1:bikes with a crank drive motor 2:Lithium battery, 36V/12Ah 3:Alloy frame 4:Shimano ... for front and rear.ChargerAC 110-240V, smart charger.Main components: Frame6061# Aluminum alloy,light weight.Front forkAluminum alloy suspension, from ... , comfortable.BrakeFront Shimano Disc , Rear Tektro V(Tektro Novela available)Brake leverAluminum alloy, cut-off when braking.TiresKENDA brand, 26"x1 ...