Riders like John Degenkolb, Michael Matthews and Vasily Kirienka have already been using the original R321 to power to victory in races such as Paris-Roubaix, Milan-San Remo, and two stages of this year’s Giro d’Italia. So it already has an impeccable race pedigree. But now, 40 riders from teams including Orica GreenEDGE, Giant-Alpecin, Team Sky, Team LottoNL-Jumbo, IAM and Cannondale-Garmin are waiting to put the R321B to the test in this year’s Tour de France. We’re tempted to say, may the best shoe win.