 Bzm Power.............
Hi mate,
from years of experience in this game i would have to say that the BZM 50cc 6 port is the cream of the crop.Polini 50cc 5 ports dont come anywhere near in HP to the BZM engines.That is a proven fact as all major RACE TEAMS in Europe and Pocketbike manufacturers are all going for BZM engines.Polini is good but not as good as the BZM power.I have built and raced both engines for years and the BZM is alot better in every way. | 
