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Old 03-24-2014, 03:58 PM
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Will122391 Will122391 is offline
Motorized Bicycle Senior Member
Join Date: May 2013
Location: Texas
Posts: 90
Default Re: What more can I do (please read)

40mph on a china girls is not what they're meant for. You'll end up blowing an engine or crashing a bike spectacularly. Try to be reasonable with your expectations. If you're looking for power try an expansion chamber and ported reed valve for more high end.
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