Ksyrium has always been synonymous with great overall performance and exceptional reliability. True to its precedent of offering the high end technlogies usually reserved for only top of the line models, Ksyrium takes another step forward to achieve weight savings matched by only a few wheels. Now even lighter, even more responsive, and still as strong thanks to new rims, superlight hubs and spokes and the new extra light Yksion Pro tire. The most demanding racers need a do it all Wheel-Tire System. Ksyrium brings all these characterictics together.