NEW Shimano BT-DN300 Built-In DI2 Battery - For Dura-Ace 9150 and Ultegra R8150 Systems Compatible with SD300 Wires tubeless-ready-clincher which maintains a fixed width

which maintains a fixed width for loading with ease

- MINI CLUSTER technology with aluminum large cog for light weight and durability

affordable replacement 1/8" chain

BB/Frame Interface: PF30

NEW Shimano BT-DN300 Built-In DI2 Battery - For Dura-Ace 9150 and Ultegra R8150 Systems Compatible with SD300 Wires tubeless-ready-clincher which maintains a fixed widthShimano Di2 Batteries. Must purchase battery, charger, and power cable to complete the system. All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com