Top of the range, high performance Dura-Ace wireless hydraulic Servo Wave disc brake Di2 STI's give you control, modulation and power with minimal effort in all riding conditionsWith Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gearWireless connectivity to the front and rear derailleurs for effortless trouble free gear shiftsSimply pressing tactile buttons allows effortless and comfortable shifting even when your hands are coldShifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, and a titanium clamp band / fixing boltDrop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STIHydraulic brake lever with Servo Wave technology provides excellent stopping power with less effort especially from the hood positionHydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wearFinely tuneable reach adjusters for the levers enable custom fitment for all handsFree stroke adjustment for pad to rotor contact settingLevers use CR1632 batteries which last for approximately 1.5-2 yearsPorts for use with SD300 E-tube electric cables
