73mm

  1. drexal77

    Wanted Bottom Bracket 73mm shell size, 122.5mm or 127mm spindle length, 1.37 x 24

    Hi all, I'm looking for a bottom bracket 73mm shell size, 122.5mm or 127mm spindle length, 1.37 x 24 for a build i'm doing. I bought a shimano UN300 but cannot get it to thread into 2x different bikes, the threads look fine on it, so not sure what's happening, but have seen video's pf others...
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