Shimano Ultegra DI2 RD-R8150 Rear Derailleur 12 Speed

The compact Dura-Ace 8150 rear derailleur delivers lightning-fast yet precise gear changes. Even under medium and high loads, thanks to the low profile design and Shimano Shadow + technology, gear changes are quick and without any major noise. There is no noisy crashing or rattling with these high-tech components! Despite its slim dimensions, the rear derailleur houses the battery charging port and the wireless mode button. With just one cage length, the rear derailleur shifts on cassettes from 11-30 teeth to 11-34 teeth and thus increases the versatility of the top component group of the Japanese.


TECHNICAL SPECIFICATIONS

Material: aluminum
Version: 12-speed
Compatibility: Shimano Ultegra ST-R8150, ST-R8170 shift lever
Total capacity: 39 teeth
Max.difference in front: 16 teeth (difference between smallest and largest chainring)
Max.largest pinion: 34 teeth
Min. largest sprocket: 28 teeth
Max. smallest pinion: 11 teeth.
Min. smallest pinion: 11 teeth
Fixing: direct mounting