Great Power Energy Saving Double-speed BLDC E-bicycle Hub Motor

New XD Double-speed Motor is coming...   The main features of the two -speed motor: a.small volume(max diametre is 132mm); b.big torque,and climbing ability; c.high effeciency(Big torque, low current ); d.when installed the gearshift systerm(freewheel),the speed will be twice as     fast as the original speed.  Front motor :     Rear motor:       characteristics One motor with two reduction ratios,torque at climbing is 1.82 times of torque at cruising. Amazing climbing performance. Three types of riding model, high-speed, low-speed and automatic.changing according to the road conditions. Motor, battery and controller is working under a low electric current status,  all parts will works longer.