Thanks guys.Hard hard call.........The little turd was super mean for a bone stock 125 before I tore it down.I'm torn between going back stock or big bore.I hope Mike will go into detail on the before and after fun factor.

Does anyone have a spare five gallon steel bucket I can use as a new jug for the YZ465 piston?I wonder if that 465 piston would make it shake the grips.......?I'll need a cheater pipe for my little kick starter too.