The 12-speed ULTEGRA R8150 rear derailleur from SHIMANO offers the fastest and most precise shifting function at an attractive price and simplifies the selection thanks to the uniform cage length.
Thanks to our fastest and most precise shifting function, the new ULTEGRA R8150 12-speed rear derailleur is now more versatile than ever. The reason for this is the uniform cage length, which is compatible with cassettes with a largest sprocket of 28 to 34 teeth.

- fastest derailleur ever, 58% faster than FD-R9150
- Compact design with integrated wireless signal transmission unit, charger and switch
- LED status indicator (battery indicator, pairing, setting mode, etc.)
- Larger scope of translation
- Compatibility: Shimano Ultegra ST-R8170, ST-R8170 shifters
- Total capacity: 39 teeth
- max. largest sprocket: 34 teeth
- min. largest sprocket: 28 teeth
- max. smallest sprocket: 14 teeth
- min. smallest sprocket: 11 teeth
- Fastening: direct mounting
- Execution: 12-fold
- Weight according to the manufacturer: 262g

(Translated with Google Translate)