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Roadmaster Direct-Connect Base Plate Kit - Removable Arms

Roadmaster Direct-Connect Base Plate Kit - Removable Arms

Item # RM-521451-5
Our Price: $387.95
You Save: $97.05
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Designed for use with motor-home-mounted tow bars, the direct-connect brackets are virtually invisible, easy to mount and remove, and they eliminate the need for a quick-disconnect crossbar on your tow bar. Installs on your vehicle's frame. 1-800-940-8924 to order Roadmaster base plates part number RM-521451-5 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Direct-Connect Base Plate Kit - Removable Arms. Base Plates reviews from real customers.
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Roadmaster Base Plates - RM-521451-5

  • Removable Drawbars
  • Roadmaster
  • Twist Lock Attachment

Designed for use with motor-home-mounted tow bars, the direct-connect brackets are virtually invisible, easy to mount and remove, and they eliminate the need for a quick-disconnect crossbar on your tow bar. Installs on your vehicle's frame.


  • Direct-connect brackets provide attachment points for your motor-home-mounted tow bar
  • Streamlined design creates supremely clean look
    • No obtrusive quick-disconnect crossbar
    • Hidden brackets sit even farther back than standard brackets
  • 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
  • Compatible with Roadmaster motor-home-mounted tow bars only
  • Instructions and mounting hardware included
  • Made in the USA
  • Limited Lifetime Warranty

Note: Roadmaster direct-connect base plates will only work with Roadmaster tow bars that slide into a trailer hitch, such as the Nighthawk, Sterling, Blackhawk, Blackhawk 2, Falcon, or Falcon 2. These base plates will not work with tow bars that require a hitch ball.

The drawbars, or front arms, on this 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 each arm, simply tug the built-in pull pin to disengage the lock, twist the arm back and pull it out of the bracket. 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.

521451-5 Road Master EZ-5 Base Plate Kit

Installation Details RM-521451-5 Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Roadmaster Direct-Connect Base Plate Kit - Removable Arms - RM-521451-5

Average Customer Rating:  4.8 out of 5 stars   (1936 Customer Reviews)

Designed for use with motor-home-mounted tow bars, the direct-connect brackets are virtually invisible, easy to mount and remove, and they eliminate the need for a quick-disconnect crossbar on your tow bar. Installs on your vehicle's frame.


Installed on my 2020 Jeep Cherokee for flat towing behind our motorhome . I wanted a tow bar connection that integrated with the front end of the Jeep and the removable arms did the trick . I had one issue with the driver side receiver bracket not lining up with the upper mount bolt hole on the Jeep, image 0547. Had to make a slight adjustment to the receiver bracket so the holes would line up, image 0551 and image 0559. The rest of the install went smoothly
I also installed the Demco braking Stay n Play Duo system , image 0565 which went in without any issues, image 6028. 7 thousand miles of towing later, couldn't be happier with the products


Installers beware! I had a very difficult time with this base plate kit because of a mid-2022 redesign by Roadmaster that makes it very challenging to install.

Roadmaster added a tang on top of each base plate to supply additional bracing of the unit against the bumper core. It requires installing two additional bolts and spacers on the upper mount in an area where there isn't easy access due to bracing. This has not been reflected in the picture of the part on etrailer nor is it included in any of the installation videos. The Roadmaster instruction text says to remove the existing bolts from the bumper horn and then reinstall them but with the needed spacers and the set-back of the upper mounts on the redesigned base plate the bolts aren't long enough. I guess to compensate RM supplied two new bolts as seen in the drawing. The problem is, the supplied bolts aren't the correct thread pitch. The RM supplied bolts are metric 1.5 but the welded nut on the Cherokee is 1.25 thread pitch thus requiring a trip to the hardware store to get the proper bolts. Then, when trying to install them you don't have clear access due to bracing. You're trying to hold a spacer in place, using an extension with a universal joint and the socket to get the bolt started. To make matters worse, the upper mount bolt holes on one of the base plates didn't align with the jeep because the tang wasn't at the right height. I had to use a crow bar and a lot of effort to slightly bend up the heavy steel tang to get it to mate up. To top it all off one of the arms was locked in the receiver and wouldn't budge. I had to resort to using a breaker bar inserted in the arm end and a mallet to slowly get the arm to even rotate in the receiver. After much effort I eventually got it to rotate as it should in the receiver and then managed to extract it. When I got it out it was badly scored from the rough welding detritus way down in the receiving tube (see photo attached). I used a file to clear the tube and now it works properly but you have to ask where was the quality control when this arm was inserted in the receiver tube? It had to be obvious that it wasn't going in properly.
All in all I was extremely disappointed with the amount of effort and time I had to put into what should have been a straightforward installation. The redesign makes the job take at least twice as long as it should have.

Jeep Cherokee

2022 Jepp Cherokee Trailhawk. Fits and works great. We have towed from North Carolina to Texas and other trips, no problems.


I haven't opened the box yet, but I appreciate the prompt shipping, especially your tracking web site
Very pleased.

Robert J.


I had this installed by Roadmaster. It is a great product and very easy to set up. I chose it because of its price and quality.

2019 Jeep Cherokee

All parts arrived in good condition. This base plate was installed on a 2019 Jeep Cherokee Trailhawk. The top two bolts take a little work to get lined up.


Traded my older tow for 2020 model Jeep and had to refit to tow. Was pleased what I ordered had a green “Guaranteed to fit” my new tow before placing my order. Parts have not been installed yet, waiting for wire harness. Spoke with a very pleasant and helpful person “Allison” who advised me on the wire harness for my new tow vehicle. The base plates came with all parts for installation accompanied with clear instructions and pictures for each step. The shipping box was slightly damaged but all parts were there and zero damage, padded well in box. With my experience so far, I will be a returning customer.


My first order didn’t arrive with the other items ordered. I specifically asked the supplier which tow package fit my 2020 Grand Cherokee. My car was dismantled for installation, and the guy said it wouldn’t fit. I called and found out they sent the 2020 Cherokee kit. I ordered, what I hope, is the correct one to install, delaying my trip. I got online to print the return label to find out they would subtract the $xx shipping fee. I called and was told they’d make a note to not charge me for the return shipping. I was also told I’d receive an email for the one arriving with tracking. I cannot locate it. Hoping it arrives tomorrow, as expected.


Top 2 bolts and spacers are a nightmare! Bolt holes did not line up with the holes in the frame. Started install on a Saturday. I called etrailer for advice, all they had was: it's the right part. Their video was from the previous version without the top two bolts. So I waited till Monday to talk to Roadmaster. Their response was to take a pry bar and pry up on the upper plate to get it to align. On the drivers side, there is barely any room to reach the inside hole, and then to have to align a spacer as well? All in all, it would have been simpler to grind off the lip and use the e-trailer base plate kit. The mounting plate for the 6-wire plug won't even fit their wiring harness. anyway, I finally got it on, but a 4-hour job turned into 12 by the addition of those two bolts.


Works great but it took some time & effort to install. Hooking up to RV is easy and has been good - except when I forget to replace the wire harness cover for the car.

2022 Jeep Cherokee

The four top bolts that replace the factory bolts were the right size , but the wrong thread pitch. I had to go to the local Napa store to purchase the right bolts.
The top bolt holes didn’t line up, so I had to use a die grinder to enlarge the holes to make it fit.


Easy to install great instructions
problem towing my Jeep Trail hawk


Great investment. We've towed or 2020 Trailhawk all over the U.S. without any issued.


Works perfectly. Great product and sup port


Product was delivered as specified and on schedule. I’ve ordered other items from Etrailer in the past. Again, without issue.


Installed on 2019 Jeep Trailhawk for Duo brake system so it was part of the completing that process that included the DUO. Installed Roadmaster Direct Connect base plate, Duo Brake systems to be used with Falcon All Terrain- The system has been great so far after one year in service.

The total install for everything probably took me 25-30 hours, working on it over several days. Removal of brand Jeep quarter panel and front end grill was a little nerve wreaking, but easy install on tow plates. The brake and electrical work used the other 60% of the time on this job.

I would consider myself to have intermediate skills for automotive repair activity. The slicing of the various electrical brake light system wires was a little challenging to due access in the front end and rear brake light housing. The video's from was very helpful in completing the process from start to finish ( although I had to watch it a number of times as I completed each portion of the install)

Note - The jeep brake light wiring will be connected to a plug in receptacle installed at the front of the jeep. Where the coil wire from the RV that plugs into this installed receptacle can become loose from plugging /unpluging the coil wire.
The pins can be pushed back thru that rubber housing easily if extreme caution isn't used each time and over time can loose contact with the coil connector. They should improve the plastic sheath that covers the backside of the pins in that receptacle so they cannot be pushed thru the back side.

2022 Jeep Cherokee

High quality. Received fast.


We purchased your Base Plate kit to tow our 2021 Jeep behind our Winnebago Class C motorhome. We have logged close to 5,000 miles so far without an issue. We are very pleased with this product performance.


So glad I bought these base plates as they were a perfect fit and required no vehicle modifications whatsoever. Truly bolt on using existing OEM holes in the vehicle frame.


Great to work with, friendly and very knowledgeable on their products. Will certainly be purchasing from etrailer again in the near future.

Dave M.


These are great! I love the way that these baseplates installed, the unobtrusive look on the front of the jeep and most of all I like the fact that they are connected directly to the frame of the vehicle and that the arms are separate and free floating with no cross bars. I really like the ease of the installation of the yokes and the removal when not in use.

2019 Jeep Cherokee

These fit like a glove on the 2019 Cherokee Trailhawk. Cannot even see the baseplate's when mounting brackets are removed.

Removing the facia is a bear. Take your time and use some auto trim removal tools (search online).


Easy order process and delivery


Perfect application

Jeep Cherokee

The most difficult part was getting the grill on my Cherokee Trailhawk removed, that was a real pain. Once that was accomplished the base plate was easy! Make sure that everything you will need to do is done while the grill is off (a job you only want to do once) !!! 7


Great product with very good DIY installation instructions. The product fit with no frame drilling and all hardware was perfect. The end product looks great and performs perfectly.


Excellent quality and workmanship. Very substantial and solid.

Show More Reviews

See what our Experts say about this Roadmaster Base Plates

  • How To Set a 2019 Jeep Cherokee Up for Flat-Towing
    The owner's manual is a great resource to use for setting a vehicle up for flat towing as it will usually list all the steps that you need to follow in order to do so. The correct steps for your 2019 Jeep Cherokee are listed on page 387 so this is where I recommend you look. I have attached them for you below as well. 1. Bring the vehicle to a complete stop on level ground, and shift the transmission to PARK. 2. Turn the engine OFF. 3. Turn the ignition to the ON/RUN mode, but do not start...
    view full answer...
  • Installation Of Roadmaster Base Plates On A 2021 Jeep Cherokee Trailhawk
    The Roadmaster Direct-Connect Base Plate Kit - Removable Arms Item # RM-521451-5 is going to attach to the front of the frame where the red tow hooks are on your 2021 Jeep Cherokee Trailhawk and will require you to remove the front fascia. I have attached a video that goes step by step through the installation of these base plates for you.
    view full answer...
  • Roadmaster Base Plate For 2020 Jeep Cherokee Trailhawk
    For the 2020 Jeep Cherokee Trailhawk that you have the Roadmaster base plate kit part # RM-521451-5 is a confirmed fit and will work great with your Falcon tow bar. The removable arms of the base plate kit you have now cannot be reused and also there isn't a way to buy the base plate kits without the removable arms.
    view full answer...
  • Does Putting 2020 Jeep Cherokee Trailhawk into Tow Mode Drain Vehicle Battery
    When you put your 2020 Jeep Cherokee Trailhawk in to tow mode it does not drain the battery. There would be no need to undue that once you are parked. Here's all of the steps for putting it into tow mode: 1. Bring the vehicle to a complete stop on level ground, and shift the transmission to park. 2. Turn the engine off. 3. Turn the ignition to the on/run mode, but do not start the engine. 4. Press and hold the brake pedal. 5. Shift the transmission into neutral. 6. Using a ballpoint pen...
    view full answer...
  • Is the Steering Wheel Unlocked On a 2020 Jeep Cherokee When Flat-Towing
    In regards to flat-towing a 2020 Jeep Cherokee, you'll need to follow the prescribed procedures outlined in the owner's manual which I have also attached for you below. 1. Bring the vehicle to a complete stop on level ground, and shift the transmission to PARK. 2. Turn the engine off. 3. Turn the ignition to the ON/RUN mode, but do not start the engine. 4. Press and hold the brake pedal. 5. Shift the transmission into NEUTRAL. 6. Using a ballpoint pen or similar object, push and hold...
    view full answer...
  • 2019 Cherokee Trail Hawk Front Facia Re-installation
    It sounds as if you're having difficulty installing the bumper cover after installation of the # RM-521451-5 base plate kit, is that correct? The most frequent reason for this occurring is that the cut out that was made made in the lower grille work for the electrical connector wasn't quite large enough, so it isn't allowing the cover to shift to one side far enough for the clips to engage. If you're working by yourself, that starting that bumper cover in the center and working outward...
    view full answer...
  • What Size is the Hole on Roadmaster EZ-5 Base Plate That Attaches to the Tow Bar
    I believe when you say clevis you're referring to the hole on the arm of the Roadmaster EZ 5 Base Plate # RM-521451-5 that would attach to your tow bar, and that hole is 3/4" in diameter. If I've misunderstood what measurement you're looking for and you're looking for the diameter of a different hole, just let me know and I can get that for you.
    view full answer...
    Image 1 for
  • Flat Towing Requirements For A Jeep Cherokee
    The first place to look when you're wanting to tow your vehicle is always the owner's manual. It takes all the guess work out and will give you step by step instructions to get your vehicle ready to tow if applicable. As for a Jeep Cherokee you will need the "ActiveDrive II" transfer case to be able to flat tow. If your Jeep Cherokee can be flat towed you'll need a tow bar, tow bar wiring kit, base plate, braking system, and safety cables. If you can reply back with the year of your Jeep...
    view full answer...
  • Steps for Returning 2019 Jeep Cherokee Trailhawk to Normal Driving After Flat Towing
    I found your online owners manual and here is all of the steps for getting your vehicle back into normal driving: 1. Bring the vehicle to a complete stop, leaving it connected to the tow vehicle. 2. Apply the parking brake. 3. Turn the ignition to the ON/RUN mode, but do not start the engine. 4. Press and hold the brake pedal. 5. Shift the transmission into NEUTRAL. 6. Using a ballpoint pen or similar object, push and hold the recessed power transfer unit NEUTRAL (N) button (located by...
    view full answer...
  • Roadmaster Base Plate Compatible with 2019 Jeep Cherokee TrailHawk
    For your 2019 Jeep Cherokee TrailHawk you can use either the Roadmaster Direct-Connect Base Plate Kit - Removable Arms # RM-521451-5 or Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521451-4. Both are a confirmed fit for the TrailHawk model. The difference is the # RM-521451-4 will use the quick release bar with the tow bar and the RM-521451-5 will directly connect to the tow bar without the cross brace.
    view full answer...
  • Can Roadmaster Direct-Connect Base Plates Install on 2020 Jeep Cherokee Limited with Tow Package
    The correct Roadmaster Direct-Connect Base Plate Kit for your 2020 Jeep Cherokee Limited is the part # RM-521452-5. The Direct-Connect # RM-521451-5 that you mentioned will only fit Trailhawk, Trailhawk Elite, and Overland models of the Cherokee and won't work on your Limited. I verified this with Roadmaster. The Base Plate Kit # RM-521452-5 will install without issue on your Jeep that's equipped with the factory tow package, which includes that extra radiator cooler. Factory tow hooks...
    view full answer...
  • Roadmaster and Blue Ox Base Plate Kits that Fit 2019 Jeep Cherokee Trailhawk
    Actually both Roadmaster and Blue Ox have two base plate fits for your 2019 Jeep Cherokee Trailhawk. Roadmaster has the crossbar style part # RM-521451-4 as well as the direct connect kit part # RM-521451-5 whereas Blue Ox has the part # BX1143 and the # BX1140 (no longer available) which are both the same style but were intended for different variations of the vehicle but happen to both fit the Trailhawk style.
    view full answer...
  • Recommendations for Getting a Tow Bar Base Plate Installed
    A local RV dealer could handle a base plate install, but a full-service mechanic would also be able to handle your installation with no problem. If you have somebody you trust that you regularly use, that's what I'd recommend. If you are close to our location in Wentzville, Missouri we could even handle the installation for you. To flat tow the vehicle, you'll need a tow bar like the Roadmaster Falcon All Terrain, part # RM-522, base plates on the vehicle to provide an attachment point...
    view full answer...
  • Easy Way to Disconnect Battery When Flat Towing a 2020 Jeep Grand Cherokee Trailhawk
    We have to recommend you stick with what the manufacturer recommends for flat towing your 2020 Jeep Grand Cherokee. Otherwise you run the very high risk of damaging the vehicle when flat towing it. Disconnecting the battery will reset your stereo presets, but it's better than having to have the transmission rebuilt. We do have the automatic battery disconnect kit part # RM-766 which will even put a maintenance charge on the towed vehicle battery as you are travelling. This would be your...
    view full answer...
  • How to Get Replacement Arms C002383 For Roadmaster Base Plates
    The C002383 you mentioned are replacement arms for a base plate kit as opposed to a tow bar, and to get replacement arms you need the Roadmaster Replacement Arms for Base Plate Kits # RM-ARMS.
    view full answer...
  • No Running Lights on 2019 Jeep Cherokee Behind Motorhome
    I would love to help but in order to do so I would need to know exactly which flat-tow wiring harness you have and how it is installed. For example, if you are using the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 then the running light circuit is spliced into behind the tail light and then run up to the vehicle side trailer connector with a diode in between. I have attached a wiring diagram of this for you as well. I recommend you check to make sure you are...
    view full answer...
    Image 1 for
  • Correct Roadmaster Base Plate and Tow Bar for 2019 Jeep Cherokee Trailhawk
    The correct Roadmaster Direct-Connect Base Plate Kit for a 2019 Jeep Cherokee Trailhawk is part # RM-521451-5. This Roadmaster base plate kit is directly compatible with all Roadmaster motorhome mounted tow bars like the Roadmaster Nighthawk All Terrain Tow Bar part # RM-676. A motorhome mounted tow bar is one that stores on the motorhome while not in use.
    view full answer...
  • Guardian Rock Guard Compatibility with Roadmaster Base Plates on 2019 Jeep Cherokee Trailhawk
    For your 2019 Jeep Cherokee Trailhawk, the Roadmaster EZ5 Base Plate Kit - Removable Arms # RM-521451-5 is not compatible with the Guardian Rock Guard # RM-4000, but it is compatible with your Falcon 2 tow bar # RM-520. The better option for you to enable use of both the tow bar and your Rock Guardian # RM-4000 is to use the Roadmaster EZ4 Base Plate Kit - Removable Arms # RM-521451-4. I confirmed with the manufacturer this is the correct fit for your 2019 Trailhawk.
    view full answer...
  • Will the Roadmaster Guardian Work With Roadmaster Direct-Connect Base Plates On 2020 Jeep Cherokee
    I do have a vehicle protector that can be used with the Roadmaster Direct-Connect Base Plate Kit part # RM-521451-5 on a 2020 Jeep Cherokee but the Roadmaster Guardian Rock Guard part # RM-4000 would require the Roadmaster Crossbar-Style Base Plate Kit part # RM-521451-4. There are no adapters or conversion kits for this. Instead, I recommend the Roadmaster Tow Defender Protective Screening part # RM-4750 which will work just fine with the Roadmaster Direct-Connect Base Plate Kit.
    view full answer...
  • Where to Install Breakaway Pin and Flat Tow Wiring Connectors on a 2021 Jeep Cherokee
    The best way to trim the front fascia on your 2021 Jeep Cherokee when installing flat tow equipment is to use a chalk marker and mark the fascia first. Hold up the piece that needs to be installed next to the fascia and then figure out which exact honeycomb pieces you need to trim. This takes all of the guesswork out of the installation and leaves you with a clean-looking installation. Attached is a photo of how we did this with the breakaway pin for the Demco SBS Stay-IN-Play DUO Supplemental...
    view full answer...
    Image 1 for
  • Can I Flat Tow A 2020 Jeep Renegade Trailhawk
    I do have an option for you but the 2019 or 2020 models of the Jeep Renegade Trailhawk cannot be flat towed according to the owner's manual. The front wheel drive version of the Renegade can be towed on a tow dolly such as part # DM9713045. It has to be towed on the dolly with front wheel off the ground to avoid damage to the vehicle.The four -wheel drive version cannot be towed at all. You may consider a 2020 Jeep Wrangler or Gladiator instead.
    view full answer...
  • Troubleshooting Tow Bar Wiring Not Working After Install of Diode Kit
    Have you verified that the trailer wiring is working on your RV? You can use a circuit tester like part # PTW2993 to test all of the pins of the 7-way. Also make sure all of the wiring/connectors are seated properly as well. Basically you need to find where the trailer wiring is working and then work your way back from there to the taillights of your Jeep to see if you can find where the circuits stop working and fix as needed.
    view full answer...
  • Can Roadmaster Base Plate Kit for 2019 Jeep Cherokee be Towed with Blue Ox Tow Bar
    To use the Roadmaster base plate kit part # RM-521451-5 with a Blue Ox tow bar will require the adapter part # BX88185 as well.
    view full answer...
  • How to Connect Blue Ox Tow Bar to Roadmaster Direct-Connect Base Plates on 2019 Jeep Cherokee
    You can fit a Blue Ox tow bar to the Roadmaster Direct-Connect Base Plate Kit # RM-521451-5 on your 2019 Jeep Cherokee, but you'll need to use the Adapter Brackets # BX88185 as the drawbar pins between Blue Ox and Roadmaster are not interchangeable. The adapter brackets can be used with any of the Blue Ox motorhome-mounted tow bars. I have attached a review video of this for you to check out. For a complete flat towing setup you will need a base plate kit, tow bar, safety cables, vehicle...
    view full answer...

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