With smaller, sleeker hoods, the 2×11-speed compatible Shimano Dura Ace Di2 ST-R9170 STI for hydraulic disc brake units deliver improved ergonomics for better rider comfort and control, with reduced lever stroke and lighter action.
Most advanced component group of all time: The Shimano Dura Ace Di2 2-speed STI Dual Contral ST-R9170 left for Hydraulic Disc Brake
With the introduction of DURA-ACE R9100, Shimano has reestablished the new benchmark for road performance by improving each component and incorporating its newest technologies. DURA-ACE R9100 delivers unparalleled performance, highly-refined ergonomics and immense customization to maximize every rider’s potential.
Engineered for the next generation of race bike, DURA-ACE R9100 offers top-tier performance across numerous configurations. Available with either Di2 electronic or mechanical shifting, for the first time, riders now have the option of premium DURA-ACE hydraulic disc brake performance. New Shimano technologies further integrate the DURA-ACE as a system, including a new power meter, while riders further integrate with their bike through new E-Tube wireless connectivity. Shimano’s Rider Tuned philosophy and customization of the bicycle’s function also expands with a wider range drivetrain that now includes intuitive Shimano Synchro Shift control.
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