72V 4000 MTX39 Rim Ebike Rear Motor Wheel Conversion Kit 145mm 26'' 27.5'' 29''
72V 4000W 26" 27.5" 29" MTX39 Ebike Rear Motor Wheel Conversion Kits Dropout 145mm. 72V 4000W 26"/27.5"/29" MTX39 Rear Motor Wheel with Single Speed Freewheel ( Without Tire and Tube ). Dual Hall Sensor (One for spare use).