If you are looking for the most bang for the buck well this is it. An inexpensive powerful motor which produces pure brushless power at a much lower cost. This motors produce around around 20000 RPM with a 7.4V pack 24000 RPM at 9.6V and available in multiple Kv configurations including 2500 Kv / 2800 Kv / 3200 Kv. The motors are also include extra vent openings at the front casing to help cool the motor and prevent it from over hearings. This motor was designed for the Trex / Zoom / X-400 and other 400 Micro Helis.