Shimano Di2 9071 TT ShiftersThe best shifting performance in existence. This is what electronic shifting promises and Shimano Dura Ace 9070 Di2 delivers. Never has a statement been said so confidently and easily, yet had such heavy implications for our sport. When the most important races of their careers are on the line the pros require the highest quality components to make those critical shifts fast, precise and effortless. It is no wonder why the Radioshack-Nissan-Trek team was just one of five World Tour Teams to outfit their race weapons with the newest 11-speed electronic groupset. Fabian Cancellara was so eager to get his hands on it that he took part in testing before production even started.
TT shifters are the perfect application for Di2 technology. Witness Shimano's Dura Ace 9071 TT shifters that skirt UCI rules on aero extensions by providing riders with an effectively longer extension that doesn't move like a mechanical shifter would. Voila` completely legal longer extensions. With just one button per shifter, Shimano kept their design simple and elegant. Dura Ace 9070's fully programable and expandable design allow for a bevy of setup options. With this one, most riders will opt to program the two buttons to control the rear derailleur and use the ST-9071 base bar brake lever/shifters to handle both front shifting and rear shifting when hands are placed on the bull horns. Choices, they are a beautiful thing.
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