Di2 Battery BT-DN300 Flat Bar will find Sapphira an advanced

will find Sapphira an advanced rubber for the modern all-round strategy

Adjustable toe-in brake shoes

3-Axis Gyroscope

For better protection from the elements

1 standards

Di2 Battery BT-DN300 Flat Bar will find Sapphira an advancedThe new DN300 battery features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12 speed road derailleurs and shifters (if a fully wired option is selected). With the same size as its predecessor, the slim DN300 battery can be housed inside seat posts or frames ensuring a clean aesthetic. Now with 3 ports, the DN300 simplifies wiring to front and rear derailleurs, supplying