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Old 06-16-2008, 04:37 PM
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Pablo Pablo is offline
Master Bike Builder & Forum Sponsor
Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 3,649
Default Re: How do you port and polish

I can tell you, it makes a difference. Combined with a new pipe, a HUGE difference. The stock parts are really made for the 49cc engine, so they choke the 67cc.
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