The RD-R8150 Ultegra Di2 Rear Derailleur is a high-performance component designed for precision and reliability in road cycling. Engineered for seamless electronic shifting, it enhances the riding experience with its quick and accurate gear changes. Ideal for competitive cyclists and enthusiasts alike, this derailleur ensures optimal performance across varied terrains.

Specifications:
- Electronic Di2 shifting technology
- Compatible with 12-speed drivetrains
- Shadow RD design for reduced profile
- Integrated chain stabilizer
- Weight: 262 grams
- Maximum sprocket: 34T
- Low-profile design for improved aerodynamics
- Easy setup and maintenance with E-Tube Project app compatibility