SHIMANO’s Ultegra Di2 6870 groupset provides the highest quality outside professional racing.
SHIMANO’s Ultegra Di2 series with electronic shifting is "pro-proven" as it is a direct trickle down from the Dura Ace group. It stands for state-of-the-art technology, proven in pro races, the technologies used in the new Ultegra 6870 series 11 speed included newly designed brakes and new chain treatment. The electronic shifting lets you concentrate on your performance.
The DNA for both the mechanical and electronic version of the group is the same. They share the same 4-arm cranks, 11-speed cassettes, dual pivot brakes, Sil-tec chain and 11-speed wheels. What makes them different is the shifting interface (shift lever and derailleur’s). Where Ultegra 6800 uses the well known mechanical parts and cables, Ultegra 6870 (Di2) uses an electronic shifting system.
With a unique four-arm spider and Hollowtech II construction putting strength just where it’s needed, the FC-6800 chainset sets new standards for stiffness and low weight.
Dual Control Levers with new ergonomic design for long rides and fast accurate electronic shifting. Compared to the previous Ultegra Di2 (6770) Shimano have improved the ergonomics of the dual control lever for easier access. Especially on top of the – slimmer – hoods riders have more control than ever. Also the shape of the shift button is improved and the contrast of the surface is more recognisable
The derailleur’s 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 derailleur’s 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.
Long, fast descents demand confidence. Ultegra brakes deliver, with a new symmetrical dual pivot design and twin bearings reducing pivot friction and improving efficiency and controllability.
The new symmetrical Ultegra 11-speed 116 link chain offers low weight and high durability.
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