Most sensored brushless motors don't seem to come with wires attached. I had to learn to solder a brushless motor. I figure I'll post a "how to" for people like me.
60 watt or hotter irons work better. 30w-40w will make you doubt your skills. It's not your skills. They just get cooled too much every time you solder.
I used 14 gauge wires ($1.50 for 1m each). If you want to go smaller turn than 10.5t, thicker 12 gauge would be better. (Tamiya ESC's wires are 16 gauge, so... b