BT-DN320 Rear Derailleur Battery

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Full wireless technology means an all-new battery. The BT-DN320 fits snuggly and protected within the new wireless XTR rear derailleur and powers the fast and smooth shifting XTR i s known for.• Protected Battery: Tucked safely inside an enclosed space, the battery won’t budge even in rough terrain, while remaining completely removable for charging. • Longevity: 305 mAh provides for more riding on one charge. Show more