Shimano Dura-ace FD-R9250 DI2 Front Derailleur 12-SPEED

The FD-R9250 Dura-Ace Di2 Front Derailleur by Shimano - Slimmer, flatter, lighter.

The FD-R9250 electronic front derailleur for the Dura-Ace Di2 2x12-speed road bike groupset from Shimano has a more compact design than its predecessor, and is therefore even more aerodynamic. Thanks to baffles made of lightweight aluminium, there is a weight advantage of approx. 15 grams compared to the Ultegra model. With a total capacity of 16 teeth, this allows large chainrings with a maximum of 50 to 54 teeth to be shifted, whereby the shifting speed has been increased enormously compared to the past. The front derailleur is compatible with a chainline of 44.5 mm and is designed for braze-on mounting. With the help of a suitable adapter, however, it is also possible to mount a clamp on the frame. It is connected to the battery via a cable, which in turn is also connected to the rear derailleur and, if applicable, the STIs. Of course, FD-R9250 has the proven Synchro and Semi-Synchro Shift function, which enables an automated interaction with the rear derailleur and thus makes shifting easier.


SPECIFICATIONS

Series: Dura-Ace Di2 R9250
Application: Road, Triathlon & Time Trial
Gearing: 2x (combined w/ 12-speed)
Chainstay Angle: 61 - 66degree
Chainline: 44.5 mm
Chainring Size (max.): 50 - 54 teeth
Capacity: 16-tooth
Movement: down-swing
Mount: Braze-on
Compatibility: HG 12-speed chains



TECHNICAL INFORMATION

Outer Body Material: Aluminium
Inner Body Material: Steel
Cage Material: Aluminium
Number of E-Tube Ports: 1


COMPATIBILITY

Power Cable: EW-SD300-I (1 x connection)
Shift/Brake Lever: ST-R9250, ST-R9270, ST-R9160, ST-R9180, ST-R8150, ST-R8170, ST-R8060, ST-R7170
Crank: FC-R9200 (34-50, 36-52), FC-R9200-P (34-50, 36-52), FC-R8100, FC-R8100-P, FC-R7100, FC-RS520
Chain: CN-M9100, CN-M8100, CN-M7100, CN-M6100
Clamp Adapter: SM-AD91



FEATURES

- High shifting speed: 45 % faster than FD-R9150
- Slimmer, flatter and lighter than predecessor
- Front area reduced by 33 %, thereby less wind resistance
- Connected to battery via cable
- Fully- and semi-synchronous shift mode adjustable (via E-Tube or rear derailleur)
- Firmware updates via E-Tube Project
- 4 joint bushings
- Outer parallelogram anodised
- Inner parallelogram and baffles plated