Just curious. I am running 19/43 and am considering lower. 44-45 is the obvious choice but then i'm into a new chain too.
Just wondering if anyone has done 18/...
I think it is well accepted that the 19-46 combo is ideal for all of the 2011-2015 Pros. Unless you are riding mostly at sea level or boost it, in which case 19-46 is geared too low.