A quick word of warning. If you ordered a 1512 1800 motor, be careful when you first hook it up. I wired mine up to a MMPro with the wires wired correctly to the corresponding wires on the ESC (white to white, red to red, black to black) and it runs backwards! It is easy to fix but it might be an unwelcome surprise for someone who puts it in at the last minute before going out to race a qualifier.