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Thread: 7 speed to 8 speed - freehub body?

  1. #1
    J is offline
    Hans Rey superfan J's Avatar
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    Apr 2002
    Badger Den

    7 speed to 8 speed - freehub body?

    Is it possible to run an 8 speed cassette on an older 105 7 speed hub? I'd have to get a new freehub body, right?

    I'm asking for someone else. I ran an 8 speed cassette on once was a 7 speed hub one time, but I believe I had to replace the freehub body.

  2. #2
    Mojo ojoM madbob's Avatar
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    Mar 2003
    fort hood texas
    with the right size hammer anything is possible.
    (disclaimer: all of the above is a personal opinion and does not necessarily reflect the views of the MoJo or those who post on it)...

    r3y35: pronounced.........sombody call a doctor

    I thought everything was BIG in Texas?

  3. #3
    MoJo PoLaR BeAr
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    Bear's Avatar
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    Aug 2002
    Cruising through the intermittent muck
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    Yes, should bolt on fairly easily. I've done this to bikes before (not with 105, but with other shimano).

    I'm a bit paranoid since shimano tends to change the outer race seals between revisions, so for example to upgrade my wife's 2nd bike from 7-spd to 9, I got an LX rear hub on sale for like ten bucks, and am going to pull the freehub, bearings, cones 'n so forth, and seals for the freehub side. I'll keep the old seals for the NDS so that the connection with the hub is better.

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