Ranging from the LXS to the L100, the Legion series of bikes offers everything a BMX rider could need from your first true BMX bike in the L18 to a fully park, street and dirt worthy machine in the L100. The Legion L100 features full chromoly frame (21" top tube) with removable brake mounts and chromoly fork, 2-piece chromoly crank, and 2.4" tires on wide aluminum double-wall 36H rims.
Mongoose® has infused over 40 years of experience along with feedback and insights from our pro riders to develop the best line of Legion bikes yet.
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.