Gravel / Gravé / Gnarmac / Groad / ATB

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bur70n_ in reply to @snottyotter

Whether they are internal or external cups/bearings.

School day

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snottyotter in reply to @bur70n_

Yeah, T47 is the BB shell standard, like you get internal bearings for square taper or external for hollowtech2 etc. with your older threaded BB frames.

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b0n0rv2 in reply to @snottyotter

That’s not strictly true, T47 is the thread size not the shell size, so you’ll need a different BB to fit the same chainset across different frames

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