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Sept. 22, 2022, 10:43 a.m. -  SomeBikeGuy

[But which T47?!?](https://cyclingtips.com/2019/06/trek-t47-threaded-bottom-brackets/) The "standard" T47 with a BB shell width of 86.5mm, or Trek's adaptation of T47 with a BB shell width of 85.5mm that makes mass production a lot easier at no cost to performance? BB cups for T47 86.5mm work fine with T47 85.5mm but it doesn't work the other way around. If only more stakeholders could have thought through and talked about T47 before this mess happened, right?  I'd be surprised if T47 didn't have an impact on frame design, particularly full suspension frames, so I'm thinking that it mostly keeps to the road & hardtail side of things. But I'm not a frame designer, so what do I know???

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