For those looking for a Shimano MT200 hydraulic disc brake system in a folding bike, we've designed our Flexi 121HD model in 3 new colors! Featuring a 1-1/8" aluminum magnetic frame, a rigid 1-1/8" steel magnetic fork, the Shimano Tourney system, and the MT200 hydraulic disc brake system, the Flexi 121HD is ideal for those always looking for a different style. With 21-speed synchronization, we've made it easy to climb hills. We've also made it ready to become a stylish part of your daily commute.