This is a pretty weak question, I admit...

P2K has a 11-23 rear cassette. But how many is in the second smallest...12? 13? Can anyone fill me in? I'd hate to sit and count them. And does the number increase by one for each ring, 11...12...13...14, etc.?

And the front chainring (I think the wrong name!) is a 39-53? I looked on the Cervelo website and it wasn't there.

The set up is how I received it from Cervelo, no changes.

Thanks for the assistance, it is greatly needed.