Originally Posted by
genejockey
I've toyed with the idea of replacing the crankset on my Bianchi - an ISIS-drive FSA Gossamer compact from 2006 with what feels like a really wide Q factor - but as soon as I started looking I realized I'd also have to replace the BB, and I have NO IDEA what BB goes with what crank! I know the BB shell is English threaded. I may just fob the entire job off on my LBS, just tell him "something compact that won't make me feel duckfooted" and be done with it.
Each crank will either come with a bb or tell you whats needed. Just buy the bsa/threaded bb.
Praxis crank = praxis threaded bb.
Shimano crank = shimano threaded bb.