Also posted in Classifieds: '99 Honda CR125 jug and head massively ported for roadracing by Banke Racing back in '04. HPV welded up, built for RS125 piston. Used on a roadracing shifter kart, good power 9500-12000, good overrev to 13000. Used w/PWK39 carb,
RLV pipe, stock ignition, VP C14 fuel. .034" squish band on this motor. Don't see any reason it wouldn't make an awesome 125 moto cylinder....