kawi 85 378 said:im about 5,5 to 5,6 and i ride a kx 100 its got enough power to keep up with a 250 so look in to that and if you want a used one they are pretty cheap in good condition plus they love to rev
gwcrim said:IMO, the biggest difference is that the KX and RMs have a power valve for the exhaust. That helps smooth out power delivery. Other than that, you'd have to be a verrrry serious rider to notice any difference.