Shimano Dura-Ace 9000 11 Speed Groupset - 175mm-11/23-39/53 BSA

Since 1973, Shimano's Dura-Ace components have been at the forefront of pro racing and pro-level technology. Dura-Ace has continued its legacy of being proven in the peloton as well as serving as a launch pad for new technologies. Bradley Wiggins rocketed to victory in the 2012 le Tour de France powered by revolutionary 11-speed Dura-Ace. Now you too can own this cutting edge technology. Created by definitive Shimano engineering and the latest technology, the new 9000 series Dura-Ace mechanical road group utilises cutting edge technology for the ultimate in control and confidence. Key Features: 9001 STI Shifters Better controllability for multiple riding styles Smaller volume hood, better control from the hood position SLR-EV design Powerful and controllable braking system Carbon brake lever Shimano new inner cable reduces friction to achieve lighter and quicker shifting and braking operation Internal cable routing Small internal mechanical unit with 3D analysis Lighter steering action and a clean handlebar area Vivid Index shifting light effort, defined click engagement Reach adjust Weight: 365g Rear Derailleur Redesigned rear system with new spring mechanism Redesigned lighter, shorter and more equal shifting operation Carbon pulley plate Wide link design to reduce shifting deflection and increases rigidity giving precise shifting over an extended time period Max front difference 16T Max rear sprocket: 28T Total capacity: 33T Weight: 158g Front Derailleur (BSA threaded english standard) Next generation light effort front shifting Optimum spring tension provides feather light down shift Support bolt keeps correct position even when high torque pedaling Capacity: 16T Weight: 66g (FD-9000-F) Chainset Optimum power transfer & lighter weight maintains efficiency New chain guide design to reduce chain drop 4-arm construction crankset maintains high rigidity and reduces weight HOLLOWGLIDE chainrings maintain smooth shifting whilst reducing weight and increasing stiffness 110mm Pitch Circle Diameter for both compact and regular versions making gear ratio changes easy 50-34T/53-39T/54-42T/55-42T/52-36T/52-38T (New combination) Weight: 683g (53-39T, with Bottom Bracket) Braze-on fit as standard if your bike does not have a braze-on mount seat tube adapters are available Bottom bracket The bottom bracket bearings for the HollowTech II FC9000 crankset, which is the ultimate crankset for stiffness whilst keeping weight low for performance riding and racing Minimal bearing interface gives superbly smooth rotation Distinctive style that exudes quality and perfection Required for installation of FC9000 chainset, with a choice of English or Italian thread BB cups Chain Top of the range Dura-Ace Super narrow lightweight 11-speed HG-EV symmetrical design chain for smooth shifts and maximum durability Outer plate design has been developed to reduce the chance of chain suck Sil-Tec surface treatment technology (PTFE plating) that is smooth running and increases durability Hollow link pins offer great weight savings The inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling, increased rigidity and near silent running 5.62 mm chain width, optimised for 11-speed Super Narrow HG-EV drivetrains Average weight: 243g (114 Link) Cassette Super lightweight 11-speed HG-EV cassette with a rigid carbon and alloy carrier for excellent shifting even under the most demanding gear changes Hyperglide EV sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load Close ratio gearing allows a more efficient use of energy through finer cadence control Largest sprockets are mounted on lightweight alloy and carbon carriers to reduce weight and increase rigidity 5 largest sprockets are made from titanium to reduce weight without sacrificing strength Sprockets are extensively cut away and drilled to further reduce weight without red

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