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Old 10-12-11 | 10:30 PM
  #6  
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gg-madone
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Joined: Feb 2009
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From: Somewhere in NY

Bikes: '08 Trek Madone 4.7, '11 Giant TCX1,'86 Fuji Absolute

yes it will work. the 28 tooth gear will not work on older 105 group 5500 or earlier.
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