For the new DURA-ACE 9100 series, Shimano has redeveloped every single
system component in order to create the most innovative component group
of all time.
The derailleur cable routing has been adapted to
further reduce the force applied when shifting gears. The precise and
easy adjustment of the front derailleur offers more cable routing
options and an integrated adjustment of the tension. With its optimized
gear ratio in combination with the ST-R9100 switching | Brake lever and
the coated cables, the new Dura Ace front derailleur ensures both
shorter lever travel and lower shifting forces.