Dura-Ace 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. Cutting edge technology for the ultimate in control & confidence. Rider-tuned means Dura-Ace works the way you want it. The new 11-speed cassettes are available in a range of sizes including a wide-range 11-28 option
- one cassette to use all year round. Smooth, fast shifting guaranteed. Key

Features: Hyperglide 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 a lightweight carbon carrier to reduce weight & increase rigidity. 16T & larger sprockets are made from titanium to reduce weight without sacrificing strength. Sprockets are extensively cut away & drilled to further reduce weight without reducing rigidity. Nickel-plated finish offers hard wearing resistance to corrosion. Alloy cassette lock ring. For Super Narrow 11-speed HG chains. For more information on how to keep your bike running smoothly, click here to see PBK's expert advice on taking care of your chains & cassettes.


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Dura-Ace 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. Cutting edge technology for the ultimate in control & confidence. Rider-tuned means Dura-Ace works the way you want it. The new 11-speed cassettes are available in a range of sizes including a wide-range 11-28 option
- one cassette to use all year round. Smooth, fast shifting guaranteed. Key

Features: Hyperglide 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 a lightweight carbon carrier to reduce weight & increase rigidity. 16T & larger sprockets are made from titanium to reduce weight without sacrificing strength. Sprockets are extensively cut away & drilled to further reduce weight without reducing rigidity. Nickel-plated finish offers hard wearing resistance to corrosion. Alloy cassette lock ring. For Super Narrow 11-speed HG chains. For more information on how to keep your bike running smoothly, click here to see PBK's expert advice on taking care of your chains & cassettes.


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Digital Integrated Intelligence. The eagerly awaited Shimano Di 2 (Digital Integrated Intelligence) is here. Evolution never stops
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Digital Integrated Intelligence. The eagerly awaited Shimano Di 2 (Digital Integrated Intelligence) is here. Evolution never stops
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Designed to give you smooth & fast shifting, the Shimano Dura-Ace Di 2 FD-9070 Front Derailleur
- 11 Speed features electrical
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Digital Integrated Intelligence or Di 2: with programmed automatic motion at the touch of a switch the Dura-Ace Di 2 rear derailleur is quick, smooth & 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 & replaces the handlebar junction Button on the derailleur for Di 2 operations, & LED light denotes synchronized shift mode, setting mode & charge requirements Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth & 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 & 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 & outer pulley plates enhance rigidity & reduce weight Titanium B axle bolt for further weight savings High tolerance cold forged aluminium link plates & body construction is extremely light & durable Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting Pulleys are made from tough Du Pont Zytel for longer life & less chain noise 12-speed E-tube Di 2 compatible ...

Quick, smooth & effortless to shift, the Shimano Dura-Ace Di 2 RD-9070 Bicycle Rear Derailleur
- 11 Speed provides programmed
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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. This adaptor means that you can mount your Di 2 braze-on front derailleur to a frame without a braze-on fitting. Key

Features: Shimano Di 2 component. Converts frames with no braze-on mount to accept braze-on Di 2 front derailleur. Clamp fits neatly around seat tube. Available in 31.8mm & 34.9mm.

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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. This adaptor means that you can mount your Di 2 braze-on front derailleur to a frame without a braze-on fitting. Key

Features: Shimano Di 2 component. Converts frames with no braze-on mount to accept braze-on Di 2 front derailleur. Clamp fits neatly around seat tube. Available in 31.8mm & 34.9mm.

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The evolution of perfection. The removal of traditional mechanical cables in favour of electrical wires, not only eliminates poor shifting caused by contaminants, corrosion & stretching, but provides effortless gear shifts. Key

Features: To ensure that the signal goes from the shifter to the derailleurs, the reliability of the electric cable has been proven by repeated field tests in various riding conditions, including extreme temperatures, rain, mud, & cobble stone roads. Dura-Ace Di 2 requires 2 cables: a handlebar cable set to connect the shifters to a battery indicator junction box or Flight Deck, & the other to connect the handlebar cable to the battery & derailleurs. The handlebar cable set is available in two types: one for use without a Flight Deck computer instead using a simple junction box to display battery life; the other is for use with Flight Deck. This handlebar cable set for non-Flight Deck use has specifically been developed to use with the TT spec ST-7971 & SW-7971 shifters & switches. Handlebar cables should not be cut to size or modified in any way. Reliable & secure water resistant connectors.

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