 Tow Bar # RM-520 are the Roadmaster EZ4 Base Plate Kit with Removable Arms # RM-521440-4 or the EZ5 Base Plate Kit with Removable Arms # RM-521440-5. I have attached an installation video of these for you. To have them installed, you will want to contact a local auto shop. Other components needed to flat tow your Grand Cherokee are towed vehicle wiring, a supplemental braking system, and...
    view full answer...
  • Parts Needed to Flat Tow 2018 Jeep Wrangler JL
    Flat towing components can end up pretty expensive but we do have everything you'd need to flat tow your 2018 Jeep Wrangler JL. The first thing you need is a base plate kit like the # RM-521453-4 which is a confirmed fit and has removable arms for when not in use. 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 All Terrain, # RM-522. This...
    view full answer...
  • Parts Needed to Flat Tow a 2015 Grand Cherokee 4x4
    At the very least you would need a new base plate kit like part # RM-521440-4 for if you have any model aside from a Summit or a SRT-8 or part # 521440-1B for if you have a Summit. I attached an install video for you to check out. You may also need new lighting depending on what you used with the Rubicon. For lighting you can use the diode kit, # RM-15267, and not have to worry about cutting into the taillight housing. This will splice into your taillight wiring to allow your tow vehicle...
    view full answer...
  • Parts Needed to Flat Tow a 2014 Jeep Grand Cherokee Summit with a Roadmaster Sterling Tow Bar
    I'm not familiar with a Cherokee Summit so I think you mean you have a 2014 Jeep Grand Cherokee Summit. If I'm wrong about this let me know. But I'll give you parts for both. Both Roadmaster EZ4 # RM-521440-4 and EZ5 # RM-521440-5 base plate kits that fit the Grand Cherokee will work with the Sterling tow bar. The same with the Cherokee except use EZ4 # RM-521447-4 or EZ5 # RM-521447-5. For either Jeep the Sterling tow bar safety cables will not work with the EZ5 kits. If you need...
    view full answer...


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