Shimano Dura-Ace FD-R9250 Di2 12-Speed Double Front Derailleur

Elite road racers demand reliable and precise shifting, 12-speed Dura-Ace R9150 delivers with its super-lightweight and compact design.

Despite its smaller, lighter design, the Dura-Ace FD-R9250 brings our fastest front shifting.

Our fastest just got faster thanks to the Dura-Ace FD-R9250. Tipping the scales under 100 grams, the new design shifts 45% quicker than Shimano's FD-R9150, already our fastest. The frontal area of the FD-R9250 is also reduced decreasing aerodynamic drag.

Technology

E-Tube

E-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano.

Shimano’s genuine application E-Tube Project Cyclist allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get the more detailed bike maintenance by connecting to your bike by wire with E-Tube Project Professional application.

HG Chain Design for HyperGlide+

HyperGlide+ dedicated chain delivers greater chain retention, improved shifting efficiency, and smoother transmission over rough terrain.

Benefits and Features:

• Improved chain retention encourages more aggressive all-terrain riding and relieves chain-issue anxiety
• Smoother drivetrain transmission and enhanced shifting performance sharpens riders’ concentration and improves acceleration
• Better chain engagement cuts abrasion, reduces maintenance, and lengthens the lifespan of the chain

Revamped HG chain features an extended inner link plate that connects seamlessly with new chainring tooth shape for ultra-efficient drivetrain performance.

This design change reduces the vibrations normally caused by the inner and outer chain plates rolling onto the chainring, and provides better chain engagement, stronger retention, and smoother pedalling.

Features

• Synchronized Shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur
• The Di2 front derailleur's operation is pioneering, smooth shifting is guaranteed thanks to wireless communication with the gear levers. What's more, shifting the rear derailleur automatically trims the front derailleur
• The biggest difference you will notice is just how much quicker and effortlessly smoother shifting on the front chainrings is, even under load
• The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts
• The front derailleur also trims automatically; the cage moves in response to the position of the rear derailleur on the cassette to ensure no chain rub and a quiet unobtrusive ride, enabling you to concentrate on the road ahead
• Braze-on fit as standard; if your bike does not have a braze-on mount seat tube adapters are available
• 12-speed E-tube SD300 wire compatible