PART OF THE FAMILY. Out there, a great adventure awaits. Riding a bike is the first step toward independence, and a bike is not just an object; it's a best friend, an older brother, a part of the family. From the 10" balance bike to the 26" bicycle, KTM Kids Bikes are reliable companions. For 2021, the entire range has been completely re-engineered. Lightweight aluminum frames, child-friendly components, and technical details tailored to a child's anatomy have been incorporated.