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Hide your battery.
The PRO Expander Headset Adjust System with Di2 Battery Holder is designed to pair with PRO Tharsis Trail and PRO Tharsis Trail stems to tuck your Di2 battery stealthily away inside your head tube. It comes packaged with a battery mount, zip ties, and a top cap.
- Di2 battery holder integrates into your headset and head tube
- Compatible with PRO Tharsis Trail and XC stems
- Item #PRS002Q