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  1. #1
    zip
    zip is offline
    Member
    Join Date
    Feb 2006
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    Lake Tahoe
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    Bianchi Giro, BH G4
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    Shimano crank compatibility

    I presently have a 10spd Ultegra setup (Sti shifters, chain and cassette) with a FC6503 crank from the older 9spd setup I used to have. If I replace the crank and BB with an FC6603, because of the outboard bearings are there going to be other issues to deal with (chain line, incompatible FD, etc.)? Thanks for any help.

  2. #2
    Elitist Troglodyte DMF's Avatar
    Join Date
    Jun 2006
    Location
    Dallas
    My Bikes
    03 Raleigh Professional (steel)
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    Probably not.

    But why do you want to replace it?
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  3. #3
    Senior Member
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    Sep 2005
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    none whatsoever, I just installed a new ultegra 6600 am a tiagra on my bikes, chainline perfect and the outboard bearings are an improvement over my old screw in bb

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