• Under the DS Cup, is that a spacer I see before me?

    It’s not a groove as to denote a left hand thread?

    Should have remembered we are discussing an Italian bb, no left hand threads around.

  • It’s not a groove as to denote a left hand thread?

    I think you were on the right track, because GXP bearings are handed, but Italian threads aren't, it's useful to have the drive side cup clearly identified.

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