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Shimano E-Tube Di2 SM-BTR2 Internal BatteryA single-wire E-tube connection and new junction units for a cleaner look and easier installation.
- Shimano Di2 Battery with Long battery life (up to 2000km when fully charged)
- Concealed mounting
- Special PC interface (SM-PCE1) for system diagnostics and customising the system
- Must purchase battery, charger, and power cable to complete the system
Shimano E-Tube Di2 SM-BTR2 Internal Battery
- 11-speed Electronic Shimano
- 71 grams