Pay in 4 interest-free payments of $34.88 Learn more
Ships within 48 hours · Estimated delivery Jul 31 - Aug 5
This layer is designed to rotate inside the helmet with the intent to potentially slow or reduce the amount of energy transferred to or from the head
CNC machined alloy cups
Prolongs chain life
Weight: 30t • 64g | 32t • 69g
Weight: 300g
Shimano Di2 BT-DN300 Internal Battery instorepickupbikes This layer is designed toThe new Shimano DN300 battery features the same waterproof design that Di2 users have loved for generations. Now with 3 EW SD300 ports, it delivers stable power to Shimano's 12 speed road front derailleurs and rear derailleurs (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