In 2008 SHIMANO first introduced electronic shifting to road cycling in its Dura-Ace 7970 groupset. In 2011 it became available for Ultegra. Now it's also available in Ultegra 6800. Ultegra takes pro-tested technologies to a wider audience. Whether it is a mechanical or electronic shifting interface, Ultegra provides the highest quality outside professional racing.
The advantages of Di2 (Digital Integrated Intelligence) are clear for everybody who has tested it: changing gears becomes easier, effortless and faster by simply touching the shift buttons. Control at the top of your fingers. Additional benefits include an automatic trimming front derailleur, unmatched precision plus super easy installation and adjustment. This allows automatic chain guide movement in response to the gear position of the rear derailleur. There is no more need for concentration on trimming when riding.
Features in 6870 group:
The derailleurs are more compact and lighter than their predecessors. The rear derailleur is updated with an automatic protection system that moves the cage out of harm’s way in case of a crash. There are two versions of the rear derailleur. A SS for cassettes up to 28T and a GS for cassettes up to 32T. The 32T GS rear derailleur in combination with a compact front crank setup offer a full wide gearing setup. Both rear derailleurs are featured with multi shifting. With a single press and hold of the shift button the rear derailleur goes all the way up or down the cassette. Or, when programmed at the E-tube platform, two or three gear shifts. Also the speed of gear shifts can be adjusted. In five steps, from very slow to very fast.
- Ultegra Di2 ST-6870 2x11-speed STIs
- Ultegra Di2 RD-6870 2x11-speed rear derailleur
- Ultegra Di2 FD-6870 front derailleur 2x11-speed
- Junction SM-JC41
- Battery SM-BTR2
- Charger SM-BCR2
|Product Name:||Shimano Ultegra Di2 Upgrade-Kit 6870 2x11 - Internal Cable Routing|
|Front Derailleur Braze/Clamp:||braze on, additional clamp optional|
|Derailleur max. number of teeth:||53 teeth|
|Derailleur, max. number of teeth:||28 teeth
For sprocket ratio 11-32T a medium cage rear derailleur is required
|Capacity of derailleur:||33 teeth|