The Shimano Dura-Ace FD-R9150 is the flagship Di2 electronic front derailleur, engineered for race-day precision. It delivers quick, smooth front shifts even under high pedalling torque, with fully programmed auto-trim that eliminates chain rub without any rider input — so you stay focused on the road, not your drivetrain.

Highlights

• Electronic Di2 shifting — fast, consistent front shifts under load
• Auto-trim function adjusts cage position automatically to eliminate chain rub
• Full and semi Synchronized Shift mode compatible
• Slimmer profile for reduced crash damage risk in race situations
• 10g lighter than the previous FD-9070 generation
• Braze-on mount for a clean, integrated fit
• Weighs just 104g

Electronic Intelligence

The FD-R9150 connects via a single SD50 E-Tube port, integrating seamlessly into the Dura-Ace R9150 Di2 system. Low-limit adjustment is handled electronically, and the derailleur supports firmware updates via Shimano's E-Tube Project software. Synchronized Shift allows the front and rear derailleurs to work in concert, giving you the experience of a 1x drivetrain with the range of a 2x setup — shifting the front automatically as you move through the rear cassette range.

Race-Ready Construction

Shimano's refined cage geometry on the FD-R9150 delivers a slimmer overall profile compared to its predecessor, lowering the risk of damage in a crash without sacrificing shift performance. Down-swing action and a precisely calibrated chain guide ensure consistent engagement across all chainring combinations.

Compatibility & Fit

The FD-R9150 is a braze-on front derailleur for 2×11-speed road drivetrains. It is compatible with Shimano 11-speed HG chains and supports big rings from 50T to 55T, with a total capacity of 16T. Chainline: 43.5mm. Chainstay angle: 61–66°. Compatible with Dura-Ace R9150 and Ultegra R8050 Di2 systems. Note: band-clamp adapter sold separately for frames without a braze-on front derailleur mount.