For us you would be on the low end of SM or high end of XS. Our charts are conservative but you would fit on both. If I was looking at your fit I would focus on stand over height, then if you felt you would get more aggressive over time or less aggressive over time.

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Dan Kennison

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http://www.PremierBike.com
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If there is only one number, it's because that is the stack and reach of the frame. You need pad reach and stack and try to get in the middle of the range. Generally, you're on the right track about prioritizing reach between the two measurements (unless you are extremely low or high) since modern cockpit have a lot of stack adjustability.

Your fit is pad stack and reach (probably to the center of the pads, but could be to the back).

Most tri bikes have a chart that shows the range of adjustability for each frame size (using the stock cockpit). Here's the one for the Cervelo P5X:



As you can see, there is overlap between sizes. You want to be toward the center of the range if possible (esp. for reach, since there is impact on handling).

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ECMGN Therapy Silicon Valley:
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