Shimano EW-SD300-I Electric Wire Di2 650mm Built-In Routing giant puncture protection is high and

puncture protection is high and the rolling resistance is low offering protection from premature wear brought about by the additional driving force

shifting system: 10-speed

Includes integrated computer mount system and accessory mounts

Tools - CO2 inflator

13 forged and plated tools

Shimano EW-SD300-I Electric Wire Di2 650mm Built-In Routing giant puncture protection is high andShimano Ew Sd300 I Electric Wire DI2 650mm 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