Shimano BT-DN320 Di2 Rear Derailleur Battery bikes Perfect bike frame protection -

Perfect bike frame protection - also for wheels and other components

the SHIMANO DEORE XT BL-M8100 lever provides intuitive modulation so that you can explore your limits with confidence

Clearance for up to 34mm tyres for greater versatility

hang it in place with good airflow

and features Attaquer's instantly recognisable 'F@ck Yeah'

Shimano BT-DN320 Di2 Rear Derailleur Battery bikes Perfect bike frame protection -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. 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