Note: this is for the Dura-Ace Left shifter only. It does not include a caliper. The caliper is available separately.
Shimano Dura Ace Shifters or Shimano Dura Ace Di2 ST R9170 2x11 STI Shifter & Hydraulic Disc Brake Lever Set. With smaller, sleeker hoods, the 2x11-speed compatible 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 riders potential.