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Understanding the Shimano BB and chainline system.

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  • Zack B
    Shimano square taper bottom brackets have a complicated system of asymmetry that allows you to adjust your chainline within a 10mm range by using Different BBs
    Message 1 of 1 , Mar 16, 2013
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      Shimano square taper bottom brackets have a complicated system of asymmetry that allows you to adjust your chainline within a 10mm range by using Different BBs and spacers. As usual, Shimano has no official documentation of how this works available to the public (AFAIK), but there is a demo chapter from Barnett's that explains it:
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