![Smile Smile](https://forums.bikeride.com/images/smilies/smile.png)
I’m converting my 2010 via nirone 7 bianchi Alu carb from campagnolo to shimano .
What bottom bracket will I need ?
I’ll be fitting shimano ultegra either a 6800 50/34 or possibly a gtx 48-31 crankset .
The bike has always had the stock bb the bike was shipped with in 2010.
Currently it has a veloce power torque 50/34 fitted which I need to replace.
The current bb doesn’t have any numbers or stamps on it I can see. I don’t know if this frame has Italian screw for the bb or not .
I messaged bianchi but they haven’t not. Answered .
Does anyone know the exact bb I need to fit for use with those shimano cranksets please ?
![Smile Smile](https://forums.bikeride.com/images/smilies/smile.png)