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Shimano XTR Di2 SM-BTC1 External Battery Mount

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• Mounts current SM-BTR2 battery externally next to bottle cage
• Low profile design mounts to any frame with bottle cage mount
• Junction B function
• Six E-tube wiring ports with cable organizer
• Clean appearance thanks to internal wire routing
• System expansion thanks to E-tube platform
• Weight: 51g
Package ID: Small_Package