yup, the quality just isn't there in those cheap knock offs. plus, they may be $300, but you're gonna need another $250 at least to ship it. with that much money you can almost buy a used honda and beat the crap out of it. xr/crf 50's don't break, period. my old 50 spent probably 90% of it's time on the back wheel, never had ANY problems. my old nieghbor had a cheap knock off, broke at least once a day, if he could keep it running.