Shimano Ultegra Di2 R8150 2x12-Speed Braze-On Front Derailleur

The Shimano Ultegra Di2 FD-R8150 front derailleur is an electronic front derailleur for road bikes with a 2x12-speed drivetrain. It suits riders looking for precise, fast shifts on frames with a braze-on mount.

• Di2 electronic shifting for 2x12-speed drivetrains, with no mechanical cable to adjust
• Lightweight: weighs 110 g, useful if you want to keep your bike's weight down
• Handles a difference of 16 teeth between the two chainrings
• Direct braze-on frame mounting, with down-swing action
• Check your frame: if it has no braze-on mount, the SM-AD91 clamp is required, sold separately

Technical specifications

• Model: Shimano Ultegra Di2 FD-R8150
• Drivetrain: 2x12-speed
• Mounting: Braze-on; SM-AD91 clamp sold separately for frames without a braze-on mount
• Action: Down-swing
• Chainline: 44.5 mm
• Capacity: 16 teeth
• Compatible cranksets: FC-R8100, FC-R8100-P, FC-R9200, FC-R9200-P, FC-R7100, FC-RS520
• Compatible shifters: ST-R8150, ST-R8170, ST-R8060, ST-R9250, ST-R9270, ST-R9160, ST-R9180, ST-R7170
• Compatible chains: HG 12-speed: CN-M8100, CN-M9100, CN-M7100, CN-M6100
• Di2 cable: EW-SD300-I (1 x connection)

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.