Shimano Ultegra 6870 Disc Di2 Groupset

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.

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.

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

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

For BB30 frames, we recommend using the Wheels Manufacturing BB30 Enduro Bearings. These are smooth-running bearings with a long lifespan and which are easy to replace. More information is available on the dedicated product page.

For Press Fit 30 frames, we recommend the Wheels Manufacturing PF30 Enduro Bearings. The machined bearing cups are extremely well-made, so no more creaking bottom bracket. More information is available on the dedicated product page.

We recommend the Shimano Di2 grommets for internally routed cables.

Find out more on our Blog

	Shimano Ultegra 6870 Disc Di2	Shimano Dura Ace R9100	Shimano Dura Ace 9000	Sram Red eTAP
	1 review	7 reviews	10 reviews	8 reviews
The way of gear shifting	Electronic	Mechanical	Mechanical	Electronic
Crank ratio	53 / 39 / 52 / 36 / 50 / 34	53 / 39 / 52 / 36 / 50 / 34	53 / 39 / 52 / 36 / 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 / 12 / 25
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
Type crankset (Axle)	Hollowtech II	Hollowtech II	Hollowtech II
	£1,329.50	£1,506.90	£1,012.58	£1,107.80
	This product	View product	View product	View product

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.