Raceing crankshafts

Do they do anything substantial? I have a '01 tomos targa with a 70cc arisal, and a techno pipe. And when i get it wide open it vibrates like a son of a bitch! i was wondering if its because the bigger piston is throwing everything off balance and would a performance crankshaft fix it?

Re: Raceing crankshafts


Re: Raceing crankshafts

you need to balance your clutches. Don't worry about the performance crank unless you're hitting crazy RPMs.

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