BT-DN300 Built-In DI2 Battery - For Dura-Ace 9250 and Ultegra R8150 Systems Size:One Size Made of breezy woven performance

Made of breezy woven performance fabric

With simple installation

This shape lets your foot rest naturally on the pedal as you ride

4 oz / 120 ml

Please see the age & size options below:

BT-DN300 Built-In DI2 Battery - For Dura-Ace 9250 and Ultegra R8150 Systems Size:One Size Made of breezy woven performanceShimano 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 Compatible with thinner, next generation electric SD300 wires and R9250 and R8150 series systems Features three SD300 wire