... wheel 3)Packaging detail:carton front wheel motor 500W The kit includes motor,controller,lithium battery,motorized wheel,speed throttle,disc ... brake,speeedometer,senor E-bike conversion kit -- Front(Disc brake available) or ... '',24'',26''or 28'' (700C) front/rearSuitable bike frame100mm front fork or 135mm rear fork spacingThrottleTwist intelligent ...