12mm Thru Axles for Kid Trailers & Cargo Trailers Kid trailers provide a great way to share your adventures with those you love. With our 12mm Thru Axles for Kid Trailers, you can attach a Burley Trailer, Thule Trailer or any brand of trailer to any bike with a rear 12mm thru axle—mountain, road, fat, … Continue reading Kid Trailers