... battery , available with disc brake and six speed gear freewheel QD-S001B electric bicycle kitThe kit we supply including the following ... : 36V 24V 250W , 36v 250w/350w brushless geared motorWheel size: 20",22",24”,26"/ 28"2, 1pcs Motor controller: 1:1 ... indicator8, battery holder Top speed: 25km/hPacking in carton: 200sets/20"GP container; 400sets/40"GP container; 421sets/40HQ containerGross Weight ...