The motor for the QS MOTOR QS205 V3T4 electric bicycle on 3 kw. Really 6-12 kilowatts. Top version with improved magnets and copper wire. There is a built-in temperature sensor. Weight 12.5 kg. Thick phase wires. Spotted set of front and rear wheel in aluminum rim 18 * 1.4 with tires 18 * 2.75 610 $. Details here. http://www.cnqsmotor.com/en/article_read/QS%20QSMOTOR%20350W%20-%203000%20Watt%20Peak%2014kW%20205%2050H%20V3%20Brushless%20DC%20electric%20bike%20ebike%20hub%20 /536.html There is also a powerful sine controller kelly7230s- at 205u.o QSMOTOR 138+ motor VOTOL EM 150SP controller last photo at 590USD