do ya want in on the 49cc race only ?
let me know
i have seen exhaust pipes on here that were 10 times the size of a 49cc piston and would suck it out the exhaust
a real 49cc race will be a slow one so not to many are interested
but if you are in i am in also
i will work my stock 49cc stock motor
it will be same diameter 49cc piston as posted
but will be domed for more compression and port matched and cam ground for lift from stock grind .
but will be stock head and stock valves as photo above
i advise you do the same so no cheatin from me or you
as i will disclose and show my motor at end of race with head off to mic it and see same size piston in bore (stock ) bore
i will also be pullin 2 gears in stock tranny because it came stock with 2 gears
and now i developed a 2 speed handlebar shifter i will be using
this is so you know what you are up against
also now everyone else knows what i am running to race you in the 49cc race only
it is for the 500 cash also
so tell us what you have send a photo we all can see
and lets race !!!!