When paired with the correct speed control and the right power source, these things can really fly. Under 5s conditions alone they are fine, but when paired with printed flywheels the set up will make a lot of noise and vibration. Not a fault of the motor. Recommend getting machined flywheels for such a set up.
Running these in dual stage at max power pushed my build up to 260fps.
I received everything ordered in plenty of time for Christmas. Great service. I will definitely use again.