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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
• Chain Connection Type Single Use Master Link
520mm width
Cassette/Freewheel 18t
8mm XS: 670mm (27
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Shimano BT DN300 Built In DI2 Battery Mountain Bike Helmets • Chain Connection Type Single"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
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