The Mantra is our classic fixed-gear / single-speed bike. Also available in a 7-speed model, the Mantra comes standard with front and rear Promax brakes and machined sidewall rims. Now with dual braking, you have exponentially more control over your ride, your speed, and, of course, your stopping. The Mantra V2 also equipped with a flip-flop hub, which means you can ride your bike either as a fixed-gear or a single-speed with a freewheel.