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Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Item # RM-521448-4
Retail:$550.00
Our Price: $485.00
You Save: $65.00
Base Plates

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Shipping Weight: 45 lbs
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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-521448-4 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Crossbar-Style Base Plate Kit - Removable Arms. Base Plates reviews from real customers.
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Roadmaster Base Plates - RM-521448-4

  • 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.



521448-4 Road Master EZ4 Base Plate Kit

Replaces 1432-1

Installation Details RM-521448-4 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms - RM-521448-4

Average Customer Rating:  4.8 out of 5 stars   (876 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:
2014 Jeep Wrangler

Great product for my 2014 Wrangler. Good materials, solid attachment to vehicle, and looks good. The e trailer installation video was great for assisting installation. Made the install much quicker and easier. The most difficult procedure for me was disconnecting the wiring harness on the back of the bumper. An old tack puller (or tool of similar design) would have been great for leveraging the pins out of their holes. Cutting the air dam was a slow process to ensure I didn't cut too much. A paper template to mark where to cut the air dam would make this process much simpler. Again, I can't emphasize enough how great the installation video was for making the steps easier.

Bob T.

4/20/2015

This item works great. Have towed about 4500 miles using it. I couldnt be happier with the results.



by:
Roadmaster

etrailer service was great. Received my Roadmaster base plate in 3 days. The directions from Roadmaster were fair, but etrailer's video was excellent. I had trouble mounting my base plate as the space between the two baseplate ends were too tight. I needed to use a floor jack and bottle jack to get it on. Once it was in position everything went together fine. I trimmed the Jeep' air dam differently keeping the ends that Roadmaster wants you to cut off. I think it looks better. I also had to modify the center cut in the air dam to accommodate the breakaway switch I have.

Jeffrey

10/29/2018

Base plate has been working out great. Easy putting on and taking off.



by:
2014 Jeep Wrangler

Bought this product from etrailer with free shipping it was cheaper than I could get in town.. The baseplates are perfect for our 2014 Jeep Wrangler and our stowmaster 5000 tow bar. The unit is built to last with heavy steel plate and nice welds. Installation is pretty easy, you just have to remove the plastic air dam, and trim it up. Etrailer has a great video going over the install. I am pretty picky, and I didn't care for the way Roadmaster has you cut the air dam. If you take your time and look at photos of the way they cut it when you have your air dam off you can make it look much better. I have enclosed pictures of my install so you can see the difference. I am very happy with the ez-4 baseplates and etrailer



by:
Jeep Wrangler

I purchased this EZ4 base plate to work in conjunction with the Falcon2 tow bar. It fit perfectly on my Wrangler Unlimited, and is tucked mostly out of site when not used. The two baseplate arms bolted to the cross bar of the Falcon2 are easily removed and stored away when not in use. Installation because of the weight and tight fit to the Wrangler frame, was found to be much easier with two people.



by:

Installed this baseplate on my 2016 Jeep Wrangler Sport unlimited for use with the Roadmaster StowMaster tow bar. After some confusion as to which baseplate (RM-521448-5 or the -4) to order, I finally got all of the components and have the vehicle “tow ready”. Baseplate install is simple, but make you you measure for the cut-out in the rubber rock plate. Directions say the cut-outs should be 9” long...make them 6”.
I also ordered and installed the Hopkins 56200 light kit which is a very easy install except for routing the wiring to the front. If you can get the vehicle on a lift it would be much easier. All together it took me about 5.5 hrs to complete the install and I did it all alone (65 years old). A younger person could probably cut an hour to 90 minutes off my time.



by:
2015 Jeep Wrangler Unlimited

Installed on a 2015 Wrangler JKU.
Overall
was an easy install with just one minor difficulty. The minor issue I had was with the 1/2” Tab Weldnut with rod (item # 16 in parts Diagram). This weld nut goes into a section of the Jeep frame that is boxed in and limited access to it hence the rod attached to it used for placement! This weld nut wanted to turn while tightening and was a little difficult to get it to tighten. It’s not designed for a wrench but I was able to get a 3/4 in open end wrench on the plate part of it and hold it for tightening. I think the intent in design is that it will turn up against the wall of frame and hold it from turning. It’s about 3/4 to short to contact the frame. This is a minor problem when installing the bottom side plate bolt on each side.
The baseplate fit very nicely and all holes lined up perfectly. Very well constructed and finished.
I trimmed the rock guard a little at a time to fit and can say that the instructions are good but say to remove a little more than needed on the depth. Take your time and trim a little at a time and trial fit it each time.
Very happy with product!



by:
2010 Jeep Wrangler

I'm giving it 4 stars instead of 5 only because of documentation. Need a video for the E4 bracket installation on a 2010 Jeep Wrangler. I did it all ... a diode wiring kit ... the tow bar and bracket installation ... and converted the Motorhome from a separate to a combined wiring system while adding a charge wire ... it took me two days. Very happy with the quality of the tow bar and bracket.



by:

Great product...Good fit and appearence. The installation instructions were FAIR at best. There are alot of missing steps in the instruction sheet, so if you are not talented with tools let a professional tackle this job. Also if you are going to install these brackets yourself, I suggest that you raise the vehicle up on jack-stands or up on a lift. I did this install while all 4 tires were on the floor and it was very difficult to reach some of the bolts in order to tighten them. The most difficult part of this install is placing the front bumper back to it's original position. It can be done, but it is best to have a helper...you will have to apply some force!!

Take your time and test fit everything, hope this helps.
Ken



by:
2016 Jeep Wrangler

The processes ordering, packaging, shipping, were all completed without problems. The -4 baseplate kit for my 2016 jeep wrangler fit as advertised and connected to my road master 10,000 lb tow bar without a problem. Thanks, Ron C.



by:

Easy to install and looks good when mounts are on or off. There are some very small rust spots from where the coating has worn off but great product.

Justin

10/12/2023

Had an issue you can read more in review of stow and go tow bar. This product is fine but throw out the junk pins they supply and install something like a padlock to secure your tow bar to these base plates. When a pin comes out it will be an expensive day for you.

Etrailer Expert

Mike L.

11/4/2023

@Justin There's a very specific way the linch pins need to be installed. The instructions I've linked show this on page # 2.


by:

Installed Perfectly



by:

The Roadmaster base plate kit is well made and fit the Jeep JK very well. The assembly instructions were detailed and accurate with the exception of how to cut the plastic splash/rock guard under the bumper. I questioned the dimensions provided and checked prior to cutting. I was able remove less material resulting in a better fit.

The threaded plates with wire attached are not long enough to prevent spinning when torqueing the bolts attaching the bracket to the vehicle frame. I was able to use a 7/8 open end wrench to hold the plates while torqueing the bolts. A little frustrating but as there isn't much room to access the upper plate. Roadmaster should consider manufacturing those plates longer to prevent spinning.

The customer service from Etrailer was excellent. Tammie expedited my order and provided notification when shipped and delivered. Tammie is a 5 star representative and I appreciate her attention to my order.

I recommend Roadmaster products and Etrailer.

Joe R.

9/15/2021

Still very satisfied with the roadmaster product.



by:
Jeep Wrangler

The order was quickly and accurately filled, shipped, and tracked to final and quick delivery.
Part was a perfect fit and a simple install.
This was the EZ4 baseplate for a stowaway tow bar mounting to a Jeep Wrangler JKU. I am impressed with the Roadmaster last be of tow equipment, as it shows that they have gone the extra mile in making their parts fit and make a strong and safe connection between the motor home and towed vehicle

Kenneth

7/26/2021

Great. I sold the Jeep but when towing it, I felt very secure and my least worry would be a towing problem. Will buy again



by:

Excellent product. Excellent service. Excellent installation instructions. A value product.
Other than that, I guess it's OK



by:

Nice baseplate kit. Only problem is some of the holes didnt match up with the frame crossmember so additional holes had to be drilled . Nothing in the instructions referenced this. Also no mention of the Airconditioner lines that had to be move to place the top bolt thru the frame rails or that to drill the hole in the frame you have to raise the evap core or as an alternative measure and locate where the hole should be then drill from the blind side.

Etrailer Expert

Sierra K.

2/8/2021

Thank you for your review. Referencing step 2 of the instructions it does say that due to manufacturing variances, the hole in the outside of the frame rail may not exist so some drilling may be required. As for the air conditioning lines and evap core, it sounds like your jeep has been slightly modified.



by:
2016 Jeep Wrangler

One of the best towing packages there is



by:

fitmenr was perfect



by:
2011 Jeep Wrangler Unlimited

very easy to install by myself in about an hour. all holes were already in the frame except for the 2 for the front lower cross bar. mine is a 2011 jeep other years may have them. Easy to drill had plenty of access room and easy to get to. looks good after install , sets back just far enough to hide most of it. very clean not sure i'm going to leave the the front splash shield on looks good with out it.

Don B.

10/1/2021

Working well no issues



by:
Jeep

This base plate bracket met my expectations in every way. Fits out of the way behind the bumper attached to the frame on my Jeep Unlimited. Well made and would recommend for anyone.

Martin S.

1/25/2017

Pulled my Jeep 10000 miles behind our motorhome last year and baseplate doing its job. Thanks, etrailer!



by:
2017 Jeep Wrangler

Delivery was excellent and extremely quick. Arrived in great shape within a couple of days after order and I ordered it late in the day. The website video was great because it showed exactly what was involved and how to do it. I asked questions and got prompt answers. Have not installed yet but after I do will share pictures of installation of unit on 2017 Jeep Wrangler Unlimited. This is the third unit I have ordered from these fine people, all with excellent results. If need be will order future needs from them.

John M.

4/20/2020

Worked great and looks good. Hardly notice it’s there when not using.



by:

easy to install, fit well.



by:

Good quality. A little difficult to install for one person. Another set of hands would make it easier. Follow the instructions to make sure that you do things in the proper order. I would buy this again.

Dale

3/17/2022

Still working as designed. Thanks



by:

The brackets arrived quicker than the date scheduled. They were taken out of the box to verify all the parts were accounted for and they were.

Mike B.

3/4/2015

I have used it a bunch with no issues.It still meets my expectations. Thanks



by:

Easy install to a point! Those wire nut attachments are necessary but don't hold good but I got it!

Great service and shipping from etrailer. Always a pleasure dealing with them.

Dave B.

6/6/2017

Works great easy install

Dave B.

6/6/2017

Works great easy install



by:
2011 Jeep Wrangler

The tow brackets were installed on a 2011 Jeep Wrangler Unlimited. Brackets are well made and the fit was excellant. The installation takes some time as you have to remove and reinstall the bumper and drill some 1/2" holes to get the Brackets mounted. The average homeowner who is a little mechanically inclined will have no problem. The only improvement that we see is with the instructions. Could of supplied a Template for cutting the plastic splash shield under the bumper. If you take you time with measuring the cuts the fit will be excellant.


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Show More Reviews

See what our Experts say about this Roadmaster Base Plates

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    Since base plate kits are only rated and tested for pulling the vehicle itself, in your case your 2017 Jeep Wrangler, it is not safe to use it for towing - especially when it has to be modified. You will want to install a rear mounted trailer hitch receiver, like the Curt # 13432, if you are wanting to tow something as well as have a base plate kit installed. Because a base plate kit and a front mount hitch will mount in the same spot it is not possible to use both at the same time. You...
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  • Can a 2016 Jeep Wrangler Sport Be Flat-Towed
    Yes, the 2016 Jeep Wrangler Sport can be flat-towed with all four wheels on the ground. In order to do so you will need a number of components which I have attached for you below. Roadmaster Crossbar-Style Base Plate Kit part # RM-521448-4 Roadmaster Falcon All Terrain Tow Bar part # RM-522 RoadMaster 68" Single Hook, Coiled Safety Cables part # RM-643 Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56200 Stay-IN-Play DUO Supplemental Braking System part # SM99251 (Motorhome...
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  • Parts Needed to Flat Tow 2016 Jeep Wrangler Black Bear Behind an RV with Stowmaster Tow Bar
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  • Complete Flat Tow Package for 2015 Jeep Wrangler and Local Install
    Yes we do maintain a list of installers. Please note the link at the bottom of this page or look on any product page below the listed videos for "Locate installers near me". For a flat towing setup on a 2015 Jeep Wrangler with a standard factory bumper, you will need five main components consisting of base plates, a tow bar, safety cables, towbar wiring, and a supplemental braking system. I suggest the following: - Base Plate Kit - Roadmaster, # RM-521448-4 - Tow Bar - Roadmaster Falcon...
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  • 2004 Jeep TJ Base Plate Kit Recommendation
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  • What Base Plates Work with Roadmaster Tow Bar # RM-501
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  • Recommended Baseplate For Flat Towing A 2010 Jeep Wrangler With A Roadmaster StowMaster Tow Bar
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  • Does Roadmaster Base Plate For 2016 Jeep Wrangler Work With Reese Tow Bar
    There is an adapter available that will allow you to use your Reese tow bar with Roadmaster base plates for your 2016 Jeep Wrangler, but the adapter won't work with the Direct Connect # RM-521448-5. So instead, what you will need is the following: - Roadmaster Crossbar-Style Base Plate Kit # RM-521448-4 - Roadmaster Base Plate to Tow Ready Tow Bar Adapter # RM-025 - Replacement Roadmaster Tow Bar Quick Disconnect Kit # RM-201 This is the set up needed, as the base plates will fit your...
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  • Can Blue Ox Rangefinder II Tow Bar Be Used to Flat Tow a 2016 Jeep Wrangler
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  • Parts Needed to Flat Tow 2016 Jeep Wrangler Rubicon with Factory Bumper
    If the 2016 Rubicon has the factory bumper the correct Roadmaster base plate kit is the part # RM-521448-4. 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 2, # RM-520. For safety cables you can use # RM-643. The coiled design helps keep the cables off of the ground. For lighting you can use the diode kit, # RM-15267, and not have to worry...
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  • Can The Arms On The Roadmaster Crossbar-Style Base Plate Kit Be Replaced With Direct Connect Arms
    I confirmed with Roadmaster that you will be able to replace the arms of your Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521448-4 with the arms of the Roadmaster Direct-Connect Base Plate Kit - Removable Arms # RM-521448-5. You'll need to fill out the form located on the # RM-ARMS page listed as "Installation Details" and send it into Roadmaster. The arms you're wanting to order are the C002383. As for the tow bar I recommend the Roadmaster Falcon All Terrain, Non-Binding...
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  • Roadmaster Crossbar-Style Base Plate Compatible with 2018 Jeep Wrangler JK
    We do have the correct baseplate kit but the Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # 1430-1 is not a fit for your 2018 Jeep Wrangler. You instead will want the Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521448-4. This is a fit for standard factory bumper applications and is not compatible with the Hard Rock, Winter or 75th Anniversary models. This is a fit for the JK versions. I confirmed this with Roadmaster.
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  • Difference Between Roadmaster EZ4 and EZ5 Base Plates for 2017 Jeep Wrangler Unlimited
    Both the Roadmaster EZ4 Base Plate Kit # RM-521448-4 and EZ5 Base Plate Kit # RM-521448-5 will fit on your 2017 Jeep Wrangler Unlimited. 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 are at all interested in using a rock guard or protective...
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  • Fitting the Roadmaster Tow Bar Adapter # RM-032 to Roadmaster Base Plate Kit 1432-1
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  • Are Roadmaster Base Plates Compatible with 2015 Jeep Wrangler Unlimited 10th Anniversary Rubicon
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  • Parts Needed to Flat Tow 2014 Jeep Wrangler Sport Unlimited
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  • Demco Commander Tow Bar Compatible with Roadmaster DirectConnect Base Plate On 2018 Jeep JK Wrangler
    Yes, the older Demco Commander tow bar 951010 (replaced by Commander II part # DM9511012) can be used with the Roadmaster Direct-Connect Base Plate Kit - Removable Arms part # RM-521448-5 with the Demco adapter part # DM9523032. If you have the Roadmaster Crossbar-Style Base Plate Kit part # RM-521448-4 you will need the adapter part # DM9523001. If you do not already have the Roadmaster base plate on the Jeep, you can use a Demco base plate without an adapter with the Commander tow bar....
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  • Does Roadmaster Base Plate Install on 2017 Jeep Wrangler Unlimited Require Modification
    I checked the install instructions for the Roadmaster base plate kit # RM-521448-4 which is a fit for your 2017 Jeep Wrangler Unlimited and like you said the only permanent modifications needed is the trimming of the rock guard like in the picture I attached. If you are okay with replacing that once you remove the base plate kit the place you leased the vehicle from wouldn't be able to tell you had a base plate kit installed at all. I also attached an install video for this kit on a similar...
    view full answer...
    Image 1 for
  • Parts Needed to Flat Tow 2016 Jeep Wrangler Unlimited Behind an RV Using Duncan Towmatic II Tow Bar
    Adapter # RM-038 is designed to work with a Duncan Towmatic II tow bar so that you can use the tow bar with Roadmaster base plates. For base plates that are compatible with the tow bar, if your 2016 Jeep Wrangler Unlimited has the factory bumper use # RM-521448-4. For a Warn Elite bumper use # 1439-1 For a Rubicon Hard Rock Edition use # 1444-1 You will also need quick disconnects # RM-201 to be able to use the adapter with the tow bar and still have the base plate arms be easily removable. Next...
    view full answer...
  • Parts Needed to Flat Tow a 2014 Jeep Wrangler Unlimited
    You are on the right track. The Roadmaster Blackhawk part # RM-422 would do a great job flat towing your 2014 Jeep Wrangler Unlimited. For a base plate kit to attach the tow bar to you would need the # RM-521448-4. For safety cables you can use # RM-643. The coiled design helps keep the cables off of the ground. 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...
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  • What Is Needed To Flat Tow A 2017 Jeep Wrangler 4WD Sport
    Absolutely! First you will need a Base-Plate Kit and Tow Bar. I recommend the Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521448-4 which is confirmed to fit your 2017 Jeep Wrangler as long as it is not a Winter, Hard Rock, or 75th Anniversary model. For a Tow Bar I recommend the Roadmaster Falcon All Terrain # RM-522 which is a great system that has a non-binding design that allows you to release your vehicle at any time even on uneven ground. Next you will need a wiring...
    view full answer...


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Do you have a question about this Base Plate?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Laura H
Written by:
Laura H
Employee Cole B
Installed by:
Cole B
Employee Randy B
Test Fit:
Randy B
Employee Brent H
Test Fit:
Brent H
Employee Shane H
Test Fit:
Shane H
Employee Robert C
Test Fit:
Robert C
Employee David F
Test Fit:
David F
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Isabelle B
Updated by:
Isabelle B
Employee Zach D
Video by:
Zach D
Employee Jonathan Y
Video by:
Jonathan Y
Employee Michael B
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