QS 205 V3 4000 motor is a good solution for 5kW continuous e-bike with top speed 80-90kph.
It is also well-known as Quanshun V3 or Cromotor.
Rear hub-motor QS 205 V3 is a perfect balanced solution for the high powered enduro e-bike with top speed 75-120kph.
Disc brake mount ISO 6 x 44mm
Freewheel mount 35mm thread.
Rear dropout size 150-170mm X 10мм.
Recommended rim 17-19 inch moto.
Windings - 3T22W
Stator - Aluminum alloy
Magnets - 46 pcs 50mm.
Phase cables AWG8 - 10mm2.
Holes for the spokes - 36pcs 4,2mm
Temp sensor (KTY83/122)
Recommended controller - 72-96V 50-100A
Rated power 4000W, Max power 10000W
Unloaded RPM (72v) - 750rpm
Motor type - BLDC 205/50 direct drive hub-motor