Shimano Ultegra Di2 FD-R8150 Double Down Swing Front Derailleur

The Shimano Ultegra Di2 FD-R8150 front derailleur represents the evolution of electronic shifting for road bikes. Thanks to the integration of the new SHIMANO Di2 platform and HYPERGLIDE+ technology, this derailleur ensures extremely fast, precise, and silent front shifts, offering professional-level performance in all conditions.

Designed for Shimano Ultegra R8100 Di2 12-speed groupsets, the FD-R8150 Double Down Swing model ensures an even faster and smoother chainring transition compared to the previous generation, improving drivetrain efficiency and the riding experience.

The design has been completely revised to be more compact, aerodynamic, and lighter, helping to reduce air resistance without compromising rigidity and operational precision.

Main features

• Shimano Ultegra Di2 FD-R8150 electronic front derailleur
• Double Down Swing configuration
• Compatible with the new Shimano Di2 platform
• HYPERGLIDE+ technology for faster and smoother chainring changes
• Up to 45% faster chainring shifting compared to the FD-R9150 model
• More compact and aerodynamic design
• 33% reduced frontal area
• Low weight of only 116 g
• Compatible with chainrings with a maximum tooth count of 46-52 teeth

Technical specifications

• Model: FD-R8150
• Series: Shimano Ultegra Di2 R8100
• Type: Electronic front derailleur
• Configuration: Double Down Swing
• Technology: SHIMANO Di2 + HYPERGLIDE+
• Speeds: 2x12
• Weight: 116 g
• Frontal area reduction: 33%
• Shifting speed: up to 45% faster than Shimano FD-R9150
• Maximum chainring teeth: 46-52 teeth