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  • What size bb ? On One 29er and Shimano Octalink Cranks.
  • matty456
    Free Member

    Just won an On One 29er frame off Ebay! Got a set of Shimano Octalink cranks to fit, hopefully. Need an Octalink bb. I know it’s a 73mm bb but not sure how wide to get for chain line 113mm or 118mm. Does it make that much of a difference?

    Cheers.

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