Shimano Ultegra R8050 11sp Di2 Road GroupsetThe Shimano Ultegra R8050 Di2 Groupset provides market-leading electronic gear shifting thanks to the Di2 system and trickle-down technology from professional-level Dura-Ace groupsets. 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.Maintenance-Free Electronic Gear Shifting PrecisionThe 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 customised your Di2 to shift to your preferences, it will continue to do so endlessly.Synchro Shift for Outstanding Cycling PerformanceSynchro 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.Low Profile, Reliable and Efficient Di2 E-Tube SystemThe 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 groupset 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 Ultegra R8050 STI Drop Bar Levers Drop bar STI with shift buttons Ergonomic design with greater reach Updated internal shifting unit Powerful and controllable braking system Multi-shift function Tuneable Reach and Free-Stroke adjustment Weight: 295gShimano Ultegra R8000 Brakes Sleek, Low-profile design Wider Tyre Clearance Compatible with Tyres up to 28c Improved braking efficiency and power Balance weight, stiffness and stopping power Stabiliser between axles reduces deformation and improves braking efficiency Weight: Front: 183g; Rear: 180gShimano Ultegra R8050 2×11 Speed Front Derailleur Designed to work with the wider gear pitch spacing Shimano chainsets without sacrificing shifting performance on bikes with 135 / 142 mm O.L.D. Rear Hub Spacing Precise and accurate shifting Fast and Smooth engagement Auto-Trim that centres the front derailleur as you shift across the rear cassette, avoiding chain rub Syncronised Shift Technology to communicate with Rear Derailleur to optimise performance Low-profile design 2×11 Speed Weight: 132gShimano Ultegra R800011 Speed Rear Derailleur Derailleur contains a saver (fuse) function Low-profile design Shadow RD Technology Syncronised Shift Technology to communicate with Front Derailleur to optimise performance High tolerance cold forged aluminium link plates and body construction Four self-lubricating micro-machined fluorine-coated link pivot bushings 11 Speed Compatible Weight: 242gShimano Ultegra R8000 11 Speed Chainset New 4-arm design for stiff, lightweight performance Weight reduction without any sacrifice to structural integrity or 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.