Shimano BT-DN300 Built-In DI2 Battery - Compatible with SD300 WiresShimano 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

King Lifetime Warranty

Color : wenge green

Its precision construction guarantees a secure fit and reliable engagement

Designed to fit 29mm spindles on SRAM DUB cranks on frames using the BBRight bottom bracket standard

• YKK premium zipper

Complete OSPW RS ALPHA SRAM Red/Force AXS system

Bottom Bracket: BSA

Ideal for riders who demand consistent gear changes and frame protection

crafted from 6066 series aluminum

12-Speed Chain SRAM Rival E1 Front Wheel Reserve 40

Its compatibility with the HB11 Basebar makes it an essential upgrade for riders seeking optimal performance and reliability in their aerodynamic positioning

delivering precise and smooth shifting across a wide gear range