If you mean a crf 150 then you have to be joking. I own a 2005 model yz 125 and have had it for about 6 mnths now. My next door neighbour owns a crf 150 and it is the most gutless motorbike i have ever riden. they are amost imposible to even get them on the back wheel. i have no problems with my yz. i race it at rum city motox club in bundaberg, QLD junior lites and it hammers. l8ers