Shimano Dura Ace Di2 R9170 Hydraulic STI Levers

The shift paddles now feature a more defined "click" for confidence in shifting and to prevent mis-shifts, also the shift buttons have been extended in length meaning they are easier to reach from the drops and hoods. E-Tube compatibility means that the function of the shift paddles can be customised to suit the rider. The 9170 shifters now include Synchro-shift technology that automatically moves the rear derailleur when the front ring is changed or moves the front chainring with the rear shifts to optimise chainline and drivetrain efficiency. Read more…