This is not a common issue, the main bb change I do is from pre 2013 to change the cranks too
I still haven't got my Sugino 75 cranks installed but will change the BB at the same time, what size? 68 x 119 ISO?
Unless pre 2013 the bb is JIS, but obviously just needs to suit the crank, 68/119 or so (I use 122 to clear the chainring)
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London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
This is not a common issue, the main bb change I do is from pre 2013 to change the cranks too