Digital Integrated Intelligence or Di2: with programmed automatic motion at the touch of a switch the Dura-Ace Di2 rear derailleur is quick, smooth and effortless, making for unmatched drivetrain efficiency The rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides ANT+ connection to 3rd party devises and replaces the handlebar junction Button on the derailleur for Di2 operations, and LED light denotes synchronized shift mode, setting mode and charge requirements Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shift Synchronized Shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching Low profile Shadow derailleur design Derailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts 11-34T wide gear ratio capacity will cater for compact setups as well as the traditional road double Full carbon fibre inner and outer pulley plates enhance rigidity and reduce weight Titanium B axle bolt for further weight savings High tolerance cold forged aluminium link plates and body construction is extremely light and durable Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting Pulleys are made of tough DuPont Zytel for longer life and less chain noise 12-speed E-tube Di2 compatible
Dura-Ace Di2 (Dual Integrated Intelligence) moves to the next generation. Tested in competition and taken to victory by pro riders in all conditions, including the 2012 Tour de France Team Sky. Di2 provides the opportunity for shifting from previously inaccessible areas, and the Sprinter Switches allow for rapid shifting while in the drops. Find your perfect gear without having to change your riding position. Key Features: The most advanced level of shifting technology: at the touch of a switch Dura-Ace Di2 is quick shifting, smooth, and effortless. The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shifts. Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold. Mount the Sprinter Switches anywhere on your handlebar to allow rear derailleur shifting in your preferred riding position. Weight: 10g (per pair, manufacturer claimed). Compatible with the FlightDeck computer, measuring important data such as heart rate, altitude, cadence, gear position, battery indicator and allowing you to customise the shifting action of the derailleurs.
Shimano Dura-Ace Di2 (Dual Integrated Intelligence) R671 are the next generation of TT/TRI Shifters. Put to the test in competition and used in victory by pro cyclists in every conditions, including road, across the pavé or mud. These 11-speed shifters have even been used by the 2012 Tour de France Team Sky. Triathletes and Time Trial cyclists won't need to choose a different shifter position, as Di2 makes multiple shift controls possible. The TT/TRI Shifters can be used on the base bars and satellite controls on aero extensions to pick the ideal gear for all riding positions. - A.D. Key Features: The most advanced level of shifting technology: at the touch of a switch Dura-Ace Di2 is quick shifting, smooth, and effortless The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shifts Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold These switches give the added option of being able to operate the gears from either the aero extension or the ST-9071 Dual Control brake levers Compatible with the FlightDeck computer, measuring important data such as heart rate, altitude, cadence, gear position, battery indicator and allowing you to customise the shifting action of the derailleurs Switches are supplied without electrical cables, as these need to be ordered separately to suit your frame Weight: 95g (per pair, manufacturer claimed)
With Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gearKey Features:The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shifts.Single button on each side of the shift lever only works with synchronized shifting.Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold.Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, and alloy expanding wedge clamp.TT / Triathlon bar STI allows shifting while braking and can be used with additional bar end switches.Brake lever pivot is positioned to be used with super SLR brake callipers.Finely tuneable reach adjusters for the levers enable custom fitment for all hands.Levers are supplied without electrical cables, as these need to be ordered separately to suit.For use with E-tube electric cables.Comes complete with SLR brake cable set.
Shimano Dura-Ace FC-7710 Chain Ring BoltsSpecifically for use with the Shimano Dura-Ace FC-7710 track chainset, these chainring bolts securely fix on its single speed chainring.Features: Compatibility: For use with Shimano Dura-Ace FC-7710 track chainset Size: M8x6mm Supplied as a set of 5Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Lightweight Dura-Ace quality chainring.
Dura-Ace grease is the same specification used as standard in the best quality Shimano bearingsSpecifically formulated to keep Dura-Ace components running smoothly and increase their lifeKeeps parts rust and corrosion freeActs as a barrier to prevent water from reaching bearings
The clad steel / alloy / steel rotor construction of the Shimano ice tech rotor allows heat generated from braking to radiate quickly through the aluminium core achieving surface temperature drops of around 50 degrees C. When used with Ice Tech pads surface temperatures can drop from around 400 to 300 degrees C, this provides great improvements in performance all around. Freeza rotors allow the alloy core to extend out from the braking surface as fins to the centrelock mount adapter to provide added cooling. Ice Tech rotors achieve long pad life, less noise and less fade due to improved heat dispersion. The Shimano dura ace disc rotors are durable lightweight and rigid, using the proven centrelock system giving increased strength and security with an easy set-up. Plus, the precision cut and drilled braking surface improve pad clearing in muddy conditions while aiding cooling under high load. Finally, the large alloy spider is highly rigid and lightweight support for the rotor surface.
Shimano Dura-Ace Octalink Track Bottom BracketCompatible with Shimano's Octalink crank arm interface, the Dura Ace track bottom bracket features a hollow spindle to reduce weight with ball and needle bearings supporting it to increase rigidity.Features: 22mm diameter hollow CrMo pipe billet axle reduces weight Splined interface provides a more rigid crank assembly compared to tapered counterparts Compound bearing structure - ball and needle bearings support the spindle to reduce flex Cartridge design is easy to install, and comes without seals to minimise resistance Average Weight: 173gA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Dura-Ace R55C4-A Carbon replacement cartridge insert ,For Carbon Rims,Genuine Shimano replacement part.
This Shimano Dura-Ace cassette is manufactured from a lightweight alloy and carbon fibre reinforced polymer spider that houses 6 alloy sprockets and 5 titanium sprockets. The largest sprockets are manufactured from titanium to keep the weight low. The sprockets are also extensively cut away and drilled to further reduce weight without reducing rigidity. The very best and quickest shifts are optimised on the Shimano Dura-Ace 11 speed cassette thanks to the Hyperglide (HG) EV sprockets that have a computer designed tooth configuration with contoured shift gates.
Shimano Dura-Ace R9100 11 Speed Front DerailleurThe Dura-Ace R9100 front mech has been redesigned to be smaller, more efficient and to provide faster and crisper shifting. The internal toggle mechanism provides greater clearance for larger tyres and it now features a built in cable tension adjustment bolt meaning there is no need for inline barrel adjusters.Features: Top Gear Teeth: 46-55T Chainstay Angle: 61-66 Chain Line: 43.5 Lighter and intuitive shifting operation Natural front shift lever stroke More ergonomic power curve Precise & easy front derailleur set up More cable routing options Integrated cable tension adjustment New link (Toggle) construction means there is no need for TL-FD90 and turning converter assembling Adjustable cable tension on the front derailleur Adapted for race specific frame design Available wider front gear pitch Shorter length of rear centre with O.L.D.135mm Weight: 69gA 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.