Does anyone know the measurements of the stock 2010 Kilo TT stem and handlebars?

Length and diameter of the stem?

If I want to replace the handlebars with bullhorns do I purchase 25.4 or 26.0?

Thanks very much!


Btw, I run a front brake with 23s and it's looks like there isn't even enough clearance for 25s...any experience with this?