Shimano EW-SD300-I Di2 Electric Wire 350mm Built-In Routing Attaquer Shimano Dura-Ace Di2 ST-R9270 12-speed

Shimano Dura-Ace Di2 ST-R9270 12-speed shifter

Includes pump holder and hardware to securely attach to water bottle bosses or under bottle cage

Mountain bike

Updated artwork

BUILT-IN CADENCEIntegrated cadence – the feature simplifies your setup by providing accurate cadence directly from your trainer

Shimano EW-SD300-I Di2 Electric Wire 350mm Built-In Routing Attaquer Shimano Dura-Ace Di2 ST-R9270 12-speedShimano Ew Sd300 I Electric Wire DI2 350mm Built in Routing Features More compact design makes new electric components smaller and lighter Will potentially expand the future capabilities of DI2 systems For internal routing usage Mfr Claimed Weight TBC