... noise, high torque 3 Excellent performance charac Electric Bike Conversion Kit : 1 Long working life (>10, 000 hours) 2 Low ... (>80%) 5 High reliability 6 CE, EN certification support The kit includes motorized wheel, motor controller, speed throttle, power break lever ... , or 135mm rear fork spacing Double wall rim special for e-bike Motor Specifications: 36Vdc/500W/320rpm or 48V/1000W/430rpmQuiet ...