With great difficulty - there´s no torque lo down so you have to nail it at high revs in a lo gear - easy to back flip because the power delivery is frantic. So far I´ve only managed in 1st gear - v unstable. Prob easier in 2nd to ping the clutch at @ 10000 revs. I´m sure that there are some more accomplished mono-wheelers who could do it with ease though. If you try - cover the rear brake - you´ll need it!