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Old 11-12-08, 10:29 PM
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big john
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The most important measurement is the top tube length. Try to measure your bike and see how it compares to bikes you are looking at.. If you have a sloping top tube, measure from the center of the headset horizontally to the point where the seat tube intersects that line. This is called 'virtual top tube'.
This is if your bike fits the way you like it.
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