Shimano DURA-ACE R9270 12sp Di2 Hydraulic Shifter + Caliper Choose:Front, Flat mount, 140 or 160mm (not included), 175g, Black, IR9270DLF6SC100E Long battery life (400+ hours)

Long battery life (400+ hours) to power a season of rides

Personalization is quick and intuitive

two-way ratcheting mechanisms

BR-M785 / SLX BR-M7100

or Light Action

Shimano DURA-ACE R9270 12sp Di2 Hydraulic Shifter + Caliper Choose:Front, Flat mount, 140 or 160mm (not included), 175g, Black, IR9270DLF6SC100E Long battery life (400+ hours)With an all new mono body construction design, high performance braking has reached a new peak. The BR R9270 caliper drops weight while also providing increased pad clearance, ensuring a quieter ride. Lastly, a new bleeding process makes maintenance easier than ever. One piece structure maximizes stiffness and reduces weight 10% wider pad clearance decreases the chance of rotor rub Maintenance friendly bleeding process