With it, Shimano and the cycling community celebrate the rebirth of the Di2 technology on their flagship model. And they do it at the highest level. Thanks to modern wireless control, to an impeccable functionality, to the 12 -speed transmission and the now usual excellent construction quality, you can switch from one victory to another and give the competition to be twisted. The new XTR crack will also do its part. The renewed and captivating design already suggests that it is a winning component. The cross country version shines for low weight and at the same time for exceptional rigidity. This result was achieved thanks to the evolution of the tested Shimano cold forging process, which optimizes the use of materials while guaranteeing high stability. In addition, the hard surface ensures excellent resistance to external agents or stones projected while driving. Both the standard of the Hollowtech II axis have been maintained and the editing of the crowns via a ring. The q factor q of 168 mm offers the biker a relaxed leg position, and the pedagles do not touch the rear sheaths even with a slightly wider rear wagon.