Shimano BT-DN320 DI2 Rear Derailleur Battery Brand_Cyclonus Controller: Mode support switch from

Controller: Mode support switch from SRAM bonus button

Graphene + Silica 2C Compound

ALUXX Aluminum Technology

Dash Carbon

Shimano BT-DN320 DI2 Rear Derailleur Battery Brand_Cyclonus Controller: Mode support switch fromDi2 REAR DERAILLEUR BATTERY BT DN320 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 is known for. FEATURE Protected Battery: Tucked safely inside an enclosed space, the battery wont budge even in rough terrain, while remaining completely removable for charging. Longevity: 305 mAh provides for more riding on one charge.