12mm Thru Axle for Kid Trailer

(7 customer reviews)

$ 65.00

Robert Axles for Kid Trailers are designed specifically to fit your 12mm thru-axle bike and allow attachment of any hitch-mounted trailer. These 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.

Purchase our Kid Trailer axle 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.

In stock

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SKU: KID206 Category:


Since 2013, we have been an important part of cyclists’ adventures all over the world. Our axles have millions of miles on them in mountain bikes and road bikes, carbon bikes, fat bikes and e-bikes. Our axles are specifically designed to handle the high-torque loads generated by e-bikes.

Your stock thru-axle is not strong enough to haul your precious cargo! Our axles are 3 to 4 times stronger than the stock axle that came with your bike. Our stainless steel axle ends provide a safe and secure attachment point of the hitch to the axle. The axle is quick to install and remove with a common 5mm hex key.

Our axles are not just designed in the USA, but are made here as well. They are machined by avid cyclists to the tightest standards in the industry. We safety test, to failure, every batch of axles we produce to ensure they exceed your expectations.

Prop65 Warning icon

WARNING: This product can expose you to chemicals including nickel acetate, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.


Robert Axle for Kid Trailers replaces your stock thru-axle so you can attach a child or cargo trailer to your 12 mm thru axle equipped bike.

  • This axle is compatible with Burley, Carry Freedom, Chariot/Thule, Croozer, Instep, and many more hitch style trailers.
  • The true length of the axle shaft is 209 mm. Please note: Thru-axle lengths do not equal hub standards. An axle has to be longer than the hub to fit in the frame. A 12×177 hub does not equal a 177 mm long axle.
  • This axle has a 1.5 mm thread pitch.
  • The axle shaft and axle end are precision CNC machined.
  • The axle shaft is 7075 aluminum and hard black anodized for rugged durability.
  • The axle end is stainless steel, which allow for mounting of the hitch provided with your trailer. The threads are M10x1 (metric).
  • Hardware for attachment of the hitch is included; the hitch is not.
  • No special tools required. Design allows for installation or wheel removal using your standard 5mm hex wrench.
  • Designed, built and quality tested in the USA. Proven around the world.


Need more information about how our axles work?

7 reviews for 12mm Thru Axle for Kid Trailer

  1. Russ (verified owner)

    Perfect fit and ease of install makes this a great attachment!

  2. Doig (verified owner)

    Fits my 2015 salsa beargrease and chariot cougar 2 perfectly. Super solid, high quality. I will be getting more for my other bikes.

  3. Bobby Hurt (verified owner)

    High quality product! I wish it was cheaper but such is life I suppose. Threads seem like they will last and the fit process was perfect for my fat bike. Hooking up trailer is as easy as it can be and the fit is perfect.

  4. Brandon (verified owner)

    It works just as designed on my Salsa Mukluk Ti with 177mm x 12mm rear spacing and alternator dropouts. The axle ends are beefy and a 5mm hex key allows for quick removal. Solid, quality product made domestically.

  5. Garret (verified owner)

    Quality axle and outstanding support. Used to attach a Burley trailer to a 2021 Rocky Mountain Blizzard fat bike.

  6. Ashelee Bohnert

    Perfect fit for my hub/ bike and trailer. Well designed and beefy enough to hold up to some decent trails.

  7. Jonathon D. Hackett (verified owner)

    So far the axle has worked with my 2017 Salsa Beargrease and the child trailer I pull.

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