SHIMANO DURA-ACE DI2 R9250 POWER METER GROUPSET 2X12 40-54 WITH DISC BRAKE

FEATURES :
• performance measurement cranks (power meter)
• battery mounting internally in the seatpost, running time approx. 1000 km
• CR1632 battery in STI for wireless 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
• 10 % more clearance for the brake pads

SPECIFICATION :
Series: Dura-Ace Di2 R9250
Application: Road, Triathlon & Time Trial
Gearing: 2-speed, 12-speed (electronic, semi-wireless)
Brakes: disc, hydraulic (flat mount)
Crankset: 170.0 mm, 172.5 mm, 175.0 mm (gradation 40-54)
Cassette: 11-28, 11-30, 11-34
Front Derailleur: braze-on
Rear Derailleur: long cage