Shimano's Dura-Ace C50 Carbon Clincher Wheels are a great upgrade to take your road riding to the next level. They're perfect for your local group rides, that epic grand fondo or full-on racing, whether you enjoy flat, fast criteriums, hilly road races, or beating the clock in time trials. The 50mm-deep rims are made of carbon with aluminum brake tracks for a sweet blend of lightness plus durability. These light, stiff, agile wheels rocket up to speed, flatten climbs and cheat the wind saving you energy and adding free speed on every ride. These wheels also boast top-of-the-line Dura-Ace hubs and bladed spokes for even more energy savings.