Shimano Ultegra 6870 Disc Di2 Groupset

Crank ratio
Cassette ratio
Crank Length
£1,371.90  £435.90 discount
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  • Free tracked delivery
  • Trustpilot review 9.4
The way of gear shifting
  • Electronic
Front derailleur
  • Braze-on
Brake type
  • Disc brake
Type crankset (Axle)
  • Hollowtech II
Number of gears
  • 11-speed
Colour
  • Black

The Shimano Ultegra 6870 Disc Di2 groupset offers the ultimate combination of brake- and shifting performance. Perfect to build a cyclocross or spring classics bike with! No longer depend on fair weather to get optimal brake- and shift performance. Instead, build yourself a more controllable bike for fast descends and make sure you never miss a shift again even when you're hammering up a climb.

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Delivery includes

• Disc brake shifters: Shimano ST-R785 Di2 2 x 11 speed
• Filled brake lines, to be connected at the bars
• Crank set: Shimano Ultegra 6800 FC-6800
• Front derailleur: Shimano Ultegra FD-6870 Di2, braze on
• Rear derailleur: Shimano Ultegra RD-6870 Di2
• Flatmount brake calipers Shimano BR-RS805, compatible for 140/140 rotors with the included adapter
• Cassette: Shimano Ultegra CS-6800 11-speed
• Chain: Shimano Ultegra CN-HG701 11-speed
• Wire holder EW-SD50 E-Tube for DI2
• Junction-A SM-EW90-A 3 port
• Shimano Di2 cables 3 x 350, 2 x 650, 1 x 1000
• Internal battery

We recommend ordering a battery charger with this groupset, should you not already have one:
- Shimano DI2 interne batterijlader

We recommend using the Shimano TL-EW02 Di2 Cable Tool for installing and removing Di2 cables:
- Shimano TL-EW02 DI2

Shimano recommends the following bottom bracket bearings with this groupset:
- Ultegra 6800 SM-BBR60 BSA/ITA
- Shimano BB72 PressFit

For BB30 frames, we recommend using the Wheels Manufacturing BB30 Enduro Bearings:
- Wheels Manufacturing BB30 Enduro Bearings

For Press Fit 30 frames, we recommend the Wheels Manufacturing PF30 Enduro Bearings:
- Wheels Manufacturing Press Fit 30 Enduro Bearings

We recommend the Shimano Di2 grommets for internally routed cables:
- Shimano Di2 Grommets

Find out more on our Blog

Bottom Brackets and Bottom Bracket Shells

21 June
Shimano Ultegra 6870 Disc Di2 Shimano Dura Ace R9100 Shimano Ultegra R8050 Sram Red 22
Shimano Ultegra 6870 Disc Di2 Shimano Dura Ace R9100 Shimano Ultegra R8050 Sram Red 22

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8 reviews
The way of gear shifting Electronic Mechanical Electronic Mechanical
Crank ratio 53 / 39 / 52 / 36 / 50 / 34 53 / 39 / 52 / 36 / 50 / 34 53 / 39 / 52 / 36 / 50 / 34 / 46 / 36 53 / 39 / 50 / 34
Cassette ratio 11 / 23 / 11 / 25 / 11 / 28 / 11 / 32 / 12 / 25 / 14 / 28 11 / 25 / 11 / 28 / 11 / 30 / 12 / 25 / 12 / 28 11 / 25 / 11 / 28 / 11 / 30 / 11 / 32 / 11 / 34 / 12 / 25 / 14 / 28 11 / 25 / 11 / 26 / 11 / 28 / 11 / 30 / 11 / 32
Front derailleur Braze-on Braze-on Braze-on Braze-on
Brake type Disc brake Traditional Rim Brake / Direct Mount Front and Bottombracket Rear / Direct Mount Front and Rear Traditional Rim Brake Traditional Rim Brake
Type crankset (Axle) Hollowtech II Hollowtech II Hollowtech II BB30 / GXP
£1,371.90 £1,463.40 £1,371.90 £1,371.90
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Kasper 5 March, 2017

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Detailed product description

The revolutionary Di2 electronic shifting system with SEIS (Shimano Electronic Intelligent System) takes the current, high-end Shimano shifting technology to a whole new level, never seen before. The increased accuracy, smoothness and reliability of electronic shifting makes changing gears even quicker and eliminates virtually all botched shifts.

This innovative shifting technology is based on the well-known Shimano Index System (SIS). The Di2 technology relies on electrical signals rather than mechanical transmission to get the shifting input across to the derailleurs.