from wat i have seen and tried abit of, danny is wright no dout's about it

bzm engines kill polini's all day every day this is not to say that polini's are poo but wen both engine's are worked hard the bizeta will always be in front. bizeta have a much bigger range of cranks, barrels, cases, coils's and pipes all to suit your combination but having sed all this polini are still very respected engines and are a weapon when built wright

just my two cents
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team riders
kenny senior a/c elite & pro cag
joel senior w/c pro and body mechanic
ben senior standard w/c and a/c elite
liam senior w/c elite, a/c elite & standard cag
tyson junoir standard cag