This motor is quick becoming my fav, it has top end speed because of the high kv, and low end torque because the bigger stator size, this motor rocks on 4s, but 5s puts a big smile on my face, Im rocking my mb epic 235 , naze rev 5, 2.5.3 BF, 30 amp little bees 14.4 bl heli, 5.45 race blend dal props, and mb 5s 1300, all which I sell in my store at www.multicopterbuilders.com