SHIMANO DURA-ACE DI2 R9250 2X12 40-54 POWER METER GROUPSET
Features:
- performance measurement cranks (power meter) - battery mounting internally in the seatpost, running time approx. 1000 km - STIs for wired electronic shifting - front derailleur with more compact design than previous model, connected to battery via cable - rear derailleur with wireless chip, LED display, charging socket and function button, connected to battery via cable
