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Shimano Di2 SM-BTR1 Battery Pack

Item No. »  SH-BA

MSRP: $77.99
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This rechargeable battery pack is the heart of the Shimano Di2 system. It's designed to keep your derailleurs going for up to 1000km, no matter how many times you shift. It uses Lithium Ion technology for superior performance with minimal size and weight....

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