dood said:For Road Race use, it will be ok as long as there aren't any really slow corners or if you can keep the rev's high.
Since a VM26 is on the large size for such a small engine, the velocity will be weak so your jetting will have to start off fairly rich compared to to say what a 143 or bigger engine would require.
I'd start with a 200 main/ 27.5 pilot/ and needle in the 4th clip.
HatterasCast said:got two stockers that have vm26 on them. with the stock pipe, we put the 65 jet in it out of the 26mm jet kit. sorry i dont know all the details like some other guys (dood) but thats what works great on these motors. when added a procircuit pipe, no change still ran tits