Shimano Dura-Ace FD-R9250

The Shimano Dura-Ace FD-R9250 is the fastest and most sophisticated front derailleur Shimano has ever engineered. As a core component of the 12-speed Di2 ecosystem, it features a frontal area reduced by 33%, significantly decreasing aerodynamic drag and weight. Shifting speed has been increased by 45% compared to the previous generation, resulting in near-instantaneous chain movement even under high pedaling loads. With its integrated electronic intelligence, the FD-R9250 eliminates the need for manual trimming, automatically adjusting its position to prevent chain rub as you move through the rear cassette.

Key Features

• Ultra-Fast Shifting: A redesigned high-torque motor delivers the fastest front shifts in Shimano's history (45% faster than R9150).

• Compact Aerodynamic Profile: 33% smaller frontal area reduces wind resistance and provides better clearance for wider tires.

• Auto-Trim Technology: The derailleur communicates with the rear system to automatically adjust its cage position, ensuring a silent drivetrain in every gear combination.

• High-Rigidity Cage: Optimized for the high-torque shifting required by professional sprinters and climbers.

• Plug-and-Play Integration: Connects via the SD300 wiring system for simplified setup and maximum weather resistance.

Specifications

• Drivetrain Speeds: 2x12 Speed Di2

• Top Gear Teeth: 50T - 55T

• Chainstay Angle: 61° - 66°

• Chainline: 44.5mm

• Mounting: Braze-on

• Wiring System: EW-SD300

Typical Components Included

• FD-R9250 Front Derailleur

• Backup Bolt (for frame support)

• Setup Tool

• User Manual