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  1. #1
    Senior Member Mendel's Avatar
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    Front derailleur compatibility...9sp on 8sp group

    I need to replace my front derailleur after going from a triple crankeset to a double one. The rest of the bike is all 8 speed Sora. Do I need to find an 8 speed derailleur or can I use a 9 speed?

    If I used the 9 speed what issues will I face?

    Thanks.

  2. #2
    Senior Member
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    FD shouldn't care too much if it's 8s or 9s.

  3. #3
    cycles per second Gonzo Bob's Avatar
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    Oct 2003
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    Minnesota
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    Vitus Aluminum, DiamondBack Apex, Softride Powerwing 700, "Generic" Ishiwata 022, Trek OCLV 110
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    i think the 9sp FD cage is narrower. it will still work but you may need to trim the FD more after rear shifts. i run a 9sp deore on my 7sp bike and this is what i have found.

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