Shimano BT-DN320 Di2 Rear Derailleur Battery Bikes The cutting-edge microfibre molecules fill

The cutting-edge microfibre molecules fill the bigger holes and tears

Folding bead

Effortless USB-C Charging

Shifters: Shimano 105 Di2

Carbon Wheels That Reward Every Watt

Shimano BT-DN320 Di2 Rear Derailleur Battery Bikes The cutting-edge microfibre molecules fillFull 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 is known for. Protected Battery Tucked safely inside an enclosed space, the battery wont budge even in rough terrain, while remaining completely removable for charging. Longevity 310 MaH provides for more riding on one charge