Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Item # RM-521423-4

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Retail:$449.00

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RM-521423-4 - Twist Lock Attachment Roadmaster Base Plates
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Customer Photos


  • Roadmaster
  • Removable Draw Bars
  • 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. Call 800-298-8924 to order Roadmaster base plates part number RM-521423-4 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 (336)
  • Q & A (22)
  • Photos
  • Why etrailer?

Roadmaster Base Plates - RM-521423-4

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 Quick Disconnects and all Roadmaster tow bars
  • Instructions and mounting hardware included
  • Made in the USA


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.



521423-4 Road Master EZ4 Base Plate Kit

Replaces 521423-1



RM-521423-4 Installation InstructionsInstallation Details RM-521423-4 Installation instructions

This Product Fits The Following Vehicles

2002 - 2007 Jeep Liberty without brush guard





Customer Reviews

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms - RM-521423-4

Average Customer Rating:  4.8 out of 5 stars   (336 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.

- RM-521423-4
by:
2005 Jeep Liberty

Very Happy! The shipping was fast; 3 days, including Thanks Giving. I was able to instal the base plat myself, just following the installation video on their web site. I watched it a couple of times while I was waiting for delivery, and then followed it step by step during installation. I wouldn't have dared attempt it myself without the video. I also installed the Tail Light Wiring Kit with Bulbs-RM-155 using the same method. Everything went without a problem. I will be buying from eTrailer again. 588968



- RM-521423-4
by:

Easy instillation have used product a lot with no proplems 571767



- RM-521423-4
by:
2005 Jeep Liberty

Very pleased in the condition of our packages when they arrived and how timely they arrived. 548136



- RM-521423-4
by:
2006 Jeep Liberty

Exactly what I needed when I really didn’t know what I needed. Erica was the rep that helped me get the right parts I needed for my Jeep. Thanks Erica. 490257


Comments

Works like a charm. We have had no problems with the plates. Very pleased with the product. Well worth the money.

Richard - 03/28/2019

51129

- RM-521423-4
by:
2003 Jeep Liberty

Went in Smoothy 400360



- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


All was delivered and I have installed it. Only thing wrong with the RM-521448-4 Roadmaster Crossbar-Style base plate kit was that one of the 1-*1/2" x 3"threaded backing plate would not tighten down. Had to toss it and put in heavy duty washer and Nut and tighten it down. Otherwise great product and easy to install. 658514



- RM-521567-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


I received the RM-521567-4 very quickly with free shipping. I watched the Base Plate Kit video several times before I started the install. I Drove my CR-V upon a set of ramps and started tearing the front end off. Actually it was easier than I thought after watching and listing to the video. The only hard part was drilling the 1/2 inch hole in the sub-frame of the car. I did not have to trim the vertical frame bolts off as shown in the video in my 2013 CR-V. It took me 5 hours to install the Kit on my Honda. I have installed the base plate kit on my 2 previous TOADS, but I think If you can use a few tools this is not a very difficult job. Watch the video for taking the fascia and grill off it's a little tricky, but it snaps right off and back on just like the video. Pay attention where the plastic trim clips go back in the front and fender well. This new version (-4) with the twist on and off base plates is better than the older version (-1) I had before. It is much easier to put on and off the car for towing. My CR-V is black so with the plates off you can barely see the receivers. Great product! 207980



- RM-523182-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Great product with good directions to peel back the "plastic" front end parts to reach where they mount. Plus etrailer staff backup to answer any questions that may come up. 429596



- RM-523182-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Bought the base plate for my new 2016 GMC Canyon. Installed it myself, went real well. 316743


Comments

Great, no issues

Wayne R - 11/15/2017

30937

- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


I’ve towed my Jeep Wrangler, using this base plate and Roadmaster Falcon 2 tow bar, over 5000 miles and it has performed flawlessly. 572901



- RM-523182-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


I have ordered many products from etrailer and their customer service is 12 on a scale of 1 to 10. I ordered my products on the weekend and they were delivered on a Wed. I also later found cheaper prices on a few of the items and submitted the info for the 110% lower price guarantee and received the refund within a few hours. These folks are just plain great! 450640



- RM-523182-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


This was my 4th install of a RM base plate. Armed with several variants of written and video instructions we carefully started disassembling a new truck... Like the others base plates, everything fit. I have a 2018 GMC Canyon Denali 4x4 and the instructions were for a Chevy Colorado/Canyon/ZR2 and were off a bit. The GMC Denali install seems to be closer to the Chevy ZR2. In a few cases the trim fasteners and locations differed but all in all, reasonably similiar. Some differences: I did not have to remove the air dam. The fascia was notched at the bottom. Criticism: The width of vertical receiver plate introduced a gap between the 45 degree bumper core end brace and the truck frame. I might weld or bolt a shim to compensate. 579349



- RM-523160-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Received product in very quickly. My son & I installed it on 2015 Equinox only took about 2 & a half hour with no problems. Great directions & videos. 474667



- RM-521559-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


The instructions were good and the passenger side of the base plate fit perfectly, but the driver's side did not. Had to 'drill out' the holes on the top and the inside, because the pre drilled holes we off about 1/8 inch. This misfit resulted in a lot longer to complete the project. 58787



- RM-521424-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


well I finally put my tow bar base plate on. I'm 82 years old so I had my doubts as to weather I could do this so I checked out a location that could have one this job for me but they wanted a hundred and fifteen dollars an hour labor so I said to hell with that . I looked at the directions that you sent with the Base Plate and said to myself, I can do this. Well I did it. Your instructions were dead on and I had no problem at all, In fact I hade a little fun doing it. Thanks a lot It's going to be great. 486722


Comments

Its going great

Neal - 03/20/2019

50794

- RM-523184-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


I installed the trailer hitch first and it was quite simple, total time about 1 hour. Next I installed the EZ4 base plate kit on our 2017 GMC Terrain, a little bit more difficult, but the step by step video made the whole process much simpler, in fact, I kept my laptop in the garage while I was doing the installation and stopped/started as it did the work. I can't thank you enough for the video clips, they are a tremendous help. We will be leaving in a week or so, can't wait to try it out. 515670



- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


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. 554274



- RM-523162-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


THE SALES PEOPLE @ ETRAILE ARE GREAT TO WORK WITH. THE SUPPORT I NEEDED TO INSTALL THE BASE PLATES WAS OUTSTANDING. THANK YOU, DOUG. 109509


Comments

Doug, just purchased a 2014 Cadillac srx 4 looking for base plates which you have. Now I have a roadmaster falcon tow bar that I tow my jeep wrangler with, will I have to change anything besides the new base plates to tow the SRX ???

-- comment by: Henry R - 06/05/2014

4687

I have checked with our contacts at Roadmaster and in addition to the EZ Base Plate kit that is confirmed as a fit for your 2014 Cadillac SRX, you will need a set of the Quick disconnect plates # RM-222
Roadmaster Tow Bar Quick Disconnects - Car Side Only
$41.95
to connect with your Falcon Tow Bar. These will mount to your Cadillac base plate and will connect to your Falcon Tow Bar crossbar. These quick disconnects will allow you to easily change from towing your Jeep to your Cadillac. In addition to your tow bar and base plates, please make sure that you have all the necessary components needed for a complete flat towing system for your Cadillac like: safety cables, lighting, and supplemental braking. Depending on how you have things set up for your Jeep you maybe able to transfer all of these components to your Cadillac.

-- Rachael H - 6/9/2014

Comments

You would not even know that the car was behind our motorhome. I am very pleased with the help I received. Thank you, Doug.

DOUG - 12/08/2014

7935

- RM-521559-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


What a great company to do business with. I was going to have my Son do the install but with the help from the Pro’s at etrailers I did it my self with no problem. I take my Hat off to, Michael H, Nicole, and Amy who gave me advice and answered all my questions. Thanks again 59196



- RM-521567-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Works very well on my 2012 Honda CRV. However, the wiring holder is obtrusive so I cut it off and used an alternative mounting method fo the wiring. Medium difficulty to install, but if you're handy and have the correct tools, it takes a couple of hours or so. Be sure to also buy the rubber inserts for looks and protection when not being towed. 334883



- RM-521447-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Extremely fast shipping, ordered on Sunday, received the base plates and other parts on Tuesday. (MO to NW Chicagoland) . This was the free shipping option. Thank you Etrailer. 202365


Comments

Your towing brackets,self installed have been working A OK for about 3000 towing miles on my 2015 Cherokee. I like them very much and they are build solid.

Siegfried D - 06/09/2016

18478

- RM-523182-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Product is high quality. George J kept me informed of the progress of my order my order was easy to track. I am very pleased with my purchase at an excellent price. Thank you etrailer for your excellent service and dependability 355612



- RM-521567-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Called other supplier who wasn't aware of Roadmaster EZ4 Base Plate Kit. Went to etrailer.com and immediately found the Roadmaster EZ4 base plate listed on the etrailer.com web site. Called etrailer to confirm. Customer service representative was very courteous and knowledgeable of Roadmaster products. Placed order and received it promptly. 144060



- RM-521424-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


This base plate bolted up quickly to my 1997 Jeep TJ. Instructions were simple and truly made it easy. No problems after a year of installation, close to 4000 miles of towing. 573476



- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


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. 126011


Comments

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

Bob T - 04/20/2015

10963

- RM-521440-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


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. 444111


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

44806

- RM-521559-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Purchased a Stowmaster baseplate for my 2009 Honda CRV. The quality construction and welding on this base plate is superior! The engineering was excellent and the assembly fit perfectly! The installation instructions were very detailed and the color photos made the project easy and straight-forward! Installation took about 2 hours but was not difficult. Shipping was on time and quick! Highly Recommend etrailer!!!! 491174



- RM-522114-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Excellent service and product. Purchased a tow bar bracket for a new Kia Soul. The instructions were easy to follow and the bar fit the car without having to modify anything...I have towed the car several times, and the connection to the tow bar is easy... 357476


Comments

Worked fine, have since sold vehicle

Alan - 03/23/2018

36356

- RM-523182-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


We purchased this item on a Friday and it went on sale on Sunday. This company is excellent to deal with. They credited my account within an hour. Thank you etrailer! 574770



- RM-521559-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Installed this base plate on my 2007 CR-V today. Instructions were clear and very helpful. Had to drill out two holes through frame to install longer bolts. Only caution here is when trying to torque these two bolts , the hollow frame channel will begin to deform before torque spec is reached. Hope the Loctite holds! 470677



- RM-523182-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


The units went on my Chevy truck great and they work well the only problem is I can't take off my tow bar unless I unbolt it from the base plates so I have to leave the unit on all the time. It would take 4 bolts to remove . Then I could unlock the base plates and turn them in order to remove them. 443465


Comments

The base plates they are working fine I dont remove them they stay on all the time it has been 2 years now the tow bar that I use is bolted on so I would have to remove them to get the s out I should do this some time so they dont rust in place but real nice right now .

Jim L - 10/18/2018

44776

- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


This company has provided the best customer service and support I have had since the 60's Thank you all at etrailer Kevin 575189



- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


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 365012



- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


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. 447255


Comments

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

Jeffrey - 10/29/2018

45171

- RM-521440-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


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. 419521


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

42353

- RM-524431-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


The product was easy to install. Work as advertised. Great Quality! 689938



- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


The Roadmaster base plate looks to be a well built product with good welds and fit. The instructions are clear and the base plate bolted right in. The tab for electrical plug was bent but easily straightened. I t could use some additional protection in shipping. 688227



- RM-523162-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


I would have given this product a 5 but there were a few minor adjustments needed. Over all it was an easy install which I did myself. My wife was satisfied with it because it was her car being towed. We were finally able to use it and everything worked great, very easy hook up and release. I would recommend this setup for anyone towing up to 8000 lbs. 686808



- RM-524438-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Great product. Fast delivery. Will Buy here again. 686778



- RM-521450-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Ordered the Roadmaster baseplate for my new Jeep and it not only arrived on time but a day early. Given we are going on vacation Friday that gives me a full extra day to install. Thanks for the quick turnaround on my order. 686609



- RM-521448-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Item isn't installed yet but the order and shipping was outstanding. My order arrived via UPS in just a couple of days. Great job. 682875



- RM-521452-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


As usual very professional and on time. Thank you again for being so supportive of reshipping the Bracket. Will try and get some pic's of the installation for you. 679320



- RM-523182-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Thank you. Thank you for helping me find the right parts.All parts went on well from start to finish. Shipping was all on time. Everything I get from etrailer. Is top notch. 679157



- RM-524447-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


I would recommend you too all my friends and family. 673855



- RM-521450-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Will write a review when installed, as far as the order it was easy and delivered quickly. 673162



- RM-521452-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Heavier than the base plates for my 2015 Ram 1500 which really surprised me. I haven't installed it yet so I can't talk about ease of instillation. 667792



- RM-521452-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Towing Connections DON'T HAVE TO BE UGLY! (see photo) I bought a new 2019 4x4 Jeep Cherokee Limited with the Active Drive II transmission. It included the Technology Group option with Adaptive Cruise Control, etc. I then bought the corresponding Roadmaster baseplate (521452-4) to couple with our old Falcon All-Terrain towbar from a previous Jeep. I installed the new baseplate myself but it took a lot longer than the quoted two hours. This was partially because I was new at it. But mostly it was because the baseplate parts didn't all fit correctly: the driver-side rear brace was too wide, and two of the holes on the passenger side of the main receiver brace were off by half the width of the holes. These problems took special, expensive tools to correct because the parts are made from 1/4" hard steel. The other major factor was that much of the Roadmaster's instructions were not correct for my Cherokee even though it was the same model and year. There were several instructions that were no longer correct as well as having steps for removing parts that didn't need to be removed. A lot of time was wasted trying to sort through the instructions. Overall, between trying to reach Roadmaster's tech support, trying to find a source for the recommended tools, and doing the actual work per Roadmaster's instructions, days were wasted. From Roadmaster, the baseplate kit arrived with the paint chipped/scraped off in many places such that the parts were already starting to rust. To make it so the paint on the towbar assemblies – including the old, rusty towbar – would hold up better, I rounded all the sharp corners/edges ... especially those that regularly strike each other when getting ready to tow. I then primed and repainted the parts. After that, I focused on retaining the looks of the Cherokee's front end. For expediency, a typical towbar installer will attach all the connection components such that they stick out in front of the fascia. That's quick and easy but the results look pretty ugly. Instead, I spent some time – and about $10 on the following – to make the installation look professional (see photo). CAPS for the receiver arms were created to protect them. (The insides of the arms were already rusting even without ever towing ... or even driving in the rain.) I made the caps from 1-1/4 PVC threaded plugs (Lowe's #51526). The threads and embossed writing on the tops were ground off with a belt sander. On what had been the threaded part of each cap, a groove was cut to hold an O-ring (A5568 size 125) so the caps fit snugly into the receiver arms. The BREAKAWAY SWITCH was mounted behind the grill on a wooden block attached to the Main Receiver Brace's crossbar; that allowed it to face out yet stay hidden. A trim ring from a bathroom-sink-drain assembly was painted black after the threaded part was notched a little to accommodate the switch's junction box. The silver split-ring was replaced with a black (memotite) key ring. The 6-PIN SOCKET (Roadmaster 910030-7) was mounted on the two stems that stick out from the baseplate's main receiver brace. However, I bent, angled, and shortened both stems so the socket would sit flush along the curved grill's centerline. I also drilled the holes deeper into the ends of the two stems so I could use longer (1"), #10, self-drilling screws. The screw heads were painted black. All the WIRES were placed inside black, heat-shrink tubing and tucked out-of-sight using zip ties. Additionally, with the hopes of keeping the paint from being chipped away while traveling, I added material to take the play out of the Quick-Disconnect parts. To prevent the crossbar's QD bases and the QD mounting brackets from hammering metal against metal, I glued four small rectangles of EPDM rubber (i.e., 45-mil (3/64") pond liner) onto the horizontal flat areas where they rest on each other. And, to further eliminate any bouncing, I slipped a thick, rubber grommet onto each of the two upper, vertical, mounting-bracket pins before I inserted their linch pins. That $3 investment significantly quieted the towbar while promising to eliminate a lot of the typical paint chipping and rusting. (With any luck, Roadmaster will see this review and correct/improve their products accordingly.) 666401



- RM-521882-5
by:

Review from a similar Roadmaster EZ4 in Base Plates


Easy installation. The instructions and video they provided where very helpful. Customer service was VERY good and seemed genuinely concerned that I got what I wanted and needed. I would buy from them again. 664715



- RM-524431-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


I installed all the products that were purchased from etrailer.com with the assistance of the videos. It was helpful and it saved me from having to pay someone to do the work for me. etrailer.com is a great website to purchase all one's needs for towing equipment. Thank You 665682



- RM-521450-4
by:

Review from a similar Roadmaster EZ4 in Base Plates


Good product. Fit as explained. 663103


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Ask the Experts about this Roadmaster Base Plates

Do you have a question about this Base Plate?


  • Parts Needed to Flat Tow a 2007 Jeep Liberty Behind an RV
  • There are several differences between the EZ5 base plates # RM-521423-5 and the regular EZ base plates # 521433-1. The biggest difference is what each of them fits. EZ5 base plates # RM-521423-5 fit the 2002 to 2007 Jeep Liberty. EZ base plates # 521433-1 fit the 2008 to 2012 Jeep Liberty. Since you have a 2007 Liberty you would need to use either the EZ5 base plates # RM-521423-5 or the EZ4 base plates # RM-521423-4. The difference between these is the design of the removable arms....
    view full answer...

  • Parts Needed to Flat Tow a 2006 Jeep Liberty with a Roadmaster Sterling All-Terrain Tow Bar
  • According to the owner's manual I found online your 2006 Jeep Liberty can be flat towed since it has 4-wheel drive. You should verify with your printed copy if you haven't already. The base plates to use with your Sterling All-Terrain Tow Bar # RM-576 is the EZ4 Kit # RM-521423-4. These are custom fit for the Liberty. For safety cables us # RM-643. In addition to the tow bar and base plates you'll need wiring to power the Jeep's lights, a braking system, and likely a high-low adapter. To...
    view full answer...

  • Can I Purchase Replacement Removable Arms for the Roadmaster Base Plate Kit?
  • You may purchase replacement drawbars for the Roadmaster EZ kits. Each base plate has its own specific draw bars that you must use. They are of a specific shape and design to be used on a specific vehicle so you cannot interchange them. For replacements for base plates you will need # RM-ARMS. Use the instructions, linked to the right, which is actually a form that needs to be filled out to ensure the new replacement arms will fit. If you need replacements for the 2005 Jeep Liberty, the...
    view full answer...

  • Recommended Flat Towing Setup for a 2005 Jeep Liberty With Roadmaster EZ4 Base PLate Kit
  • I really like the base plate kits that have the removable arms like the Roadmaster EZ4 # RM-521423-4 does because it will give your vehicle, your 2005 Jeep Liberty in this instance, much more of an OEM look when you are not flat towing it. I do not recommend using the Tow Ready Adjustable Tow Bar # 63180 as it is a very entry-level tow bar that requires the tow bar mounting brackets to be bolted to your bumper. For some applications there will need to be a custom bracket installed due...
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  • Availability of Plug and Play Flat Towing Wiring Harness/Flat Towing Equipment for 2004 Jeep Liberty
  • I believe TowDaddy was purchased by Hopkins a couple few years ago. Hopkins offer a plug and play flat towing wiring harness, part # HM56203. If you click the provided link, you can see an installation video showing the harness being installed on a 2006 Jeep Liberty. To fully equip your Liberty, you'll need base plates, a tow bar, safety cables, the wiring solution you've asked about, a supplemental braking system and perhaps a high/low adapter to level the tow bar. For base plates,...
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  • Will SMI Stay-IN-Play DUO Drain Battery on 2006 Jeep Liberty While Flat Towing
  • Since the SMIStay-IN-Play DUO Supplemental Braking System # SM99251 uses power from your 2006 Jeep Liberty's battery to engage the compressor, it is possible that the Stay-IN-Play could potentially drain the vehicle's battery over the course of a number of hours. We have not heard reports from our customers on this, but it is a possibility. I was not able to find any known issues of the Liberty's battery being drained while in tow mode in the vehicle's owner's manual. One thing...
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  • Is Roadmaster EZ4 Base Plate Kit RM-521423-4 Compatible with Falcon Tow Bar
  • Yes, the EZ4 base plate kit part # RM-521423-4 that you referenced is compatible with the Roadmaster Falcon 2 tow bar part # RM-520.
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  • Parts Needed to Flat Tow a 2006 Jeep Liberty
  • Unfortunately, the baseplates from your friend's CJ5 are likely not going to work. I can't say for certain since I don't know what they are but there are no base plates that we carry that will fit a CJ5 and your 2006 Jeep Liberty. We also do not have a list of installers around the country so there isn't a specific location I can refer you to. All the necessary parts to set your Jeep up to flat tow can be installed by a common mechanic so you may want to look around at shops that might...
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  • Parts Needed To Flat Tow 2005 Jeep Liberty with Blue Ox Rangefinder II Two Bar
  • In order to tow your 2005 Jeep Liberty with your Rangefinder II BX4322 tow bar, you will need to use Roadmaster base plates, such as the EZ4 Base Plate Kit # RM-521423-4, with the Blue Ox Rangefinder II to Roadmaster Bracket Adapter # RM-037. This setup is needed because Blue Ox does not offer a base plate kit for the 2005 Liberty that is compatible with the Rangefinder II tow bar. You will also need a light kit for the Liberty. For a temporary lighting solution you can use the Magnetic...
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  • Adapter Needed for the Reese Tow Champ Tow Bar to RoadMaster Base Plates for the 2006 Jeep Liberty
  • Yes, there is an adapter for you Reese Tow Champ Tow Bar, part 74950. It is the Roadmaster Base Plate to Tow Ready Tow Bar Adapter, item # RM-025. This adapter will connect to your tow bar and allow you to connect to the Roadmaster # RM-521423-4 Base Plate Kit, that you are installing on your Liberty. Along with this adapter you will need the Roadmaster Tow Bar Quick Disconnect Kit, item # RM-201 to easily remove the adapter and tow bar from the towed vehicle. You will get the short...
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  • Recommended Components for Flat Towing 2002 Jeep Liberty Behind a Motor Home
  • The Roadmaster EZ4 Base Plate Kit # RM-521423-4 is a good fit for your 2002 Jeep Liberty as long as your vehicle does not have a brush guard. This kit features a hidden bracket design which allows the draw bars to be easily removed via 2 pins, giving the base plates a more subtle appearance. It is also compatible with all Roadmaster tow bars. If your Jeep does have a brushguard, you can go with the Roadmaster EZ Base Plate Kit # 521426-1. Prior to flat towing your vehicle, be sure to...
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  • Recommendation for Parts Needed to Flat Tow a 2007 Jeep Liberty
  • You are correct. For your 2007 Jeep Liberty, you will need base plates to flat tow it. You can use the EZ4 Style Base Plates, # RM-521423-4. I have included a link to a video showing a typical installation. If you would like to use the Tow Ready Tow Bar, # 63180, you will need to use an adapter, # RM-025, and Quick Disconnects, # RM-201, to adapt the tow bar to the base plates. You will also need to Keep in mind that this tow bar is rated for towing speeds of 45 miles per hour or less....
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  • Is there an Adapter to use Roadmaster StowMaster Tow Bar with Blue Ox Base Plates on a Jeep Liberty
  • We have several adapters that can be used with Blue Ox base plates and other tow bar systems. Unfortunately we do not currently offer an adapter that will work for with your StowMaster 5000 tow bar that will be compatible with the Blue Ox base plate kit, # BX1122, that you have ordered. I have included a helpful article that shows base plate and tow bar adapters and compatibility. You can either use a different set of base plates like the Roadmaster # RM-521423-4. Or you could use...
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  • Can EZ5 Base Plates Be Used With Roadmaster Stowmaster Tow Bar On 2005 Jeep Liberty
  • The base plates that are designed to fit your 2005 Liberty and work with your Stowmaster tow bar are part # RM-521423-4. These are the EZ4 base plates, and have removable arms so it gives your Jeep a nice clean look when they are removed. The EZ5 base plates, part # RM-521423-5, will not work with any tow bars that use a hitch ball and are designed to work with tow bars that slide into a trailer hitch. For tow bar lighting I recommend the Hopkins Custom Wiring, part # HM56203....
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  • Base Plate Kit, Tow Bar, Safety Cables, and Lighting Needed to Tow 2004 Jeep Wrangler
  • In order to use a tow bar with your Jeep, you will need to add base plates, # RM-521423-4 for models without brush guard or # 521426-1 for models with brush guard. You will then need to add Roadmaster Base Plate to Tow Ready Tow Bar Adapter, # RM-025, to be able to use the Tow Ready Tow Bar, # 63180. Keep in mind that this tow bar is rated for towing speeds of 45 miles per hour or less. The RoadMaster Tracker Tow Bar, # RM-020, may be a much better choice if you will be towing often...
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  • Recommended Dinghy Towing System for 2006 Jeep Liberty
  • I'm happy to assist with recommendations for your 2006 Jeep Liberty for flat towing. Your Roadmaster tow bar will work just fine with the Roadmaster Crossbar-Style Base Plate Kit # RM-521423-4 and Loctite # LT37420. Then you will also need the safety cable # RM-643. Then for your tow bar wiring, I recommend the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56203 along with the Hopkins Nite-Glow Tow Bar Extension Cord w/ Socket - Coiled - 7-Way RV to 6-Way Round - 8' Long...
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  • Why Arent all of the Removable Arms of Roadmaster Base Plate Kits the Same
  • All of the removable arms for the Roadmaster base plate kits are made differently. Basically they all have to put the mounting brackets at the same width for the tow bar attachment but not all vehicles have the same frame width. If you were looking to install the arms you have on a new vehicle you'd have to go with an all new base plate kit.
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  • Parts Needed to Flat Tow a 2017 Jeep Wrangler Sport Behind an RV
  • Roadmaster base plates 521423-1 are a discontinued set that was designed originally to fit the 2002 to 2007 Jeep Liberty. They will not fit on a 2017 Jeep Wrangler Sport though. The good news is we do have base plates for your Wrangler, # RM-521448-4 (for standard factory bumpers). For a compatible tow bar I recommend the Falcon 2 # RM-520 with safety cables # RM-643. The Falcon 2 is a versatile tow bar that makes hooking up and disconnecting easy even when not perfectly straight or...
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  • Needed Tow Bar and Accessories to Flat Tow 2007 Jeep Liberty
  • In order to flat tow your Liberty, you will need to install a base plate kit. I would recommend the Roadmaster EZ4 Base Plate Kit, part # RM-521423-4. A base plate offers a safe and secure attachment point to the vehicle. This particular Roadmaster kit offers easily-removable drawbars. One they are removed, the bracketry is pretty much invisible. If you are mechanically inclined, you might be able to handle the installation, but it is fairly involved. Typically, an RV would have a receiver...
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  • Availability of an Adapter to Use Roadmaster Base Plates with Blue Ox Tow Bars
  • I have a solution for you. The Roadmaster Base Plate to Blue Ox and Demco Tow Bars Adapter, # RM-033, will allow you to use your Blue Ox tow bar with Roadmaster base plates on your 2006 Jeep Liberty. For the adapter to work with the Roadmaster Base Plates, # RM-521423-4, the Roadmaster Quick Disconnect Kit, # RM-201, will be required to mount the tow bar adapter to the base plates. The adapter is compatible with Blue Ox Acclaim, Adventurer, Aladdin, Alexxa, Allure, Alpha, Ambassador,...
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  • Will the Roadmaster Falcon All Terrain Part # RM-522 Fit a 2007 Jeep Liberty
  • Roadmaster currently has two base plate kits for your 2007 Jeep Liberty which are the Roadmaster EZ5 Base Plate Kit part # RM-521423-5 and the Roadmaster EZ4 Base Plate Kit part # RM-521423-4. Both the EZ4 and EZ5 will work with the Roadmaster Falcon All Terrain part # RM-522. You will not need any additional parts to pair the Falcon with the EZ4/EZ5 base plates. I have attached a review video of the tow bar for you as well. If you need any other parts to complete your flat-towing setup...
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  • How to Order Replacement Arms for Roadmaster Base Plate Kit
  • If you were to lose one of the arms that came with the base plate kit part # RM-521423-4 (or any Roadmaster kit) you'd have to order the replacement arm kit part # RM-ARMS which actually is a request sent off to Roadmaster to have a custom arm made since they are all unique to the vehicles they fit. Due to some variances sometimes two different identical part number base plate kits won't allow the arms of the other to fit.
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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Jeffrey L
Updated by:
Shelly K
Written by:
Sarah W
Photos by:
Stacy F
Updated by:
Jenny M
Updated by:
Mike S
Updated by:
Isabelle B

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