To make sure a kids bike trailer can be connected to your bike, it’s important to check how the trailer attaches. Most trailers use a standard hitch (coupling) that connects to the rear axle of your bike.
✔ When does it work directly?
For many standard bikes with a quick-release axle, the included hitch can be connected directly without any additional parts.
✔ When do I need an adapter?
You may need an additional part if your bike has:
A thru-axle (solid axle) instead of a quick-release
An e-bike setup
A specific frame or brake design
In these cases, you typically need a special thru-axle with an adapter for the trailer hitch.
👉 To find the correct axle for your bike, you can use this tool:
https://robertaxleproject.com/
Simply enter your bike details, and it will show you the correct axle. You can then order one that matches those specifications.
✔ How is the trailer connected?
Attach the hitch to your bike’s rear axle (or adapter axle).
Connect the trailer arm to the hitch.
Secure it with the locking pin and safety strap.