Dura-Ace Di 2 (Dual Integrated Intelligence) moves to the next generation. Tested in competition & taken to victory by pro riders in all conditions, including the 2012 Tour de France Team Sky. Di 2 provides the opportunity for shifting from previously inaccessible areas, & 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 Di 2 is quick shifting, smooth, & effortless. The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion & stretching, & also provides effortless gear shifts. Simply pressing tactile buttons allows effortless & 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 Flight Deck computer, measuring important data such as heart rate, altitude, cadence, gear position, battery indicator & allowing you to customise the shifting action of the derailleurs.

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Shimano Dura-Ace Di 2 (Dual Integrated Intelligence) R671 are the next generation of TT/TRI Shifters. Put to the test in competition & 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 & Time Trial cyclists won't need to choose a different shifter position, as Di 2 makes multiple shift controls possible. The TT/TRI Shifters can be used on the base bars & 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 Di 2 is quick shifting, smooth, & effortless The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion & stretching, & also provides effortless gear shifts Simply pressing tactile buttons allows effortless & 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 Flight Deck computer, measuring important data such as heart rate, altitude, cadence, gear position, battery indicator & 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)


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Premium quality, precision engineered Dura-Ace track chainring, specifically designed to complement the Dura-Ace track chainset. Key

Features: Precision engineered nickel-plated aluminium Dura-Ace track chainring, for use with 1/2 x 3/32 inch chains. Durable & lightweight nickel-plated aluminium. Available in 44 to 54T sizes to fit 1/2" x 3/32" chain size. Dura-Ace track chainring fixing bolt pack also available. BCD: 144mm.

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Premium quality precision engineered Dura-Ace track chainring specifically designed to complement the Dura-Ace track chainset. Key

Features: Precision engineered nickel-plated aluminium Dura-Ace track chainring for use with 1/2 x 3/32 inch chains. Durable & lightweight nickel-plated aluminium. Available in 44 to 54T sizes to fit 1/2 x 3/32 chain size. Dura-Ace track chainring fixing bolt pack also available. BCD: 144mm.

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World renowned Dura-Ace precision. Hollow forged Dura-Ace crank set engineered for the light weight & rigidity that track racing demands. Key

Features: Engineered cranks designed for the rigours of the oval circuit. Hollow Tech hollow forged aluminium crank arms for light weight without compromising stiffness. Splined Octalink fitting for Dura-Ace bottom bracket to create a strong & rigid interface. Crank arms only, chainrings available separately. Weight: 505g (Manufacturer claimed). Available in 172.5mm crank arm lengths.

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Dura-Ace 7800
- one of cyclings icons. Key

Features: Replacement or upgrade chainrings Dura Ace 10-Speed


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Dura-Ace 7800
- one of cyclings icons. Key

Features: Replacement or upgrade chainrings Dura Ace 10-Speed


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Dura-Ace 7800
- one of cyclings icons. Key

Features: Replacement or upgrade chainrings Dura Ace 10-Speed


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The Hollow Tech II 10-speed Dura-Ace chainset offers the optimum balance of light weight & rigidity, making it the global choice for road racings elite riders. Shimano has raised the bar to a new level of performance with the development of a hollow outer chainring, giving vast improvements in rigidity & increased weight savings by trimming unnecessary material. The ultimate aluminium chainset, even lighter than many carbon chainsets. Key

Features: The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load. These industry leading Hollow Tech II cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, & improve strength. The teeth have been developed to work in conjunction with the CN7900 chain for enhanced contact providing more efficiency & enhanced power transfer. There is a wide range of chainring ratios & crank arm lengths available enabling customisation for all riders & racing disciplines. Hollow Tech II integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency. Weight: 739g (inc. bottom bracket
- Manufacturer claimed). Bottom bracket cups are sold separately.


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The Hollow Tech II 10-speed Dura-Ace chainset offers the optimum balance of light weight & rigidity, making it the global choice for road racings elite riders. Shimano has raised the bar to a new level of performance with the development of a hollow outer chainring, giving vast improvements in rigidity & increased weight savings by trimming unnecessary material. The ultimate aluminium chainset, even lighter than many carbon chainsets. Key

Features: The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load. These industry leading Hollow Tech II cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, & improve strength. The teeth have been developed to work in conjunction with the CN7900 chain for enhanced contact providing more efficiency & enhanced power transfer. There is a wide range of chainring ratios & crank arm lengths available enabling customisation for all riders & racing disciplines. Hollow Tech II integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency. Weight: 739g (inc. bottom bracket
- Manufacturer claimed). Bottom bracket cups are sold separately.


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