PART OF THE FAMILY. Out there, a great adventure awaits. Riding a bike is the first step towards independence, and the bicycle is not just an object but a best friend, a big brother, a part of the family. From the 10" balance bike to the 26" bike, KTM Kids Bikes are reliable companions. The entire range has been completely redesigned for 2021. Lightweight aluminum frames, child-friendly components, and technical features tailored to the anatomy of children are utilized.