Shimano EW-SD300-I Electric Wire Di2 500mm Built-in Routing Attaquer heavier riders or frequent riding

heavier riders or frequent riding on rough chip seal and wet roads

The Super SLR technology is based on a smoother function of caliper

the cross-section of the bar top has been developed in CFD and proven in the wind tunnel to reduce drag

Speed (FD): 2x12

Wider and gently raised edges on the tops support a better aero position on the hoods

Shimano EW-SD300-I Electric Wire Di2 500mm Built-in Routing Attaquer heavier riders or frequent ridingShimano Ew Sd300 I Electric Wire DI2 500mm 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