Why change a winning formula? With the XC903, Shimano adds a very competitive shoe to an already illustrious list. Many world champions won their title using this shoe's predecessors. So why would you ever alter this perfect shoe? Cycling changes constantly, XC and cyclocross included. The competitions are becoming even more exhausting, and the best participants distinguish themselves early on during races. These rapid changes require shoes which can handle this. With the XC903, you're optimally prepared for everything the average off-road competition can throw at you.