Shimano BT-DN300 Built-In Type Di2 Battery [SD300 Type] Brand_TREK The material used for the

The material used for the contact area

which allows for relief shifts by either pull of the index finger or push of the thumb

bolt type hubs

Silicone rubber pad cushioned between the cage and the frame for grip and protection

Shimano BT-DN300 Built-In Type Di2 Battery [SD300 Type] Brand_TREK The material used for theSHIMANO Built In Type Di2 Battery [SD300 Type] BT DN300 The 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