"The 250 4 strokes are pretty high maintenence and need new pistons, valves, springs etc put in em pretty frequently. The piston is a pancake design without much skirt so any wear and they'll rock and blow the motor. If it were me I'd take these guys advice about getting a 250 2 stroke, the hondas,kawis, suz 250 bikes are close to 50hp stock and are light and are a blast to ride. "