This is the Great Planes Motor System for use with Park Flyers such as the Great Planes Fundango or other models which require a Speed 400, micro BEC ESC (not incl.), and 3:1 gear ratio. COMMENTS: NOTE: Instruction has a cross sell for the the C5 nano servos. THIS IS JUST A CROSS SELL. The C5 nano servos ARE NOT for the GP Fundango. Fundango uses mini servos such as CS35.