With 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 gear
the removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shifts
simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold
tt / triathlon single button bar end shift switches are used to operate both front and rear derailleur's with synchronized shifting
can be used on there own or in conjunction with sti
tt / triathlon bar end shift switches give the added option of being able to operate the gears from two positions, either these aero extension or the sti lever while under braking which is only possible on a Di2 tt set up
