Shimano Shifter Switch SW-R9160 Dura-Ace DI2 310602-05 More specifically the downpours or

More specifically the downpours or the mud

Quickly adjustable to fit all body types

Includes DebonAir assembly and C1 sealhead

and reduce chance of injury by optimizing hip

and 6mm hex wrenches

Shimano Shifter Switch SW-R9160 Dura-Ace DI2 310602-05 More specifically the downpours orEasy to push the thumb switch when gripping the top of the TT extension. A single programmable shifter button in each unit, designed to fit cleanly into aerobar extensions. Works perfectly with Shimano's Di2 Synchro Shifting: each "up" shift moves to the next gear ratio considering both front and rear derailleurs, each "down" shift does the reverse. Requires Shimano 9100 Di2 drivetrain. Can be installed as sole shifting point or used in conjunction