Shimano EW-SD300-I Electric Wire Di2 650mm Built-In Routing giant This curved adhesive helmet mount

This curved adhesive helmet mount allows you to use your Exposure helmet light on any full face helmet

shifting system: 10-speed

Hardware Kit

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

Shimano EW-SD300-I Electric Wire Di2 650mm Built-In Routing giant This curved adhesive helmet mountShimano 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