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Old 05-05-2013, 06:33 AM
aussiedan aussiedan is offline
Motorized Bicycle Senior Member
Join Date: Feb 2013
Location: australia
Posts: 80
Default Re: 4 stroke 125cc pit bike engine

i have tried doing a search but its a little confusing,with a gx200 and 26in wheels what gear ratio should i aim for to get a top speed of 50mph?
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