Shimano's Dura-Ace C35 Carbon Clincher Wheels offer the perfect blend of lightness and aerodynamics for top performance on every type of terrain. They're ideal for everything from training and group rides, to setting a new PR on your favorite grand fondo, to taking your racing to the next level. The 35mm-deep high-modulus carbon rims with aluminum brake tracks keep the weight light for snappy acceleration and climbing, plus they provide a supple road feel for comfort. They are also plenty stiff for maximum power transfer when the hammer's down. And, these remarkable hoops boast top-of-the-line Dura-Ace hubs and bladed spokes for maximum energy savings and free speed.