Di2 Electronic shifting front and rear and Hydraulic Brakes
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The power and precision of Di2 is unmatched. It enables beautifully smooth shifting both front and rear. The lack of maintenance and adjustment is impressive: once you’ve customized your Di2 to shift to your preferences, it will continue to do so endlessly.
This groupset contains
The Hollowtech II crankset will help you transfer more power into speed. It offers weight reduction without sacrificing stiffness. It enables a wide range of gear combinations to suit your every need. Paired with the new front and rear derailleurs, your shifts will be so fast and reliable you’ll almost question whether they happened at all! The beautifully shaped crankarm, trickled down from Dura-Ace, is a tribute to the aesthetics of your bike.
The new FD-R8050 is redesigned to fit a wider gear pitch without sacrificing shifting performance. Quick and smooth front shifting is guaranteed under all circumstances, even when you’re shifting to the large chainring while riding out of the saddle. Due to SHIMANO SYNCHRONIZED SHIFT the front derailleur will shift automatically when the rear derailleur is shifted, allowing both derailleurs to work together efficiently. With SEMI-SYNCHRONIZED SHIFT it’s the other way around, with the rear derailleur shifting automatically when the front derailleur is shifted, obtaining optimal front/rear gear positioning. At the same time, Di2’s auto-trim feature will automatically centre the front derailleur precisely around the chain, avoiding chain rub as you move the chain across the cassette. This is how fast, precise and smooth your shifting can be.
The RD-R8050 will help you maintain race concentration through intuitive shift control. The new low-profile design of Shimano Shadow RD increases its shift stability and gives the rear derailleur a sleek and integrated appearance. Race endurance is guaranteed, through the optimized slant angle. The wide compatibility of two specific rear derailleurs (GS and SS) for cassettes 11-25T to 11-30T and 11-28T to 11-34T will secure a smooth ride in even the highest and steepest mountain areas.
The Shimano Ultegra ST-R8070 STI brake/shift lever set offers everything it takes to perfectly prepare your bike for the race against the time. The slimmer designed levers not only offer improved ergonomics and thus increased intuitive control. What’s more, the dual control levers (STI) give you the ultimate feeling of individual precision. Even with thick gloves on, you can clearly feel the separation between the shift buttons thanks to a more defined click feeling.
Superior choice is at the heart of our rider-tuned philosophy. With gear combinations 11-25T, 11-28T, 11-30T, 11-32T, 12-25T, 14-28T and 11-34T (CS-HG800-11) you’ll have all the options you need to tune your ride.
The hydraulic Ultegra BR-R8070 Flat Mount brake caliper offers perfect control for constant braking performance and aerodynamically integrates into your bicycle’s geometry.
Includes the following cable kit - EW-SD50 Wires - 300mm x1, 350mm x2, 650mm x1, 1000mm x1, 1400mm x1 & SMJC41 Junction Box