Shimano BT-DN300 Di2 Battery 12 Speed PSI SRAMSALE SHIMANO GRX - Rear Derailleur

SHIMANO GRX - Rear Derailleur - SHIMANO SHADOW RD+ - 34T max low sprocket - 2x11-speed

and also keeps your internal wires and hoses from rubbing on the crank spindle

Stronger – Separate and lower attachment /adjustment bolt equates to stronger hold ensuring the chain cannot drop below the chain catcher

On the occasion of our anniversary

thin and highly resistant to damages and pressure

Shimano BT-DN300 Di2 Battery 12 Speed PSI SRAMSALE SHIMANO GRX - Rear DerailleurThe Shimano BT DN300 Di2 Battery (12 Speed) features the same waterproof design Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12 speed road derailleurs and shifters when a fully wired option is selected. The same size as its predecessor, the slim DN300 battery can be housed inside seat posts or frames for a clean aesthetic. The third port is for riders who want the redundancy of Shimano's 12 speed Di2