Shimano Dura-Ace Di2 R9250 Power Meter Groupset 2x12 40-54 W/ Disc Brake

The Shimano Dura-Ace Di2 R9250 Power Meter Groupset is a high-end groupset designed for road cycling. It features a 2x12 gear setup with a 40-54 tooth chainring range and disc brake calipers for powerful braking performance.

The Di2 refers to Shimano's electronic shifting system, which provides crisp and reliable shifting with the push of a button. This system allows for quick and precise gear changes, perfect for competitive road riding. The R9250 power meter is built directly into the crankset, allowing riders to measure their power output and improve their training. This data can be used to track performance, set training goals, and analyze workouts.

The disc brake feature provides excellent stopping power in all weather conditions, giving riders more confidence and control on the road. Disc brakes are becoming increasingly popular in road cycling due to their superior braking performance compared to traditional rim brakes. Overall, the Shimano Dura-Ace Di2 R9250 Power Meter Groupset is a top-of-the-line option for road cyclists looking to upgrade their bike's performance and gain valuable training data.

FEATURES

- performance measurement cranks (power meter)

- 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

- 10% more clearance for the 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 40-54)

Cassette                       : 11-30, 11-34

Front Derailleur            : braze-on

Rear Derailleur             : long cage