Shimano Dura-Ace Di2 RD-R9250 12-speed electronic rear derailleur

The Dura-Ace Di2 RD-R9250Shimano r is a top-of-the-range electronic rear derailleur designed for 12-speed Di2 drivetrains (Shimano ) on road bikes. Part of the Dura-Ace groupset, it combines electronic gear-changing, rapid shifting and seamless integration to meet the demands of cyclists seeking precise and high-performance operation.

Thanks to Di2 ‘Shimano ’ technology, gear changes are controlled electronically via compatible shifters. The RD-R9250 then ensures the chain moves across the cassette with great precision, enabling fast and smooth gear changes, particularly during acceleration, climbs or changes in pace.

Di2 technology for precision

The Dura-Ace RD-R9250 rear derailleur is a central component of the Shimano 12-speed electronic drivetrain. Its electronic operation delivers exceptionally direct gear-shifting control, without a mechanical cable between the shifters and the derailleur.

The RD-R9250 also incorporates several functions at the heart of the Di2 system, including communication with the various electronic components of the drivetrain and the management of gear changes. This design helps to achieve a clean cockpit and a perfectly coordinated drivetrain.

A derailleur designed for competition

The Dura-Ace groupset represents the pinnacle of the Shimano road range. The RD-R9250 is therefore aimed at cyclists who prioritise performance, precision and low weight, whether for competition, intensive training or a high-end build.

Its compact, integrated design contributes to the modern aesthetic of Shimano ’s 12-speed electronic drivetrains. The derailleur is also designed to work with compatible components from the Dura-Ace range and, depending on the configuration, with certain compatible Shimano Di2 12-speed components.

Expert tip: when fitting, take the time to check the drivetrain adjustment and the condition of the cassette and chain. A clean and correctly adjusted drivetrain allows you to take full advantage of the speed and precision of electronic gear changes.

The benefits of the Dura-Ace RD-R9250 rear derailleur

• Di2 electronic gear shifting for precise control.
• 12-speed for compatible Shimano -road drivetrains.
• Dura-Ace technology designed for high-end set-ups.
• Fast and smooth operation when changing gears.
• Seamless integration within the electronic drivetrain.
• A solution suited to competition and cyclists seeking a high level of performance.

Features of the Shimano Dura-Ace Di2 RD-R9250

• Brand: Shimano
• Range: Dura-Ace
• Part number: RD-R9250
• Technology: Electronic Di2
• Number of gears: 12
• Position: rear derailleur
• Use: road bike
• Control: electronic
• Drivetrain: 12-speed Di2 Shimano
• Function: rear gear shifting
• Range: competition / high performance