Introducing Aventon's new foldable ebike - the Sinch! Aventon'sfirst folding fat tire ebike Sinch launched on February 5th. Folding ebikes have come a long way from the past and they are here to stay. If you are not sure what makes the Aventon Sinch folding ebike so special and unique, read on to know the reasons why it stands above all other folding ebike currently in the market.