Featuring trickle down technology from the range topping Dura-Ace, the Tiagra 4725 STI shifters & Hydraulic Disc Calipers provide superbly crisp, precise and ultra-smooth shifting and powerful, consistent braking performance.Suitable for 2x10 Shimano drivetrainsCompatible with Shimano hydraulic disc calipers for powerful braking (sold separately)New chamferred hood tops for improved gripReliable performance in all conditionsShorter reach levers for riders with smaller handsWith the addition of powerful hydraulic disc brakes to the Ultegra range, the flat mount calipers house dual pistons that provide excellent stopping power in all conditions. These new levers get the look and feel of the higher end 11-speed levers, while sticking with 10-speed internals. As well as the re-designed hood shape the shifters also feature neat under-tape cable routing instead of exiting from the side of lever like previous models. Like the more expensive groups the Tiagra levers provide a shorter shift str