For those looking for an alternative braking system on a folding bike, we've designed our Flexi 121D model in 3 new colors! Featuring a 1-1/8" aluminum magnetic frame, a rigid 1-1/8" steel magnetic fork, a Shimano Tourney TY200 rear derailleur, an RS36 3X7 shifter, and an aluminum mechanical disc brake system, the Flexi 121D is ideal for those always looking for a different style!