Shimano EW-SD300-I Electric Wire Di2 1000mm Built-In Routing Bikebox Watt savings from reduced rolling

Watt savings from reduced rolling resistance

Organic brake pads provide superior lever feel and minimal rotor noise

Experience the incredible insulation of our quilted gilet

Featuring Clarity technology from optical industry leaders Carl Zeiss Vision Sunlens

a total weight reduction of 100 g may be achieved for the entire bike

Shimano EW-SD300-I Electric Wire Di2 1000mm Built-In Routing Bikebox Watt savings from reduced rollingShimano Ew Sd300 I Electric Wire DI2 1000mm 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