* The NACA rim profile is 64mm deep and 26mm wide with an airfoil shape that is proven through wind-tunnel testing to produce the lowest possible drag without sacrificing its stability. * To minimize friction between the tire and the road, Mavic uses their Road Tubeless system with the new Yksion Pro UST tubeless tire. * Eliminating the tube greatly reduces friction inside the tire, giving you 15% better rolling efficiency. So you roll that much faster using the same amount of energy. * The rims are engineered with iTgMax carbon rim technology, and this version is purpose-built for disc brakes.* The system comes with Yksion Pro UST tires that provide a simple, hassle-free tubeless road setup.