Shimano Dura-Ace / Ultegra Di2 SM-BMR1-L Long Battery Mount For External Routing Tyre Width_45c Turning on the RGB led

Turning on the RGB led in different colours to communicate with the user

Its X-Glide chainrings have multiple shift points designed for snappy

Full instruction booklet included

No matter whether you're in the city

Steerer length: 300mm

Shimano Dura-Ace / Ultegra Di2 SM-BMR1-L Long Battery Mount For External Routing Tyre Width_45c Turning on the RGB ledShimano Dura Ace Ultegra Di2 SM BMR1 L Long Battery Mount For External Routing SM BMR1 L long external type battery mount for external frame cable routing To be mounted on specific Di2 compatible frame battery mounts Reliable and secure water resistant connectors Battery mount for external routing Easy mount and remove for charging Bike frame friendly mount Battery sold separately (not included)