The idiots way is to use anything other than a DuraAce BB. ....UTFS!
Only if you're using the Octalink, bc a square taper BB does not seem to exist!
If you're using square taper it needs to be ISO and 108.5 or 109 or 109.5 depending where you read.
RE: Octalink vs square taper - I'd go for the Octalink version just bc finding an appropriate sealed square taper seems to be a bit of a mission. Phill Wood have BB's that work bc they have adjustable cups.
Jokes - I've been having the same issue....
Only if you're using the Octalink, bc a square taper BB does not seem to exist!
If you're using square taper it needs to be ISO and 108.5 or 109 or 109.5 depending where you read.
RE: Octalink vs square taper - I'd go for the Octalink version just bc finding an appropriate sealed square taper seems to be a bit of a mission. Phill Wood have BB's that work bc they have adjustable cups.