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and smooth shifts every time
3T started life as a master dropbar manufacturer
this chain provides the efficiency of a wide-range drivetrain while maintaining quiet operation and dependable performance across demanding terrain
flowing through singletrack
Built with a smart
Shimano BT-DN300 Built-In DI2 Battery external and smooth shifts every timeThe Shimano BT DN300 Built In Di2 Battery is the internal power unit for Shimanos latest Di2 electronic shifting systems, designed to deliver stable and reliable energy to keep shifting performance precise and consistent on every ride. Engineered for full integration within the bike frame, the BT DN300 helps maintain a clean, aerodynamic setup while powering all connected Di2 components. It works as part of a complete Shimano Di2 system that includes
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