Shimano Ultegra Di2 rear derailleur RD-6870 SS short cage Shadow
Di2 2 x 11 times - now also in the Ultegra series
With the electronic Di2 version in the Ultegra group another feature from the TOP group Dura Ace is taken. With an actuator the chain changed without any use of force the pinion. Even among middle and high loads, is carried out thanks to low profile design and Shimano Shadow RD technology, the gear changes quickly and without too much noise. Noise end crash or clank does not exist for Ultegra Di2 components!
Now Due to the innovative design of the RD-6870 short cage derailleur the wider range of cartridges with a gradation of 11-28 teeth can be used.
Format: 11-speed, short cage
Compatibility: 11-speed Shimano Dura Ace ST-6870, ST-6871, SW-R610, R600 SW
Total capacity: 33 teeth
Max. Differential front: 16 teeth (difference between the smallest and largest chainring)
Max. Largest sprocket: 28 teeth
min. Largest sprocket: 23 teeth
Max. smallest sprocket: 14 teeth
min. smallest sprocket: 11 teeth
Delivery: 1x derailleur