Thread: Shimano Tiagra? Is it good?
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Old 05-02-09 | 12:03 PM
  #22  
johnny99
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Joined: Apr 2005
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From: Northern California
Originally Posted by PaulRivers
Not to mention that by going from 9 speed Tiagra to 10 speed 105, the shifter is going to be designed for one more gear than you have available. I'm not sure it would even work - you might have to replace the cassette and derailleur as well.
10-speed requires a new cassette and chain, not derailleur.
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