I thought I would just add to this thread… however, bottom brackets must be the bain of all cycle mechanics. Why are there so many options? Even when you know whether it is a BB30, BB90, BBrigt, PF30, Shimano, is it 30mm, GPX or 24mm. Then when you know that it is a BBright, 30mm is it a 79mm width or 68mm width… and having done all of this, you find out that in 2014 on a Cervelo R3 on a BBright, 30mm, 79mm wide Bottom Bracket, they actually had a unique Rotor Crank, with different spacing, so you actually need a BB30 Bottom Bracket… Is this information available from Cervelo? of course not: eventuallly you can find it on various forums
Please for the sake of all cycle mechanics, and to save our ears from squeeking, please fit all bikes with threaded Bottom Brackets