Originally Posted by MotorBicycleRacing
The cc limit in Oregon is 30 something cc's so a 48 cc would be oversize.
How is anyone going to know? There are plenty of high performance 50cc's that crank out way more power than a 50cc china girl. Go to a place that engraves pets tags and make a 48cc tag for it. I highly doubt some over-zealous police officer is going to make you remove the engine and tech inspect it for displacement.