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Exclusive video: Shimano Dura-Ace Di2 11-speed

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Cancellara gets fitted with new electronic groupset

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The new four-arm chainring bolt circle is not radially symmetric. Instead, Shimano says the arms are aligned more with how forces are transmitted during the pedal stroke, adding more material where it's needed and removing it where it isn't. Replacement chainrings will almost assuredly be very expensive.

The new four-arm chainring bolt circle is not radially symmetric. Instead, Shimano says the arms are aligned more with how forces are transmitted during the pedal stroke, adding more material where it's needed and removing it where it isn't. Replacement chainrings will almost assuredly be very expensive. (Image credit: Jonny Irick)
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Swiss champion Fabian Cancellara (RadioShack-Nissan) shows the strain of a long, arduous day in the saddle.

Swiss champion Fabian Cancellara (RadioShack-Nissan) shows the strain of a long, arduous day in the saddle. (Image credit: Bettini Photo)
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Fabian Cancellara prepares for another training ride in Spain

Fabian Cancellara prepares for another training ride in Spain (Image credit: Tim Vanderjeugd/RadioShack-Nissan-Trek)
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Fabian Cancellara (RadioShack-Nissan) on the podium after stage2 in Tour de France 2012.

Fabian Cancellara (RadioShack-Nissan) on the podium after stage2 in Tour de France 2012. (Image credit: Sonoko Tanaka)
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Yellow jersey holder Fabian Cancellara (RadioShack-Nissan) at the start in Liege.

Yellow jersey holder Fabian Cancellara (RadioShack-Nissan) at the start in Liege. (Image credit: Sirotti)
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Fabian Cancellara leads by example at the RadioShack-Nissan team building camp.

Fabian Cancellara leads by example at the RadioShack-Nissan team building camp. (Image credit: Bettini Photo)

This video originally appeared on BikeRadar.

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Exclusive interview: Fabian Cancellara

Shimano Dura-Ace 9000 mechanical groupset review

In this exclusive video, BikeRadar gets a first look at the latest electronic groupset soon-to-be released from Shimano. The Dura-Ace Di2 11-speed ensemble was being fitted to Fabian Cancellara's RadioShack-Nissan Trek Domane.

A number of new features are discussed including the additional port made available at the Di2 lever for combined use of the ‘sprinter' shifter and the bar-mounted shifter often used for cobbled races. Shifting has undergone some additional changes which allow further adjustments.

The RadioShack-Nissan team was just one of five WorldTour squads who were fitted with the newest groupset with Cancellara taking part in pre-production testing program that begun just before the Vuelta a España. The groupset being fitted to the bike was the first production model.