• I have a threaded T47

    All T47s are threaded it's what the T stands for, treks might be slightly narrower so they don't fuck them up with shallow splines in big factories, I haven't looked into whether that's an issue or just might need a possible spacer depending on BB/cranks whatever.

  • Should said it was an external T47 bearing so not flush fitting bb like other T47 that seem to on the Treks

    I have T47 on my stayer but have swapped it for a Hope BB so have this Rotor one spare so seeing what I can fit as have crank arms and axles to fit Road or wider

  • The bikes all have a T47 BB shell though, that's the standard (with trek shaving a teeny bit off that shouldn't affect much), what you do with BBs and cranks is a separate issue.

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