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Roadmaster EZ Base Plate Kit - Removable Arms

Roadmaster EZ Base Plate Kit - Removable Arms

Item # 521876-1
Our Price: $436.76
Base Plates

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Shipping Weight: 36 lbs
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Roadmaster EZ Base Plate Kit - Removable Arms Twist Lock Attachment 521876-1
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Roadmaster's EZ Twistlock series 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 521876-1 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster EZ Base Plate Kit - Removable Arms. Base Plates reviews from real customers.
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Roadmaster Base Plates - 521876-1

  • Removable Drawbars
  • Roadmaster
  • Twist Lock Attachment

Roadmaster's EZ Twistlock series 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.


  • Hidden bracket design provides improved aesthetics compared with standard brackets
  • Drawbars are easily removable - just twist and pull
    • No pins or clips required
  • 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 Quick Disconnects and all Roadmaster tow bars
  • Instructions and mounting hardware included
  • Made in the USA
  • Limited Lifetime Warranty

The drawbars, or front arms, on the EZ 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.

521876-1 Road Master EZ Base Plate Kit

Installation Details 521876-1 Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Roadmaster EZ Base Plate Kit - Removable Arms - 521876-1

Average Customer Rating:  4.9 out of 5 stars   (367 Customer Reviews)

Roadmaster's EZ Twistlock series 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.


Received the base plate and EZ removable crossbar for my 2002 Mini Cooper. Just finished the installation which was pretty difficult probably because there is not much clearance underneath the car. As much as I tried there was no way to install the included U bolts. I also had to trim the backing plates for the frame support (directions indicated that might happen) as well as about 1/8” from the tip of the two forward facing frame bolts in order to get the base plates mounted. Not fun mind you. The drivers side base plate fit perfectly once the trimming was completed. The passenger side was (or still is) a bear as the two rear bolt holes on the flat part of the base plate we off by about a 1/4”. I was able to finally get the forward most bolt installed but still need to open up the rear hole a tad bit more. I’ll tackle that later after all my cuts and scrapes heal. Hopefully, not using the U bolts won’t be an issue.

Mini Cooper

Base plate system and roadmaster tow bar work great, we have made 2 cross country trips towing our Mini Cooper and have not had any problems, would highly recommend it for trouble free travels.

2005 Mini Cooper

Installed on 2005 mini cooper convertible. Choose this base plate for our mini since it provided highest attachment height for tow bar (12 inches off ground, only requires 3 inch drop from back of RV), and attaches to mini frame more substantially that blue ox. Installation directions are nearly perfect, we had to widen holes on passenger side to line up with frame. Modification was approved by Roadmaster.


Worth the installation headache. Not really a headache just a little more work than originally thought. Easy install and removal.
Good buy.

2007 Mini Cooper S

Very well constructed. Fitting right side took some adjustment, I had to clearance the lower member hole in order to fit the bolt.
I installed the base plates myself, after the prospective mechanic claimed this was the incorrect fitment. Subsequent calls to Roadmaster produced a "No Fit" pronouncement, in spite of the lookup and even the printed instructions. Undaunted, I proceeded, and the fit was successful. YES, this DOES fit a 2007 Mini Cooper S Convertible.


Shipping was super fast and arrived without damage. I am not ready to install it yet but if it's like the roadmaster tow bar it should be high quality.


I had some questions prior to ordering, called in and the sales staff were very well informed. I received the hitch plates within 5 days. Took about 2 hours to install. Very pleased with everything.


Great product, price and service. Not the easiest to install. Only Roadmaster base plate that required that the bumper be trimmed but Minnie is very low to the ground.


Rock solid unit and works like a charm. Totally recommend it.

2004 Mini Cooper

The instructions were excellent as is the product quality. With very little effort I was able to install these on my Mini Cooper in less than 1 hour. With only my garage area (no lift) and minimal hand tools the installation was very easy and the end result looks and performs great.


Excellent and fast service!


I absolutely love my eTrailer purchase. Much better price than through any dealer. Directions were clear and easy to follow. And I did the installation all by myself. Thanks eTrailer.


Came as promised!


I will open the box when the rest of the delivery is compleat , please keep me updated, thank you




I was totally satisfied with the product and your customer service! Thanks for the follow up.


2005 Mini Cooper

2008 Mini Cooper


Review from a similar EZ in Base Plates

Installed myself with a help of a friend it’s easier with two people took about 31/2 hours instruction were a little off. my car was an SS which was a little differentt so you had to figure a couple things out
Make sure you order the fish cables to help you pull bolts through


Review from a similar EZ in Base Plates

Great installation instructions and video. Was an interesting and fun project installing in our Mini-Cooper


Review from a similar EZ in Base Plates

Parts came very quickly. The base plates are really well make and of heavy material. If you watch the video it is a breeze to install. Make sure you have some new clips for your bumper as the old ones will break, not all but some. I ordered clips from Amazon. I used a vibrating saw with cutting blade and it did nice job cutting plastic bumper cover.

They are the boss. So we’ll made.
William - 11/19/2021


Review from a similar EZ in Base Plates

Installed on 2014 GMC Acadia. Very sturdy and heavy duty base plate. I installed it myself. You will need a little automotive knowledge and more tools then the average do it yourself-er. It took about 6 hours, by myself. It looks more intimidating then it turned out to be. You can't see it when not in use which makes it nice for the wife, since it's her car.
Pictures show the tow bar adapter. Sorry, no pictures of adapter removed.

Douglas K - 04/08/2021


Review from a similar EZ in Base Plates

The Roadmaster EZ base plate kit for my Smart car was just that, EZ. The directions were straight forward and easy to follow. All went well and works great.

Show More Reviews

See what our Experts say about this Roadmaster Base Plates

  • Does Front Bumper Have to Come Off to Install Roadmaster Base Plate Kit # 521876-1
    The front fascia of the vehicle has to come off to install the Roadmaster base plate kit part # 521876-1 but the bumper itself does not have to come off.
    view full answer...
  • Tip for Aligning Bolt Holes of Base Plate Kit that Do Not Line Up Perfectly
    In situations like yours we recommend loosening all of the bolts that hold the base plate kit to the frame and then starting all of them individually before torquing any. This gives a bit more more wiggle room for the bolts to fit. Was the vehicle ever in an accident by chance?
    view full answer...
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  • Installation Tips For Installing Roadmaster EZ Baseplate # 521876-1 On A 2002 Mini Cooper
    I've attached the installation video for the Roadmaster EZ Base Plate Kit # 521876-1 below where Ryan will talk about cutting down the tip of the forward facing bolts about 1/8" at the 12 minute mark. At the 12:38 minute mark he'll show you how to install the U-bolts. These bolts are an essential part of the installation and I do not recommend towing your 2002 Mini Cooper until the U-bolts have been installed.
    view full answer...
  • Base Plate Recommendation For A 2006 Mini Cooper
    For your 2005 Mini Cooper. I recommend the Roadmaster EZ Base Plate Kit # 521876-1 so you can utilize the Roadmaster StowMaster Tow Bar # RM-501 you mention. This base plate is very easy to disconnect thanks to its EZ Twistlock series brackets, features a hidden bracket design when not in use retaining the factory asthetics of your 2006 Mini Cooper, and includes all the hardware needed for installation.
    view full answer...
  • Recommendation For Tow Bar Base Plates For 2003 Mini Cooper - Manual Transmission
    Regrettably, The Roadmaster EZ Base Plate Kit, Item # 521876-1, does not fit your 2003 Mini Cooper. The right base plates for your Mini are in the Blue Ox Base Plate Kit, Item # BX1303. Unfortunately, they will not work with your Roadmaster Stowmaster 5000 tow bar. If you are interested in changing to a tow bar that fits the Blue Ox base plates then I recommend the Blue Ox Acclaim Tow Bar, Item # BX4330. I am attaching some articles and a video to assist you. Please contact us if...
    view full answer...
  • Completing a Flat Tow Setup for a 2005 Mini Cooper When you Already Have a Tow Bar
    If you already have the Falcon 5250 tow bar and safety cables, the only remaining pieces you need are a base plate, wiring for lights, and a brake system. For your base plate, the one for your 2005 Mini Cooper that is compatible with the Falcon 5250 is the Roadmaster EZ Base Plate Kit, part # 521876-1. It has removeable arms and is compatible with all Roadmaster tow bars (like the Falcon). For the wiring (which is needed to power a brake system), you can use the Roadmaster Tail Light...
    view full answer...
  • Can a 2005 Mini Cooper with Manual Transmission be Flat Towed
    I have not heard of any problems regarding flat towing the 2005 Mini Cooper with a 5 or 6-speed manual transmission and the car is considered towable. however, you will need to consult the vehicle owners manual to determine the proper towing procedure for the car. There should be a towing section in the manual that covers whether or not it can be towed and if there are any specific requirements. If you find that it can be flat towed, there are 5 items you will need for a basic flat towing...
    view full answer...
  • How To Operate the Tail Lights of a 2008 Mini Cooper while Being Flat Towed Behind an RV
    For activating the tail lights of your 2008 Mini Cooper with your RV while the Mini is being flat-towed you will want to check out the FAQs I attached that detail how this is done. The process and installation will be the exact same as what you would need to do to install a diode kit on your vehicle. Basically, you will use a set of diodes installed in your vehicle to operate the tail lights of you vehicle with the tow bar wiring from your RV. This will not affect the functioning of your...
    view full answer...
  • Is Roadmaster Falcon All-Terrain Tow Bar a Good Option for a 2007 Mini Cooper Convertible
    The Roadmaster Falcon All Terrain, Non-Binding Tow Bar # RM-522 is a fanstastic option to use for flat towing your 2007 Mini Cooper Convertible. You just need the EZ Base Plate Kit # 521876-1 (which fits the Sport suspension but not the Aerodynamic Package) to connect to the tow bar. To finish out your towing setup I recommend the Combo Towing Kit # RM-9243-1 which gives you wiring, safety cables, and some locks and covers to preserve the life of your towing equipment, as well as the Brake...
    view full answer...
  • Needed Items for Flat Towing 2003 Mini Cooper
    To flat tow your 2003 Mini Cooper with your Roadmaster Falcon All Terrain, # RM-522, I suggest the Roadmaster EZ Base Plate Kit with removable arms, # 521876-1. The Roadmaster's EZ Twistlock series brackets are virtually invisible, easy to mount and simple to remove. These brackets install on your Mini Cooper's frame to provide attachment points for your tow bar. You will also need safety cables, I recommend straight cables # RM-645. You will also need a lighting solution, one of the...
    view full answer...
  • Parts Needed to Flat Tow 2005 Mini Cooper Convertible with Blue Ox Tow Bar
    For the 2005 Mini Cooper Convertible we have the Roadmaster base plate kit part # 521876-1 as a confirmed fit. For an adapter to allow a Blue Ox Alpha # BX7380 tow bar to attach you need the part # RM-032. For lighting you can use the diode kit, # RM-15267, and not have to worry about cutting into the taillight housing. This will splice into your taillight wiring to allow your tow vehicle to control the taillight assemblies of the towed vehicle. This comes with a round 6-way connector...
    view full answer...
  • How To Use Roadmaster Falcon Tow Bar On 2003 Mini Cooper
    In order to use a Roadmaster Falcon Tow Bar like the Falcon 2 part # RM-520 on a 2003 Mini Cooper you'll need the Roadmaster EZ Base Plate Kit part # 521876-1. The Roadmaster EZ Base Plate Kit will also fit a 2002 - 2006 Mini Cooper and a 2007 - 2008 Mini Cooper Convertible. I have attached a list of other parts you might need below as well. RoadMaster 68" Single Hook, Coiled Safety Cables part # RM-643 Roadmaster Tail Light Wiring Kit with Bulbs part # RM-155 Blue Ox Patriot Portable...
    view full answer...
  • Need Base Plates and Magnetic Tow Light Kit for 2007 Mini Cooper Convertible
    I reviewed an online copy of the owners manual for the 2007 Mini Cooper. Page 114 indicates that the manual transmission model may be flat towed (with the gear shift in neutral) but that the automatic transmission version cannot be flat-towed without causing transmission damage. The automatic must be towed with the front wheels up off the ground as with a tow dolly like RoadMaster # RM-2050-1. If your 2007 Mini Cooper convertible is a manual we offer Roadmaster Base Plates # 521876-1....
    view full answer...
  • Base Plate Kit Recommendation for a 2004 Mini Cooper S for Flat Towing
    The Roadmaster base plate kit # 521876-1 that you referenced has been confirmed to fit all models of the 2004 Mini Cooper so it will work well on your S model. It will also fit your Falcon Tow Bar part # RM-520 without the use of an additional adapter. The Optronics Magnetic Tow Lights # TL21RK would be a great option. You will also want the # 787196 to connect this wiring from your tow vehicle to the front of the towed vehicle. For safety cables you can use # RM-643. The coiled design...
    view full answer...
  • How To Flat Tow 2006 Mini S Convertible With Standard Transmission
    You asked about Blue Ox products, but for your Mini the parts were not compatible to your tow vehicle. To flat tow your 2006 Mini Cooper Convertible S model (with standard transmission) you will first need Roadmaster # 521876-1 base plates which are hidden well and have easy to use twist-lock mechanisms. Next you will need a compatible tow bar. I strongly recommend a non-binding tow bar because with it you will not need to have the vehicle and motorhome perfectly straight and level to...
    view full answer...
  • Is The Roadmaster Base Plate Compatible With Blue Ox Tow Bar On a 2003 Mini Cooper S?
    Yes, you can install the Roadmaster EZ Base Plate Kit # 521876-1 on your 2003 Mini Cooper S. This is a much stronger mount in my opinion also than the Blue Ox # BX1303. To use the Roadmaster base plate with your Blue Ox Tow Bar # BX4375 you will need a couple parts. First the base plate requires a Crossbar # 910021-00 to strengthen the front mounts and tie them together. Then you only need the Adapter # RO64FR that you can leave attached the crossbar. The Roadmaster Diode 7-Wire to 6-Wire...
    view full answer...
  • Parts Needed to Flat Tow a 2006 Mini Cooper S
    If you haven't already check your owner's manual and make sure there aren't any restrictions preventing your 2006 Mini Cooper S from being able to be flat towed. The Roadmaster Base Plate Kit # 521876-1 will fit your Mini as long as you have a convertible. If you have a hardtop then you'll need the Blue Ox Kit # BX1303. I suggest the Optronics Magnetic Tow Lights # TL21RK. These bypass the Mini's wiring completely and will provide a 4-way connector at the front. The lights then mount...
    view full answer...
  • Complete Flat Towing Setup For A 2005 Mini Cooper
    Yes! Along with the Roadmaster Tow Bar Quick Disconnect Kit # RM-201, you will have no issues using the Roadmaster Tracker Tow Bar # RM-020 with the Roadmaster EZ Base Plate Kit # 521876-1 on your 2005 Mini Cooper. If you're interested in a complete flat towing setup you're also going to need: -A braking system like the Brake Buddy Select 3 Portable Supplemental Braking System # HM39524. -A wiring kit like the Roadmaster Tail Light Wiring Kit w/ 7-Way to 6-Wire Connector # RM-152-LED-7. -Safety...
    view full answer...
  • Parts Needed to Flat Tow a 2006 Mini Cooper with a Blue Ox Base Plate Kit
    The Roadmaster Base Plate Kit that fits your 2006 Mini Cooper is a part # 521876-1 but from the picture you sent in it looks like you actually have the Blue Ox Base Plate Kit # BX1303 instead. If you are missing the pins then those can be found as part # BLU57XR on our site (this comes as a pair). You may want to make sure that the base plate kit itself doesn't need to be replaced though. The opening there looks a little rough so you may want to try sanding it and applying some Rustoleum....
    view full answer...
    Image 1 for
  • Parts Needed for Flat Towing a 2005 Mini Cooper 5 Speed Behind a Sprinter Class C Diesel Motorhome
    Thanks for all of the information and research on parts for flat towing your 2005 Mini Cooper behind your Siesta Sprinter diesel Class C motor home. You have most of the parts correct, but there are some specific items you will need for your Mini. First, you need to wire the dinghy so that the combined brake and turn signals on the motor home will activate both the brake and turn signals on your Mini. The brake pedal would activate the brake lights with the key in the position you describe,...
    view full answer...

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Info for this part was:

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Expert Research:
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