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Old 02-20-05, 08:15 PM   #1
derwagon
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Front Derailleur Size

Getting ready to purchase new Ultegra front derailleur for a 2004 TREK 2300 (complete buildup). My choices are:

- 31.8/ 28.6 mm

- 34.9

- braze on

Can anyone help me with the right size?

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Old 02-20-05, 08:54 PM   #2
Moose
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The size refers to the diameter of the clamp that goes around your seat tube, a quick measurment should reveal the answer. Unless of course the frame is equipped with braze-ons for the FD (I looked at the pic on Trek's website and couldn't really tell) then your choice would be the latter.
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