A friend of mine was looking for better motor options for his Dnano and stumbled upon this motor. When he installed it and ran at our LHS the motor was balistic!!! I mean easily twice if not three times as fast as stock. I was so impressed I bought a couple. I never seen the XP motor run but this thing kills. The motors are from ultralight balsa wood mini planes and they are the same size as the Dnano motors, drops right in. You just need to attach the connector and the best part is they are 6 dollars. Here is a link. the one you want to get is the 7mm 1.7ohm. http://www.skyhooks.ca/HFX900.htm#MNC-7-33PL