The KOS line has grown this year. Originally ridden by Mongoose® Factory Team Rider Jeff “KOS” Kosmala during his glory days in the 1980s, the KOS has plenty of old-school style and special components designed specifically for it. This year we've added a special Signature model and the 24" Kid Kruiser.
BMX Size Guide
Use the top tube length found in the geometry chart below, to help you figure out which Mongoose BMX bike is best for you. Keep in mind, experience, riding style and preference must be taken into account as well.