The main difference from 105 to Ultegra is lower weight, with the exception of the STI levers which, I would say, are a lot nicer* in Ultegra. They trickled down the aero shift cabling and brake cable pull ratio changes to both 105 and Ultegra at the same time (5700/6700).
The main difference from 105 to Ultegra is lower weight, with the exception of the STI levers which, I would say, are a lot nicer* in Ultegra. They trickled down the aero shift cabling and brake cable pull ratio changes to both 105 and Ultegra at the same time (5700/6700).
*more solid-feeling, better finish