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With a shared Di2 platform inherited from Dura-Ace and Ultegra, sophisticated ergonomics, Shimano 105-optimized gear combinations, and an exceptional hydraulic disc brake system, Shimano 105 Di2 R7100 marks a new era of affordable, 12 speed electronic performance. You can set up the drivetrain just the way you like it via Shimano’s user-friendly E-Tube app.
When you pull a Servowave brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control.