Shimano SM-BTR1 Di2 External Battery, Dura-Ace / Ultegra Di2 (used) RockShox 5 ° K chainstay 450

5 ° K chainstay 450

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Size Type: Regular

700x23c Bike ID 9876543212107 Why We Love It USPS era classic OCLV carbon with a modern 105 R7000 drivetrain—proven frame + crisp

Shimano SM-BTR1 Di2 External Battery, Dura-Ace / Ultegra Di2 (used) RockShox 5 ° K chainstay 450This Lithium Ion battery for Shimano Di2 electronic shifting systems was developed as an external battery option for e Tube wiring on frames without frame integrated internal wiring options. This is the battery only, no mount or charger included. Shimano mount options, which have the e Tube port and communications technology required. Features External e Tube compatible Di2 battery; reliable Lithium Ion power for Di2 systems Designed to connect with