Part:Wheel Motor:Brushless Hub Motor Wattage:250 350 500 750 1000w Voltage:36V / 48V Certification:CE UL ROHS Open size:100mm Front / 135mm rear Controller:Intelligent Brushless Wheel size:20 -28 700c Spoke Specification:12G/13G PAS:1:1 Intelligent Pedal Assistant System Weight:12kgs Show More