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Streamlined for Easy Maintenance: The IAx Advanced 105 is designed to make your life easier
This feature enhances stability on smooth surfaces
and alternating modes
As a critical component in Shimano’s Di2 system
Shimano BT-DN300 Built-In Type Di2 Battery [SD300 Type] Socks Streamlined for Easy Maintenance: TheThe Shimano BT DN300 Built In Type Di2 Battery is engineered to deliver consistent and reliable power to Shimano's latest 12 speed Di2 systems. Its internal mounting design ensures a clean look and seamless integration with modern road bikes. Three Port Configuration for Flexible Wiring: With three SD300 ports, the BT DN300 makes it easier to wire both front and rear derailleurs while also supporting a fully wired option. This added flexibility allows