It's a unique patent-pending system, developed. It's based on intelligent shifting sensor fixed on shifting cable, which is reducing or cutting off the motor drive when the rider activates gear shifting. This market-proven device allows smooth shifting for both derailleurs and internal gear hubs. It also provides longer life to the whole shifting system.

A must-have for mid-drive e-bikes! Especially if you drive with more than 400 watts.

Including two Shifting Cable End Caps.

With yellow HIGO-connector for BBS-01, BBS-02, and BBS-HD.