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  1. Tow Bar Base Plate
  2. Roadmaster
  3. Removable Draw Bars
  4. Twist Lock Attachment
  5. Completely Hidden
THIS ITEM IS NOT A FIT FOR
2006 Honda Element
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Roadmaster

Roadmaster EZ Base Plate Kit - Removable Arms

Part Number: 521877-1
In Stock
$575.00
Retail:$632.50
You Save: $57.50
Tow Bar Base Plate
Not Confirmed to Fit

2006 Honda Element

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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. Great Prices for the best tow bar base plate from Roadmaster. Roadmaster EZ Base Plate Kit - Removable Arms part number 521877-1 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (492)
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Roadmaster Tow Bar Base Plate - 521877-1

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • Ready for Flat Towing: Creates secure frame-mounted points for attaching your tow bar to your RV.
  • Blends In When Not Towing: Hidden bracket design leaves a clean, factory look when arms are removed.
  • Fast Hookup and Removal: Twist-lock arms install or detach with a simple twist—no pins or clips needed.
  • Built to Last: Computer-cut, all-steel construction with black powder coat resists corrosion and wear.
  • Simple, No-Weld Install: Mounts directly to the frame with included hardware and instructions.
Made in USA

Features to know about

Built for a Clean Front End: Hidden Design with Removable Drawbars

When you’re not towing, you’ll hardly notice this setup up front. The hidden bracket design keeps the look clean, with no visible crossbar or bulky metal sticking out. Once the drawbars are removed, the remaining brackets sit tucked within the grille where they’re protected from scrapes and scuffs. It’s a simple way to keep things looking sharp while still ready to tow at a moment’s notice.

Hook Up Fast and Confidently: Twist-Lock, No-Pin Connection

Each drawbar inserts into the bracket and locks in place with a quick twist—no pins or clips required. When it’s time to disconnect, just twist again and pull them free. It’s an easy system that makes connecting the tow bar quick whether you’re in your driveway or on the road. The Twist Lock Attachment keeps everything secure without fumbling for hardware.

Made to Last: All-Steel Construction with Powder Coat Finish

The brackets are computer-cut from all-steel for strength you can rely on through years of towing. A black powder coat finish resists corrosion and keeps them looking good even after long stretches on the highway. The design bolts directly to the frame for solid, reinforced attachment points that spread towing forces evenly across your front end.

Simple DIY Setup: Bolt-On Mounting with No Welding Required

This kit comes ready for a straightforward installation—no welding needed. It mounts directly to existing frame points using the included instructions and hardware. The custom design ensures a precise fit for your vehicle, so alignment is straightforward, and everything bolts up cleanly for a solid weekend project you can tackle yourself.

Ready to Integrate: Works with Roadmaster Tow Bars and Quick Disconnects

Compatibility isn’t an issue here. The EZ Base Plate Kit works with all Roadmaster tow bars and Quick Disconnects, so you can easily pair it with an existing setup or build your own complete flat-towing system step by step.

Specs

Construction and Design

  • Bracket design: Hidden bracket design provides improved aesthetics compared with standard brackets
  • Drawbar mechanism: Drawbars are easily removable - just twist and pull
  • Locking method: No pins or clips required
  • Material: Computer-cut, all-steel construction provides exceptional strength
  • Finish: Black powder coat finish is durable and corrosion resistant
  • Installation: Simple installation - no welding required
  • Fitment: Custom base plates ensure a perfect fit for your vehicle
  • Compatibility: Compatible with Quick Disconnects and all Roadmaster tow bars
  • Included items: Instructions and mounting hardware included
  • Country of origin: Made in the USA
  • Warranty: Limited Lifetime Warranty

Features

  • Removable arms: The drawbars, or front arms, are supremely easy to mount and remove – insert and twist to lock; twist and pull to remove
  • Aesthetic integration: Once the drawbars are removed, the remaining brackets are virtually invisible
  • Protection placement: Brackets typically mount within the grille for concealment and protection from scrapes and scuffs

521877-1 Road Master EZ Base Plate Kit

Installation Details 521877-1 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.8

492 reviews
Review sort icon
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.

by:

Purchased the towing adapter for my GMC Terrain a few week ago, received it on time & boxed not damaged. Watched the videos’ about three time on how to do it myself and started one evening and finished it the next morning about three hours with Beer Breaks, LoL. All the parts fix perfectly, had no problems with any of the parts, Product is real sturdy and if you don’t know where to look at the bumper you will not see the hide away receiver brackets. Very nice product, do it yourself and save
Up loading two photos if it will let me one is with hide away brackets installed and the other one you can see is my complete tow bar attached to the hide away brackets



by:

easy to follow instructions, took about 3 hours to install. paper template for holes in facia would be great .



by:

Seems like a very well-made sturdy product. Instructions were good however the holes did not quite lineup like they were supposed to so I had to do some mild to moderate modification. I like the way it looks without the towbar on the base plate. It’s fairly well hidden.



by:

The baseplate fit perfectly and the video was very helpful



by:

Thanks for being a great knowledgeable person about this tow set up. It fit perfect and the directions made it a no brainer



by:

Installed without a hitch! Matches up perfectly with the Roadmaster Stowmaster towbar we already had. Beautiful!



by:

Many reviews for this base plate said they could not hook up the U bolts. I had no problem using the U bolts. I did not tighten any bolts until I had them all in place. Then, I tightened all the nuts and bolts. I marked them with paint so I could see if any of them backed off. After a year, all of them are still tight. We towed our mini 4,000 miles in the first year.



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Easy to order, good support



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As listed. Great customer support



by:

Everything delivered even faster than expected - Thank you.



by:

works great easy hook up



by:

It is great and is going to work, Haven't got around to installing it yet, but looks like it is going to be easy. Thanks Dale



by:

Great product went in easy. The pictures on the directions need to be clearer, but all in all great product

Jenny N. profile picture

Jenny N.

3/10/2022

I recommend viewing our video installation on a 2010 Mini Cooper.



by:

Product was shipped quickly... great customer service!!!



by:

Fit perfectly and the directions were spot on. Took me about 3 hours not including the wiring of my Mini Cooper. That took me an hour and a half.



by:

Great quality products,shipped quickly,reasonable prices.



by:

Installation instructions were very good



by:

It was a long wait but no fault of e-trailer. The Roadmaster base plate fit perfectly. Thank you to Gwendolyn and Bay for all of your help!
Len Grill



by:

Put this base plate on my 2008 Mini Cooper S over the weekend. Took about 5 hours including adding the Roadmaster tail light kit. Instructions were great and also the videos on the site helped as well. This can easliy be done by one person with the right tools!!
Great Products! Thanks



by:

1185-1 does this part come in the box #521877-1 or do I still need to order it to complete the installation have not looked in the box yet. And before I install I want to have all the parts



by:

Was pretty easy to install once you deal with the Plastic Rivet Retaining Clips. It's probably a good idea to have some spare clips available as they are pretty easy to break while removing.

eTrailer offered the best price and shipping was free and fast.



by:

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


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See what our Experts say about this Roadmaster Tow Bar Base Plate

  • Parts Needed To Connect Roadmaster EZ Base Plate Kit 521877-1 To A Tow Bar
    Hey Wanda, thanks for reaching out. We have just the thing! To connect your Roadmaster EZ Base Plate Kit # 521877-1 to a tow bar you will need the following: - Replacement Quick Disconnect Crossbar Assembly for Roadmaster Tow Bars # 910021-00 This will be compatible with any Roadmaster brand tow bar. Do you already have a tow bar? Which one? Are you needing any other parts for your flat tow setup?
    view full answer...
  • Parts Needed To Flat Tow a 2008 Mini Cooper S with Sport Suspension
    Hey, Trevor. Happy to help out here. We do carry all the parts you need to be able to flat tow your 2008 Mini Cooper S, especially with the Sport Suspension. I reached out to Roadmaster just to make sure of the baseplate fitment. I'll list all the parts below for you. Roadmaster EZ Base Plate Kit Part # 521876-1 etrailer XHD Non-Binding Tow Bar Part # e64ZR Roadmaster Bulb and Socket Tail Light Wiring Kit Part # RM-155 I know most people don't use a braking system when flat towing a...
    view full answer...
  • Needed Items to Flat Tow 2007 Mini Cooper S hardtop with Sport Suspension
    At present there is only one option available for the 2007 Mini Cooper Hardtop S Model, the Roadmaster EZ Base Plate Kit, # 521877-1; this is confirmed to fit your vehicle. For a tow bar, I suggest the Roadmaster Falcon 2 Tow Bar, # RM-520. This hitch-mounted tow bar has stainless steel, telescoping arms that automatically lock into place. Its large hookup radius allows you to connect without perfectly lining up your vehicle. Easily folds up to store on your RV. You will need safety cables,...
    view full answer...
  • Parts Needed to Flat Tow 2008 Mini Cooper Hardtop S
    For a Roadmaster base plate kit that is compatible with your 2008 Mini Cooper Hardtop S and your Nighthawk tow bar part # RM-676 you'd want the Roadmaster EZ part # 521877-1. For lighting you can use the diode kit, # RM-152, 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 that you will install on the front...
    view full answer...
  • Flat Towing Base Plates for a 2010 Mini Cooper S Hartop
    I reached out to Blue Ox and there is not a confirmed fit for your 2010 Mini Cooper S Hardtop, but I do have a solution for you. I recommend the Roadmaster EZ Base Plate Kit - Removable Arms # 521877-1 which is confirmed to fit your Model S Hardtop. Then I recommend the Roadmaster Falcon 2 # RM-520 for your tow bar and # RM-643 for your safety cables. You can use the plugs # RM-210 when not in use if desired. For your wiring, I recommend the Roadmaster LED Bulb and Socket Kit # RM-152-LED....
    view full answer...
  • Tow Bar for Flat Tow Mini Cooper 2600 Pounds
    To flat tow your 2010 Mini Cooper Convertible S model you will first need Roadmaster # 521877-1 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 hook up or disconnect. If you ever had to fight with a tow bar because it bound up then you know how much of a pain, literally and figuratively,...
    view full answer...
  • Parts Needed to Flat Tow 2009 Mini Cooper S Clubman Behind an RV
    Flat towing a vehicle requires a number of components including the tow bar, base plates, a wiring/lighting kit of some kind, safety cables, a high/low hitch adapter and a braking system for the towed car. All of these items are detailed in the linked article on flat towing, which is a great place to start your preparation. Additional articles are linked too. Our installers really like Blue Ox products but Roadmaster makes quality products too. Blue Ox base plate # BX1307 fits your Mini...
    view full answer...
  • Recommended Baseplate For A 2008 Mini 2-Door Hardtop
    Hey John, If you have a 2008 Mini Cooper hardtop S-model or 2008 Mini Clubman hardtop then you'll need the Roadmaster # 521877-1. This will work with Aerodynamic Package, but not with Sport suspension. If you have a 2008 Mini Cooper hardtop base model then you'll need the Roadmaster # 521878-1. This does not fit models with Aerodynamic Package or Sport suspension. If you haven't picked out the rest of your flat towing setup then I have the following recommendations for you: Tow Bar:...
    view full answer...
  • Best Base Plate and Flat Towing Set Up for a 2008 Mini Cooper S
    We do have a baseplate that will fit for your 2007 Mini Cooper S, however the Blue Ox item # BX1304 you mentioned will not fit. You will need the Roadmaster EZ Base Plate Kit item # 521877-1 which is confirmed to fit your 2008 Mini Cooper S. I have linked an installation video below. Along with these base plates, there are a number of other parts that will be needed so you can flat tow your Mini Cooper S. I have listed them below and linked some review and installation videos as well....
    view full answer...
  • Recommended Flat Towing Components For A 2010 Mini Cooper S
    While there isn't a complete all-in-one kit I can still list all the parts you'll need to flat tow your 2010 Mini Cooper S: Tow Bar: etrailer SD Non-Binding Tow Bar # e44ZR. This tow bar is compatible with the baseplates you'll need and comes with safety cables included so that you don't have to purchase them separately. Baseplate: Roadmaster EZ Base Plate Kit # 521877-1 (note: not compatible with Sport suspension or John Cooper Works). Tow Bar Wiring Kit: Roadmaster Tail Light Wiring...
    view full answer...
  • Needed Items to Flat Tow 2007 Mini Cooper
    For a 2007 Mini Cooper S Model, there is only one option, the Roadmaster EZ Base Plate Kit, # 521877-1. For a tow bar, I suggest the Roadmaster Falcon 2, # RM-520. This hitch-mounted tow bar has stainless steel, telescoping arms that automatically lock into place and its large hookup radius allows you to connect without the need to perfectly line up your vehicle; this makes connecting and disconnecting so much easier. You will need safety cables, I recommend the Roadmaster 80" Coiled...
    view full answer...
  • Parts Needed to Flat Tow a 2007 Mini Cooper S hardtop with Sport Suspension Behind an RV
    Since your 2007 Mini Cooper S hardtop has the adjustable sport suspension I recommend using Blue Ox base plates # BX1307. I have linked a video showing an example installation for you. For a compatible tow bar I recommend the Alpha, # BX7380. This tow bar also includes safety cables so you will not have to purchase any separately. I have linked a video review of this tow bar for you. For lighting you can use a simple magnetic kit, such as # RM-2120. Or, for a more permanent solution you...
    view full answer...
  • Recommended Tow Bar for 2010 Mini Cooper
    The best tow bar is going to depend partially on the base plates you have for your 2010 Mini Cooper hardtop S model. The only confirmed fit we have is the Roadmaster EZ # 521877-1, and if you have the same base plate kit the tow bar I recommend is the Roadmaster Falcon 2 # RM-520. This is a high quality bar that is very popular due to how easy it makes the connection between the tow car and dinghy. A look at the customer reviews of this tow bar is also telling and speaks to the Falcon 2's...
    view full answer...
    Image 1 for Image 2 for
  • Parts Needed For Flat Towing a 2009 Mini Cooper S Hardtop
    The Roadmaster EZ Base Plate Kit # 521877-1 is our only base plate which fits the 2009 Mini Cooper S hardtop. It will not fit with the sport suspension or John Cooper Works options. This will connect to your tow vehicle using the Roadmaster Nighthawk All-Terrain Tow Bar # RM-676 and Crossbar # 910021-00. You may need one of the High-Low adapters to keep the tow bars within 3" of level from vehicle to vehicle. We have a 4" # RM-048-4, 6" # RM-048-6 and 8" # RM-048-8 option to keep the bar...
    view full answer...
  • Base Plates Compatible with 2008 Mini Cooper S Hard Top
    For your 2008 Mini Cooper S hard top, the Blue Ox Base Plate Kit # BX1303 is not the correct fit. It is only designed for 2002-2006 Mini Cooper hard top and 2007-2008 Mini Cooper convertible models. Blue Ox does not have a compatible base plate for your S hard top but I do have a solution for you. The Roadmaster EZ Base Plate Kit - Removable Arms # 521877-1 will work with the aerodynamic package but not the sport package on your 2008 Mini Cooper S hard top. If you have a Blue Ox...
    view full answer...
  • Parts Needed to Flat Tow 2009 Mini Cooper S56
    According to the owner's manual for the 2009 Mini Cooper it can be flat towed. There are a number of parts you're going to need in order to do this, starting with compatible base plates. I recommend the Roadmaster EZ Base Plate Kit # 521877-1, which will work with S models of the Mini Cooper so long as it does not have the Sport suspension or John Cooper Works. For a tow bar I recommend going with the Roadmaster Falcon 2 Tow Bar # RM-520; you will also need safety chains # RM-643. For...
    view full answer...
  • Base Plate Kit for Flat Towing a 2008 Mini Cooper S
    As long as you have the Aerodynamic Package and not the Sport suspension you can use the Roadmaster EZ Base Plate Kit # 521877-1. If you do have the Sport suspension then from what I can see you'll need to use a tow dolly like the Demco Kar Kaddy SS # DM9713045. For a complete flat towing setup you will need a base plate kit, tow bar, safety cables, vehicle tow bar wiring, a supplemental braking system, and possibly a high-low adapter. If you do not have all of these components just let...
    view full answer...
  • Recommended Complete Flat Tow System For 2010 Mini Cooper Clubman S
    The only base plates compatible with your 2010 Mini Clubman and the Stormaster towbar # RM-501 are the Roadmaster EZ Base Plate Kit - Removable Arms # 521877-1. If you need safety cables, I recommend the RoadMaster 68" Single Hook, Coiled Safety Cables - 6,000 lbs # RM-643 to go with this combination. I recommend using Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube # LT37420 to install the base plates. For your tow bar wiring, I recommend the Roadmaster...
    view full answer...
  • Roadmaster EZ Base Plate Fit for 2008 Mini Cooper S Hatchback
    The Roadmaster EZ Base Plate Kit - Removable Arms, # 521877-1, is a confirmed fit to the 2008 Mini Cooper hardtop S unless it has the sport suspension. The Blue Ox # BX1304 is a fit for the Hardtop Base model, and wouldn't work with S models. In addition to the base plates, you'll also need a tow bar, safety cables, a vehicle wiring harness, a supplemental braking system and possibly a high/low adapter if the 15.5 inch installed height of the # 521877-1 has a greater than 3 inch height...
    view full answer...
  • Does Grille Need to be Trimmed to Mount Base Plate in 2008 Mini Cooper S Hardtop
    While it doesn't need to be drilled, the lower front grille of your 2008 Mini Cooper S Hardtop does need to be trimmed in order to install the base plates that fit (unless you have the Sport suspension), which are the following part number: - Roadmaster EZ Base Plate Kit # 521877-1 This is necessary in order to allow the arms to protrude so the tow bar has a place to attach. Along with the base plates, the rest of the flat tow set up for your '08 Mini Cooper S Hardtop consists of the...
    view full answer...
    Image 1 for
  • Adapters to Connect Blue Ox Tow Bar with Roadmaster EZ Baseplate Kit
    To connect the Blue Ox Alpha tow bar with the Roadmaster EZ base plate kit, part # 521877-1, on your Mini use the Roadmaster # RM-032 adapter. It comes with the pins that run through the tangs to connect the tow bar to it. You probalby already have the pins with your tow bar but maybe not.
    view full answer...
  • Equipment Needed to Flat Tow 2009 Mini Clubman
    If your Mini Cooper Clubman has an automatic transmission, it cannot be flat towed. If it's a John Cooper Works edition, there isn't a base plate available. In either case, you would need to use a tow dolly like the Roadmaster # RM-2050-1. If it has a manual transmission it can be flat towed with the addition of a tow bar, base plates, safety cables, a wiring solution, a supplemental braking system and possibly a high/low adapter if the height difference between the receiver on the motorhome...
    view full answer...
  • Base Plate Kit that Fits 2009 Mini Cooper S Towed with Blue Ox Tow Bar
    If your Mini Cooper S model is a convertible we have the base plate kit part # BX1307 that is a fit but if you have a hardtop S model we do not have a Blue Ox base plate that fits although we have a Roadmaster part # 521877-1 which you could use with a Blue Ox base plate kit if you had the correct adapter # RM-032 and you'd be set.
    view full answer...
  • Installation Videos For Base Plate On 2007 Mini Cooper
    Hey William, thanks for reaching out. We haven't had the chance to shoot a video for the # BX1304 base plate yet, but we do have videos showing other base plates being installed on a Mini Cooper. We have one for the Blue Ox # BX1303 base plate which is for convertible models. We also have one for the Roadmaster # 521877-1 which is for hard top models. So not exactly the same as the # BX1304, but the process is still fairly similar, so it should still give you a pretty good idea of what...
    view full answer...


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