Shimano BT DN300 Built In DI2 Battery Kayaks Metal construction holds up to

Metal construction holds up to frequent use

Rotor Size (mm) 180

5 Alpine Dry Rope: low weight

The Speed Lock plus allows you to quickly and easily adjust the length

Shimano BT DN300 Built In DI2 Battery Kayaks Metal construction holds up to"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 simplifies wiring to front and rear derailleurs, supplying