Shimano's new shifting systems use wireless technology on R7170, R8170 and R9270 versions where it makes sense for both day-to-day life and ultimate performance. Freeing the shift levers from the rear of the bike cleans up the cockpit and simplifies the build process. Meanwhile, connecting the derailleurs to an internal main battery ensures absolute reliability by maintaining stable voltage while also improving Shimano's already lightning-fast shift speed that has made Di2 a staple of the WorldTour pro peloton is not simply an effort to make one-time bike setup easier or to unveil new technology for the sake of creating buzz. Instead, it represents a holistic approach that is 100-percent performance focused.
REFINED INTERFACE
New Di2 dual control levers feature dramatic, all-new ergonomics and act as the wireless command center on R7170, R8170 and R9270 Type Levers. The DURA-ACE and Ultegra and 105 levers have a longer, slightly curved hood body for a more comfortable and secure grip. Shift buttons are easier to reach and differentiate with extended switches and an increased offset between them. With better access and faster shifting, you’ll always find yourself in the right gear.