NEW Shimano BT-DN300 Built-In DI2 Battery - For Dura-Ace 9150 and Ultegra R8150 Systems Compatible with SD300 Wires price_changed_on_2022-07-07 BR-RX400 disc caliper features Shimano

BR-RX400 disc caliper features Shimano ICE Technology for excellent heat dissipation

52 degrees yeilding telepathic control

Chain: Shimano HG54

Tubeless optimized for rolling fast and fewer flats

File tread center pattern offers low rolling resistance on smoother terrain and increased grip when the road gets rough

NEW Shimano BT-DN300 Built-In DI2 Battery - For Dura-Ace 9150 and Ultegra R8150 Systems Compatible with SD300 Wires price_changed_on_2022-07-07 BR-RX400 disc caliper features ShimanoShimano 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