SHIMANO Dura Ace Di2 rear derailleur RD-R9250 Shadow +
The compact Dura-Ace 9250 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 11-28 teeth to 11-34 teeth, thus increasing the versatility of the top component group of the Japanese. The built-in carbon composite rear derailleur cage ensures maximum weight reduction.
Technical specifications:
Material: aluminum, carbon composite
Version: 12-speed
Compatibility: Shimano Dura Ace ST-R9250, ST-R9270 shift lever
Total capacity: 37 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
Color: black, anthracite
Weight according to the manufacturer: 215g
Weight weighed: 217g
Scope of delivery: 1x rear derailleur