Old 03-27-12, 10:00 PM
  #13  
ColinL
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Bikes: Santa Cruz Blur TR, Cannondale Quick CX dropbar conversion & others

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Most likely, at your height the 51 and 54 can both be made to work with the right stem and seatpost.

It shouldn't be an issue unless you need really high bars, level with the saddle or above. If that's the case the 54 would be better.
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