well to tell you the truth 2 stroke all the way i rode 125 's and 250' s in the 90's same class as carey hart when we were in the intermediate class . but had to grow up dad moved to arkansas and i didnt want to leave vegas so racing came to an end and job hunting began . the only 4 stroker ive riden is a yfz400 when they came out but to tell you the truth before i got my raptor i still rode a 2 stroke rm 250 . no four stroke can give you an adrenaline rush like a 2 stroke . just my opinion .