Disc Brake Set Rear Shimano Dura-Ace Di2 R9170 11s, right

Shimano Dura Ace Di2 11-speed Disc Brake Road ST-R9170+BR-R9170 rear With smaller, sleeker hoods, the 2x11-speed compatible Di2 ST-R9170 STI with BR-R9170 caliper 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 11-speed Disc Brake Road ST-R9170+BR-R9170 rear 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. Hydraulic disc brake calipers can be directly mounted on the frame (flat mount) for a clean low profile design. New dedicated DURA-ACE rotors bring better heat management properties to provide stability in brake performance. With an increased adaptor size, heat transfer through the rotor is decreased and more heat can dissipate through the air. This results in a 30°c reduction in rotor temperature over Shimano’s ICE TECHNOLOGIES FREEZA rotors. 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. Features More control and confidence in race conditions Optimally balanced hydraulic brake system for racing Dedicated brake lever shape, stroke, contact point, stiffness and dedicated shift paddle