Worry-free Di2 shifting in a compact shifter size. The Shimano 105 Di2 ST-R7170 Disc Brake 12 Speed Shifter brings Di2 electronic shifting to 105 for the first time, delivering precise, intuitive gear changes to even more riders. Reach adjustment and customized button functions let you dial in your ideal ergonomics.

Features
Clean cockpit: wireless connection enhances the aesthetic of your bike while keeping shifting lightning fast
Longer lasting: uses two CR1632 batteries (battery life 3.5 to 4 years)
Compact, ergonomic performance cascaded from Dura-Ace
Raised hood peak improves ergonomics, while a longer hood body increases hand support
Custom button function and adjustable ergonomics
Easily change button function with the E-TUBE app
Find your optimum lever position with simple reach adjust

Specifications
Left or Right Di2 Shifter
Hydraulic Disc Brake Specific
Does not include any calipers, brake/shift lever includes CR1632 battery
(without EW-SD300 Di2 cable)

Mfr Claimed Weight
423g

Get flagship-level Di2 shifting on 105 with this shifter, in stock now at CCACHE.