Shimano BM-DN100-L Di2 Long Size Battery Mount (External Wiring) (No Battery) (For SM-BTR1)

Shimano BM-DN100-L Di2 Long Size Battery Mount Description:

Shimano Di2 External Battery Mounts are intended for use with Shimano SM-BTR1 External Batteries when setting up Bluetooth shifting solutions.

Features:

• All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
• Use Di2 system checker to update component firmware from