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FITS 2006 Jeep Liberty
Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

Item # RM-521423-4
Our Price: $485.00
Base Plates
Confirmed to Fit
2006 Jeep Liberty

without brush guard

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Shipping Weight: 38 lbs
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Roadmaster base plates for your 2006 Jeep Liberty are available from Installation instructions and reviews for your Jeep base plates. Expert service, and great base plates prices. carries a complete line of Roadmaster products. Order your Roadmaster Crossbar-Style Base Plate Kit - Removable Arms part number RM-521423-4 online at or call 1-800-940-8924 for expert service.
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2006 Jeep Liberty - Roadmaster Crossbar-Style Base Plate Kit - Removable Arms

  • 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 Jeep Liberty's frame to provide attachment points for your tow bar.


  • 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.

521423-4 Road Master EZ4 Base Plate Kit

Replaces 521423-1

Installation Details RM-521423-4 Installation instructions

Customer Satisfaction Score:

Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (831 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.


I installed the base plate system on my 2007 Jeep Liberty. I cheated for comfort by putting the Jeep on my 12000lb hoist. Depending on what task I was dewing, I could sit on my stool and move the hoist up or down. This way I could stand or sit to work. I kept the directions close at hand and when I ate my lunch, I watched [online] for hints. I had no problems with my install. The shops wanted over $xxx to do the work. I would have had to wait about 6hrs at the shop. I spent about 7 hrs working at home, but not working hard. Happy Camper.

2005 JeepLiberty

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.


I love it. I watched the how to install video on your web and the instructions were easy to follow. Didn’t take long.

2005 JeepLiberty

Good instructions fairly easy to install


Very well made. Installation went just as stated in the instructions!

2002 JeepLiberty

Over all a very well made base plate the only issue I had was the front bolt on both of them it would go up into the plate and you can not get to it with a wrench or a socket I had to drive a large screwdriver beside it to hold the bolt and run the nut down with a wrench


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.

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


Easy installation, has worked well for me. Would purchase again if I change toads.


Easy to install and use, no complaints at all I will definitely be shopping at Etrailer again


As always very best service and know what they talking about!!!


So far everything is good


Fit perfectly


Was easy to install and use . We have used them several time in the last year .


Easy instillation have used product a lot with no proplems


Works great. Easy operation.

2005 JeepLiberty

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


easy to install/


Great service and quick delivery. Always have what I need.

2005 JeepLiberty

2003 JeepLiberty

Went in Smoothy






Had Base Plate installed today, shop gave me 2.5 hr labor time. I returned just under 2hrs and they were backing my car out the shop. They parked it facing me. I told the Mechanic "That was quick" He said that's because it wouldn't fit. I was disappointed and asked what do I owe you for your labor> He laughed out loud and said it on there, but hard to see. I was so surprised and pleased you have to just about get down on your knees and bend down to see it. took me about 8 min to install everything and connect it to the Tow vehicle. I'm very pleased with it.

ped everything offfor overnight at local shop that does all my work. They called me when it was ready next day,Base Plate fit fine with no installation issues. I have used a number of times now and its always been easy and quick to connect or disconnect, very happy with it.
Ron S - 05/04/2023

Show More Reviews

See what our Experts say about this Roadmaster Base Plates

  • 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.
    view full answer...
  • Does Steering Wheel of 2006 Jeep Liberty Need to be Unlocked to Flat Tow it
    When flat towing your 2006 Jeep Liberty with a base plate kit like the Roadmaster part # RM-521423-4 that you referenced if you follow the flat towing procedure that's outlined in the owners manual the steering wheel would be unlocked like it would need to be.
    view full answer...
  • 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...
    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...
  • 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.
    view full answer...
  • 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.
    view full answer...
  • What Is The Hardware Kit I Need For A Roadmaster Crossbar-Style Base Plate Kit, Part # 521423-4
    The hardware kit that you need for the Roadmaster Crossbar-Style Base Plate Kit, part # RM-521423-4, is the Replacement Hardware Kit for Roadmaster Crossbar-Style Base Plate Kit, part # RM42ZR. This crossbar type base plate fits your 2005 Jeep Liberty. I have included a product description link below.
    view full answer...
  • 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,...
    view full answer...
  • Roadmaster Explorer Tow Bar And Roadmaster Base Plate Compatibility
    The Roadmaster Explorer Tow Bar you have is the previous version of the StowMaster # RM-501 and has a weight rating of 5,000lbs. You need the Roadmaster Tow Bar Quick Disconnects - Car Side Only Item # RM-222 to connect it to your base plates # RM-521423-4. Just bolt the # RM-222 to your base plates and you'll be able to connect the tow bar right to them. The video I've attached will show you exactly how to do this.
    view full answer...
  • 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. To...
    view full answer...
  • 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 a...
    view full answer...
  • Is Install of Base Plate Kits for 2002 Jeep Liberty Difficult
    The Roadmaster StowMaster part # RM-501 can be used to tow your 2002 Jeep Liberty but it will require you to install a base plate kit too with the part # 521426-1 if you have a brush guard or part # RM-521423-4 if you do not have one. The install of these kits isn't exactly difficult but it can take some time so you'd just need to set aside enough time and it would be very easy overall.
    view full answer...
  • Compatiblility of Blue Ox Patriot Brake System With 2006 Jeep Liberty
    I've confirmed with Blue Ox that the # BRK2012 Patriot II supplemental braking system is indeed comaptible with your 2006 Jeep Liberty. If you aren't already equipped with them, you'll need some additional items to complete your flat towing system. For a tow bar, I'd recommend the Falcon All Terrain tow bar, part # RM-522. The Falcon features non binding, self centering arms, which allow you to hook up to the motorhome even if the terrain isn't completely level or the tow vehicle isn't...
    view full answer...
  • 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...
    view full answer...
  • 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 safety...
    view full answer...
  • 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. There...
    view full answer...
  • 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 level...
    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...
    view full answer...
  • 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...
    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...
  • 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 or...
    view full answer...
  • 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, I'd...
    view full answer...
  • 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...
    view full answer...
  • Roadmaster Stowmaster Tow Bar-Compatible Base Plates for 2002 Jeep Liberty
    To use your Roadmaster # RM-501 Stowmaster with your 2002 Jeep Liberty, you'll need to use a crossbar-compatible base plate kit. If your Liberty has a brush guard, you'd use # 521426-1, or # RM-521423-4 for Liberty models without a brush guard. You'll also need safety cables like # RM-643, a wiring solution like # RM-15267, and a supplemental braking system like # SM99251 if the motorhome has hydraulic brakes or # SM99243 for motorhomes with air brakes. You'll also need the # RM-88400...
    view full answer...

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