Shimano Ultegra 6870 Di2 11 Speed Road Groupset

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.

E-tube: The Ultegra 6870 products are build based on the E-tube platform and can be adjusted with the dedicated E-tube (project) software.

E-tube is SHIMANO's electronic shifting program where shifting functions can be customised. For example all the shift buttons can be individually programmed. Besides customisation, E-tube offers the possibility to upgrade components with firmware upgrades after its purchase.

Due to E-tube compatibility other shifting functions are available to Ultegra 6870 like Dura-Ace sprint and Roubaix shifters.

In contrast to mechanical shifting, E-tube allows a rider to install multiple shifting options on a single bike Ultegra FC-6800 Crankset: 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.

Ultegra FC-6800 Crankser, 50.34 or 53.39t Crank Arm Length: 172.5mm New 4-arm design for same stiffness with lighter weight Hollowtech II construction Hollowglide chainrings 11-speed compatible Same bolt circle diameter for compact and traditional double chainsets means that one crankarm fits all chainring sizes Bolt circle diameter: 110mm Chain line: 43.5mm Includes Hollowtech II Bottom Bracket SM-BBR60 BSA Weight: 775g (with BB) Di2 STI Dual Control Set ST-6870: 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 Programmable multi-shift function Extremely fast and precise shifting Clean cabling thanks to E-Tube Connection Low maintenance with long-lasting performance Cable connection: EW-SD50 Carbon brake lever Weight: 295g (Set) Ultegra Di2 Rear Derailleur RD-6870 SS: 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 cranksetup 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.

Fast and accurate shifting Automatic anti-crash mechanism, coupled in an emergency the cage from the motor 11-speed design Maximum sprocket 28 teeth Total capacity: 33 teeth Weight: 250g Ultegra Di2 Front Derailleur FD-6870 Braze On: Programmed Auto-Trim function The support screw provides a rigid platform to which the derailleur can be supported on the large chainring when transporting the chain Fast, quiet and accurate gear changes Chainstay angle: 61-66 degrees Max.

chainring: 46-53 teeth Chain line: 43.5mm 2-speed Mounting: Braze On Weight: 155g Ultegra Brake Set BR-6800: 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.

New SLR EV Technology 10% more power than BR-6700 Smooth and light operation with increased modulation Brake Pad Types: R55C4 Weight: 335g (Set) Ultegra Cassette CS-6800 11-25T: Rider-tuned means Ultegra works the way you want it Weight: 212g Ultegra 11-speed Chain CN-6800: The new symmetrical Ultegra 11-speed 116 link chain offers low weight and high durability.

ULTERGA redesigned SIL-TEC Chain for 11-Speed Weight: 253g Di2 Battery SM-BTR2-1 for internal mounting includes Di2 Battery Charger SM-BCR2: ***Internal battery holder needs to be purchased separately as the type of internal battery holder can be specific to some models of frames*** For built-in installation in the frame or seatpost High-power lithium-ion battery Long battery life (up to 2000km when fully charged) The charging time for completely discharged battery is just 90 minutes Battery: Lithium ion Nominal capacity: 500 mAh Weight: 50g standard Operating temperature range: During discharge: -10 degrees C bis 50 degrees C During charging: 0 degrees C bis 45 degrees C Nominal voltage: 7.4 V Di2 Electric Wire Set SM-JC41L2 L-Size Internal wire routing: 1 x Electric wire EW-SD50I (1200mm) 1 x Electric wire EW-SD50I (100mm) 1 x Electric wire EW-SD50I (700mm) 3 x Electric wire EW-SD50I (300mm) 1 x Junction 3 Ports SM-EW90-A 1 x Junction Box SM-JC41 internal.