Thread: Upgrading from the Tiagra 4403 front derailleur.
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Old 07-12-10, 09:42 PM
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Bezalel
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the current Tiagra (FD-4503) and Sora (FD-3403) both specify a maximum tooth differential if 20 teeth. The current 2200 (FC-2303) specifies 22 teeth.

The previous versions all allowed 22 teeth.
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