Shimano Dura-Ace Di2 ST-R9270 12 Speed Shifter + Flat Mount Caliper MISC IAV power: Yes

IAV power: Yes

credit card or money flap

creativity

Intuitive maintenance

stronger and simpler - non-aero chainrings can now be installed with a single tool

Shimano Dura-Ace Di2 ST-R9270 12 Speed Shifter + Flat Mount Caliper MISC IAV power: YesThe Ultimate Shimano Road Performance Experience Take your road bike build to the highest level with the Shimano Dura Ace Di2 ST R9270 12 Speed Shifter and Flat Mount Caliper, combining Shimanos flagship electronic shifting technology with powerful hydraulic disc braking performance. Designed for professional racing and the most demanding performance riders, the Dura Ace R9270 Di2 system delivers lightning fast shifting, refined ergonomics,