Parts -> Shifters -> Small Parts -> Shimano, ISMBTR1A, SM-BTR1, Battery for Dura Ace Di2 system
Shimano, ISMBTR1A, SM-BTR1, Battery for Dura Ace Di2 system
Shimano
Price: $110.00
* External Di2 battery* Compatible with all e-Tube Di2 systems* Requires external mount
