Thread: Size reference... please clarify
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Old 07-04-11 | 04:17 AM
  #4  
svtmike
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From: Chicago, IL

Bikes: S-Works Roubaix SL2^H4, Secteur Sport, TriCross, Kaffenback, Lurcher 29er

Your coworker is less wrong than you . The measurement is typically the length of the seat tube from the center of the bottom bracket to the center of the top tube, or in the case of a compact geometry to the center of the virtual top tube.
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