Shimano Ultegra Di2 TT Group Set 6870 / 6871 2x11 - Internal Cable Routing

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Description of Shimano Ultegra Di2 TT Group Set 6870 / 6871 2x11 - Internal Cable Routing

The battery, which is needed for this group, is not included because it cannot be shipped by air freight. For deliveries to EU, Lichtenstein, Switzerland and Norway, the battery can be ordered separately.

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.

Included parts:
- Ultegra Di2 ST-6871 2x11-speed TT-STIs
- Di2 SW-R671 shifter
- Ultegra Di2 RD-6870 2x11-speed rear derailleur
- Ultegra Di2 FD-6870 front derailleur 2x11-speed
- Ultegra BR-6800 brakes
- Ultegra FC-6800 crankset 2x11-speed Hollowtech II
- Ultegra CS-6800 11-speed sprocket
- Ultegra CN-HG700 chain
- SM-EW90-B Junction Kit
- Junction SM-JC41
- Charger SM-BCR2


Hubs, Botom Bracket and EW-SD50 cables not included! Please order separately.

Without Battery SM-BTR2

Notes:

In order to ensure proper functioning of the electronic Di2 drive system, all components require the same firmware version. The optional diagnostic device allows for reading out or updating the firmware version. An operation of components with different firmware versions may cause a malfunction or loss of function.

Operation requires additional EW-SD50 cables. These are not in scope of delivery. Please contact our service team for a suitable configuration for your system.

If you want more information about the individual components, please have a look at the components in the specific article group or contact our service team. For specifications of the group components such as an extension with time trial switches, please also contact the service team.
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Fact Sheet of Shimano Ultegra Di2 TT Group Set 6870 / 6871 2x11 - Internal Cable Routing

Product Name: Shimano Ultegra Di2 TT Group Set 6870 / 6871 2x11 - Internal Cable Routing
Manufacturer: Shimano Parts
Item Code: SHI166703
Material: aluminium, steel, composite
Derailleur: 2x11-speed
Crank length (mm): 170 mm
172.5 mm
175 mm
Chainwheel, number of teeth: 46-36
50-34
52-36
53-39
Front Derailleur Braze/Clamp: brazed-on
Derailleur max. number of teeth: 53
Bracket BSA/ITA: without
Bracket, profile of axle: Hollowtech II, integrated axle
Derailleur short/long: short
Derailleur, max. number of teeth: 28 teeth
Capacity of derailleur: 33
Nuance of sprocket / Gearing: 11-23
11-25
11-28
12-25
11-32
For sprocket ratio 11-32T a medium cage rear derailleur is required
Material of sprocket: steel, aluminium
Hubs: not included
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Sprocket Ratio
in stock, delivery time 1-3 daysShimano Ultegra CS-6800 Cassette 11-speed: 11-23
in stock, delivery time 1-3 daysShimano Ultegra CS-6800 Cassette 11-speed: 11-25
in stock, delivery time 1-3 daysShimano Ultegra CS-6800 Cassette 11-speed: 11-28
in stock, delivery time 1-3 daysShimano Ultegra CS-6800 Cassette 11-speed: 11-32
in stock, delivery time 1-3 daysShimano Ultegra CS-6800 Cassette 11-speed: 12-25
in stock, delivery time 1-3 daysShimano Ultegra CS-6800 Cassette 11-speed: 14-28
Chainring, number of teeth | Crank Arm Length
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 46-36 | 170mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 46-36 | 172.5mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 46-36 | 175mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 50-34 | 170mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 50-34 | 172.5mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 50-34 | 175mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 52-36 | 170mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 52-36 | 172.5mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 52-36 | 175mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 53-39 | 170mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 53-39 | 172.5mm
in stock, delivery time 1-3 daysShimano Ultegra FC-6800 Crankset 2x11 - grey: 53-39 | 175mm
Item includes
in stock, delivery time 1-3 daysShimano CN-HG701-11 Chain 11-speed
in stock, delivery time 1-3 daysShimano Ultegra BR-6800 Brakes - grey RW
in stock, delivery time 1-3 daysShimano Ultegra BR-6800 Brakes - grey FW
in stock, delivery time 1-3 daysShimano Ultegra Di2 RD-6870-SS Rear Derailleur 2x11 - short
in stock, delivery time 1-3 daysShimano Ultegra Di2 FD-6870 Front Derailleur 2x11
in stock, delivery time 1-3 daysShimano SM-JC41 Junction Box for Di2 - internal
in stock, delivery time 1-3 daysShimano Di2 SM-BCR2 USB-Charger for SM-BTR2 + BT-DN110 - black
in stock, delivery time 1-3 daysShimano Di2 SW-R671 Additional Shifter left
in stock, delivery time 1-3 daysShimano Di2 SW-R671 Additional Shifter right
in stock, delivery time 1-3 daysShimano SM-EW90-B Junction Kit for Dura Ace + Ultegra Di2 TT external
in stock, delivery time 1-3 daysShimano Ultegra Di2 ST-6871 STI 11-speed (right)
in stock, delivery time 1-3 daysShimano Ultegra Di2 ST-6871 STI 2-speed (left)
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