Old 01-23-10, 10:31 PM
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Location: Mountain View, CA
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Bikes: 2012 Scott CR1 Comp

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From what I have been able to gather, how your legs are is what really determines crank length. If you have excessively long femurs in relation to your leg length, then you might be more comfortable with longer cranks. However at 5'3", I don't suspect that you likely have that problem and will want/need 175's. I am 5'8" and while my femurs are longer than would be expected for my height and inseam, I ride 170's and can pedal smoothly. I'd expect you would be happy with 165's or 170's.
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