Shimano BT-DN320 Di2 Rear Derailleur Battery D3 That’s why we developed the

That’s why we developed the perfect solution for serious amateur runners: an understated

full carbon integrated bar/stem

T25 Torx®

SpecificationsBraking system: Disc

Many upgrading from previous-generation SRAM cranks also report improved fit after switching to shorter crank lengths

Shimano BT-DN320 Di2 Rear Derailleur Battery D3 That’s why we developed theFull 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