Originally Posted by
cyccommute
The XT probably won’t play well with an STI shifter. The pull ratios are different.
I am sorry to hear this! I have such good shifting in the front with the bar-end I have that I would be reluctant to change the shifter if it would mean having to find another front derailer that would work as well as the XT.
Today I mounted a DuraAce ST-7700, designed for a double, and indeed, it would not shift three rings. It pulls about a centimeter of cable, versus the bar-end, which pulls two centimeters. How much cable does an STI triple pull?