Oh ok i have a raptor 660 and i kno i has a fan in it. my brother has a 400ex and it doesnt have te fan so i guess it is air cooled like a banshee? i was gonna get a banshee then some one told me they needed to be cooled down and you couldnt ride them as long as a 2 stroke so i got the 4 stroke. ( always wanted the 2 stroke power lol)