Shimano Dura-Ace Di2 R9270 2x12-speed Upgrade Kit Disc
In the Di2 Dura-Ace shifting systems from SHIMANO, wireless technology is used wherever it seems appropriate for everyday riding and for ultimate sporting performance. The separation of the physical connection between the shift levers and rear derailleur allows for a tidy cockpit and also simplifies the assembly process. At the same time, the connection of the shifting components with an internal battery ensures absolute reliability thanks to the stable power supply.

Includes: Shimano Duras-Ace Di2 R9270 2x12-speed Upgrade Kit Disc Flat Mount

*Crankset and disc rotors RT-MT800 Center-Lock not included!

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Shimano Dura-Ace Di2 RD-R9250 12-speed Shadow Rear Derailleur

The Shimano Dura-Ace RD-R9250 12-speed rear derailleur not only provides the fastest and most precise shifting performance on the market, but is also more flexible than ever before. Available in one cage length, the rear derailleur is now compatible with 11-34T and also 11-30T cassettes. The compact rear derailleur contains the wireless unit, the charger and the mode button - and has a lot going for it!

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Shimano Dura-Ace Di2 FD-R9250 2x12-speed Front Derailleur Braze On

The Shimano Dura-Ace Di2 FD-R9250 2 x 12-speed front derailleur incorporate these new cockpit functions. The electronic front derailleur is compact and designed to protect the shifting operation in the event of a crash. The Dura-Ace R9250 front derailleur is more compact than ever and a genuine power unit. The front derailleur switches perfectly seamlessly between the chainrings and performs its shifting operations with digital precision in all conditions. In addition, the front has been reduced, thus optimising aerodynamics.

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Shimano Dura-Ace CS-R9200 12-speed Cassette

The Shimano CS-R9200 is the suitable cassette for new Dura-Ace R9200 12-speed group. The most advanced drivetrain is 100 % performance focused and truly revolutionary thanks to the HYPERGLIDE+ technology. The smooth shifting of the Dura-Ace R9200 12-speed cassettes lets you climb, sprint or roll along without having to think about the next change of speed. Larger teeth maximise drive efficiency and are at the same time compatible with existing 11-speed freewheels. The cassette is available in two versions: 11-30T and 11-34T.

HYPERGLIDE+ cassettes revolutionized off-road shifting with its seamless shifts both up and down the gear range. Now it's time for the technology to change road cycling. Even during maximal efforts up a climb or racing a friend, riders no longer need to back off to perform a shift. In any gear, Shimano Dura-Ace R9250 drivetrains maximize efficiency thanks to larger cogs and retain compatibility with existing HYPERGLIDE FREEHUB bodies. All this while increasing to 12-gears, Dura-Ace CS-R9200 cassettes are the new paradigm in road shifting.

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Shimano XT CN-M9100 12-speed Chain with Quick-Link SM-CN910-12

The special design of the new Shimano XTR/Dura-Ace CN-M9100 12-speed chain ensures improved shifting performance and smoother running - even in rough terrain. The SM-CN910-12 Quick-Link closure, which is also new, makes installation easy.

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Technologies

SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEM
The SEIS innovative shift technology is still based on the SHIMANO INDEX SYSTEM (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics. This electronic shifting system has been extensively tested over past two years by several professional riders in all conditions possible, such as rain, mud, low temperatures, cobble stone roads and combinations of all of these at the same time. Shifting is executed by simply pressing the button. No power is needed to shift, which gives important advantages since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding instead on shifting. The shift system allows accurate and effortless shifting in difficult circumstances like when you have cold hands or when you are completely exhausted. Furthermore, the shifting performance will never be affected by contaminated or stretched cables since the shifting signal is transferred electronically. The operating buttons work similarly to mechanical Dual Control Levers so you don’t need to re-program your mind for a new system. 

E-Tube
E-Tube platform offers optimum flexibility on your bike. E-TUBE transmits interactive signals and power supply to each parts by “Plug & play” connection. E-TUBE is no rust, no stretch, no freeze and it ensures advanced low maintenance. And SM-PCE1 connects between PC and components to update firmware. Digital device stay the latest version with updating firmware for improve function.

Shimano Shadow RD 
The mechanism rear derailleur, SHIMANO SHADOW RD, is intended for more aggressive riding. Its super low profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.