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gbj_tester in reply to @Polygon

I read this is true down to a certain length, but cannot remember what that was...

I thought it was the other way around; symmetrical up to a point, above which the drive side gets longer than the non-drive side. I think up to 118mm are symmetrical.

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Polygon in reply to @gbj_tester

Ah right may well be, that makes more sense too.

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fizzy.bleach in reply to @Polygon

Sheldon Brown's Bottom Bracket Size Guide suggests that for Shimano 7400/01/02 cranks, the 112/113mm BBs have axles that are 3mm longer on the right hand side.

https://www.sheldonbrown.com/bbsize.html#dura

I only know this because I was looking for what size I needed.

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