there very good for the money plus there are not loud at all and smooth on the gears and yes there are 9 turn its just as fast as my mamba castle 4600kv motor i would have 10 of them if i had the money . how much did it cost you for the combo they are so smooth and so quite mate i got the 5.5 turn that no quite at all but i think that to do with the b4 . and the 9turn is a smooth as a new born baby
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