Shimano Dura-Ace Di2 R9250 2x12 34-50 Groupset W/ Disc Brake

The Shimano Dura-Ace Di2 R9250 2x12 34-50 Groupset with Disc Brake is a top-of-the-line electronic shifting groupset designed for road cyclists who demand the best in terms of performance and reliability. The groupset includes both front and rear derailleurs, shifters, brakes, crankset, cassette, and chain, all designed to work seamlessly together for smooth and precise shifting.

The Di2 electronic shifting system provides quick and accurate gear changes at the push of a button, with no cable stretch or maintenance required. The 2x12 setup offers a wide range of gear ratios, with a compact 34-50t crankset and a diverse cassette range. The disc brakes provide powerful and consistent stopping power in all weather conditions, offering increased modulation and control compared to rim brakes. They also feature Shimano's Ice Technologies for improved heat dissipation, reducing the risk of brake fade on long descents.

Overall, the Shimano Dura-Ace Di2 R9250 2x12 34-50 Groupset with Disc Brake is a top choice for road cyclists who want the ultimate in performance, precision, and reliability.

FEATURES

- battery mounting internally in the seatpost (adapter required), 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

- brake caliper with 10% more clearance for brake pads

SPECIFICATIONS

Series                            : Dura-Ace Di2 R9250

Application                   : Road, Triathlon & Time Trial

Shifters & Derailleurs  : 2x, 12-speed (electronic, semi-wireless)

Brakes                          : disc, hydraulic (flat mount)

COMPONENTS

Crank                           : 170.0 mm, 172.5 mm, 175.0 mm (gradation 34-50)

Cassette                       : 11-30, 11-34

Front Derailleur           : braze-on

Rear Derailleur            : long cage