... option8:waterpoof 9:powerful designElectric bicycle kits covers:1) A:motor with doublewall rim DC 36V, 150W, 250W, 300W; DC 48V ... , 150W, 350W, 500W. front and rear wheel motor are both available (100mm and 135mm for forks) for bolted ... 9) Easy to understand 10) Connect the wire with same color11) 2m lever of front motor, handgrip, brake lever12) More options to ...