Shimano Ultegra R8070 Di2 11sp Road GroupsetThe Shimano Ultegra R8070 Di2 Disc Brake Groupset provides exceptional, market-leading electronic gear shifting thanks to the Di2 system. This system ensures shifting accuracy, which provides crisp and precise shifts with every push of a button. No adjustment is required once setup, instead of mechanical cables you have fully sealed, high-end Di2 electronic wires that relay your gear selection instantly; this truly is the essence of modern, electronic drivetrain efficiency.Exceptional Ultegra Hydraulic Disc Brake PerformanceThis groupset is also equipped with among the most advanced hydraulic disc brakes in the industry. For many years Shimano has been pushing the development of disc brake technology for mountain bikes, now this exceptional brake feel, modulation and superior braking power is available on road bikes.Electronic Synchronised Front and Rear Shifting ReliabilityFor the first time in an Ultegra groupset, Shimano’s innovative Synchro Shift is now available as a programmable Di2 option; Synchro Shift creates an intuitive experience with synchronised front and rear shifting, which can be custom programmed. With ‘full’ and ‘semi’ Synchro Shift available, this intuitive new mode automatically reacts when you shift from one chainring to another. Remove the guess work as your rear derailleur shifts automatically to minimise the gear step so you can keep riding with a smooth cadence and rhythm.Di2 E-Tube Unmatched Shifting PerformanceThe Di2 E-Tube system provides unmatched shift performance, reliability and rider customisation. Along with enhanced Di2 functionality, the front and rear Di2 derailleurs are connected via Shimano’s small EW-WU111 wireless unit allowing for an ANT Private connection between the drivetrain and third party devices. These components can be connected to Shimano’s E-Tube software, which supports the programmable aspects of the Di2 electronic gear shifting system. Use the Bluetooth technology for seamless access on smartphones and tablets.Shimano ST-R8070 Ultegra hydraulic Di2 STI Drop Bar E-tubeShifters and Hydraulic Calipers Features: Drop bar STI with gear shift buttons Hydraulic brake lever with integrated Hydraulic reservoir tank Finely tuneable Reach and Free-Stroke adjustment Two ports for use with E-tube electric cables Kit contains two bled ST-R8070 STI levers, BR-R8070 flat mount brake callipers with pads, hoses and mineral oil (without rotors or adapters)Shimano Ultegra R8050 Di2 11 Speed Front Derailleur E-tube Designed to work with the wider gear pitch spacing Shimano chainsets without sacrificing shifting performance on bikes with 135 / 142 mm O.L.D. Precise and accurate shifting Low-profile design 11 Speed E-tube Di2 compatible Weight: 132gShimano Ultegra R8050 Di2 11 Speed Rear Derailleur E-tube Derailleur contains a saver (fuse) function High tolerance cold forged aluminium link plates and body construction Four self-lubricating micro-machined fluorine-coated link pivot bushings 11 Speed E-tube Di2 compatible Weight: 242gShimano Ultegra R8000 11 Speed Chainset New 4-arm design for stiff, lightweight performance Hollowtech II construction Hollowglide chainrings 11 Speed Compatible Bolt Circle Diameter (B.C.D): 110mm Compatibility: Frames with O.L.D. 135 / 142 mm and 410mm chainstay length Weight: 690gShimano Ultegra R8000 Ultegra 11 Speed Cassette For use with 11 Speed HG-EV chains Advanced, optimised shifting performance Weight: 232gShimano Ultegra HG701 6800 11 Speed Chain Sil-Tec surface treatment technology (PTFE plating) Zinc-Alloy plated outer links 5.62mm chain width Weight: 257gShimano Di2 E-tube Electric Wires 300mm x 1 350mm x 2 600mm x 1 700mm x 1 1000mm x 1Electronics SM-EW90-A E-tube Di2 Junction Box-A, 3 port and the M-JC41 E-tube, Di2 bottom bracket Junction for internal wire routing Di2 internal mount battery Di2 internal battery charger direct to SM-EW90 Junction (one hour charge time)Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.