Originally Posted by
Andrew R Stewart
A few posts ago I was going to say that we didn't even know the shell's threading spec. I tried to look up the spec options of a BB-RS5000 and only found Eng/BSA versions. So I didn't post.
One more thread where we all speculate, and the OP hasn't (yet) followed up with more info. Andy
https://blueskycycling.com/products/...bottom-bracket
RS500B is a BSA, RS500I is Italian.