These are some serious motors
The quality and design are A+. The motors seems completely repairable if needed, the cables are longer than typical, and the responsiveness is insane. These are super responsive and powerful motors and pull a lot of current fast. I had to turn down master multiplier to 0.5 and my d gains to 0.5 and scale the throttle to 85% to get about 1.5-2 mins of great flight with some beat up old batteries. I definitely suggest buying some fresh lipos to use these at their full potential. If you're not familiar with tuning go with a much lower KV or you're only going to get 30 seconds of flight.
NG