Trailer Hitch Adapter for M12x1.25

(22 customer reviews)

$ 25.00

Robert Axle Project’s M12x1.25 adapter for Kid Trailers and Cargo Trailers are designed specifically to fit your Rad Power bike or Mahle/EBIKEMOTION Equipped E-Bikes. and allow attachment of any hitch-mounted trailer. These Hitch Adapters fit any trailer that has two wheels and a single point of attachment to the axle. This includes all the two-wheeled child, pet and cargo trailers such as: Thule, Chariot, Burley, Instep, Carry Freedom, and many more.

If your bike has a 12mm thru axle we make thru axle adapters that you can find by using our Axle Finder here.

Purchase our Rad Power Bikes Hitch Adapter for your bike. Share your stoke for cycling with your kids. Simplify your life by allowing quick and secure attachment of your trailer to your best and favorite bike. Enjoy the adventure.

Get 20% Off Lightning Bolt-on Axles With Purchase of Any Trailer or Trainer Axle! Discount Automatically Applied.
SKU: ADA005 Categories: , , , , ,

Description

The adapter threads on to axles with an M12x1.25 thread.

The Robert Axle Project Trailer Hitch Adapter for Rad Power Bikes and Mahle/EBIKEMOTION Equipped E-Bikes. Our hitch adapter for towing kid trailers and single-arm bike trailers is high quality and precisely machined. This includes all the two-wheeled child, pet and cargo trailers such as: Thule, Chariot, Burley, Instep, Carry Freedom, and many more.

Our hitch adapter is made of stainless steel and is incredibly durable.  It’s built to handle towing a fully loaded bike trailer. The Robert Axle Project Hitch Adapter helps trailer hitches fit more bikes. It easily clears hooded dropouts and other interfering dropouts. It is easy to install. Simply replace the existing non-driveside nut with our adapter, and attach the hitch that came with your trailer.

Our hitch adapter uses a 17 mm wrench to attach your hitch and precious cargo more securely than with other knurled adapters. When installing the hitch, the 17 mm wrench isolates and protects dropouts from marring and over-tightening that could ruin your bike’s frame.

If your bike has a 12mm thru axle we make thru axle adapters that you can find by using our Axle Finder here.

At Robert Axle Project we believe in enhancing the role of bikes in your life’s adventures. Expanding our immensely thorough catalog of thru axles for trailers, racks, trainers, and more, helps us do that.

Additional information

Weight .3125 lbs

22 reviews for Trailer Hitch Adapter for M12x1.25

  1. Patrick Foy (verified owner)

    Fit the bike perfectly.

  2. Holden (verified owner)

    Super easy, cheap, gets the job done.
    Worked with our Cougar 2 Chariot, and worked with our RadWagon 4, as well as RadRunner

  3. Alex (verified owner)

    This may fit other ebikes (not just rad power bikes). It fits my Ride1Up 700 series perfectly.

    Got this to attach a PetSafe dog trailer and it has worked great!

  4. Randy Gillet (verified owner)

    Super easy installation and a perfect fit on the bike. We can now use our RAD e-bike to pull the trailer vice my old mountain bike.

  5. Jonathan H (verified owner)

    This was the perfect thing to allow me to pull my Thule Chariot Cross two seater kids trailer! I’m very happy, and the installation was quick, and it’s awesome to be able to pull my kids with my Rad Power Bikes Rad Rover 6 Plus.

  6. Dana Wright (verified owner)

    Perfect fit for my ebike to add my dog trailer to the bike.

  7. Christopher Taylor-Davies (verified owner)

    Saved my trailer purchase from being an expensive flop and set me off on a carless future! Superb.

  8. MG (verified owner)

    So glad I saw this on a Radpower bike forum, I was at a loss how to attach a pull behind kid trailer (in our case we were given an old thule chariot “cheetah”) to my new Radexpand5. It’s annoying that Radpower themselves can’t just recommend this piece, since it’s essential to using a trailer, but whatever, liabilty bs! Also the customer service was so great and item arrived really fast!

  9. Tom S

    Very well made and easy to install. I thought I wasn’t going to be able to attach my Burley to my new e-bike until I found this. Thank you!!

  10. Denney (verified owner)

    I don’t have much to add to the other positive reviews except that this is a very nice piece, singular construction. Very happy to be able to use the chariot trailer with our runner plus.

  11. Mackenzie (verified owner)

    Easy to install, works perfect! Hooked my Thule Chariot up to my RadWagon 4 with no issues!
    So glad to have found this!

  12. Linda Kiker

    Hello Project people. Thanks to your knowledgeable chat staff I was able to make sure that before I bought the axle adapter I’d be able to attach my new trailer to my new e-bike. Yes all new to me, so much appreciated. It went on easily and works great. It’s currently in place and hauling vegetable harvests to food pantries and other food relief organizations all over Denver.

  13. Armin (verified owner)

    Works perfectly on my RADExpand 5! Thank you for the fast shipping!

  14. Ryan Riley (verified owner)

    This is exactly what I needed to hook up my Schwinn Prescott kid trailer to my RadRunner 1. Thanks!

  15. Adam (verified owner)

    I was grateful to the site to ask the specific model of ebike and trailer. Maybe I was lucky to have stumbled onto the right part straight away, but in the shifting market I’m glad for something better than Amazon’s laissez Faire attitude toward holding vendors to task on fitment etc. The part was a perfect fit and overall quite affordable. No issues with the part, trailer, or bike. I’m able to take my 4 (!) kids out on a single ebike ride now. Thanks RAP!

  16. JoAnna

    I use this with my rad wagon 4 to pull an older style chariot. assembly was quick and simple. Only require a few simple tools that most people already have. Discrete when not in use. 10/10 recommend if you need a “functional” axle/quick release type substitute.

  17. Steve (verified owner)

    Just a slam dunk. This little piece is the trick. Fit perfect. A small price to pay for the solution to the trailer dilemma.

  18. Lori Conley (verified owner)

    Bought for my Rad Runner Plus. So easy to place. I attached my Aosom dog trailer to it and it fits perfectly and holds the trailer well and easy to ride. So glad I found this – the other options I read we’re much more expensive and labor intensive

  19. Jared (verified owner)

    Have a Ride1Up Core 5 and an Instep trailer and this adapter worked great. The bolt on the bike hub was longer than this product planned for so even with the the flat washer from the bike and the one provided with this product resulted in a loose setup. Easily fixed by going to Ace and getting a couple extra flat washers. Once those were on, everything was nice and snug. Have used it a handful of times and haven’t had any issues

  20. Ben

    This worked great for our Ride1Up LTD e-bike to attach a Thule Chariot hitch. (It was suggested by Ride1Up’s support; this site should advertise the compatibility more loudly!)

  21. Mark (verified owner)

    Perfect fit on a RadRunner2. Clear instructions, easy installation. Remarkably inexpensive for a very well designed and manufactured piece.

  22. Trevor (verified owner)

    Fit perfect. And fast delivery

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