MAVIC WHEEL PAIR KSYRIUM 30 CL HG11"The Ksyrium 30 Disc is a perfect entry point into high level race performance. This all new UST Road Tubeless system delivers a smoother ride and improved puncture resistance while retaining a lightweight feel for climbing and accelerating. By removing the tube, weve also removed friction, so theres less rolling resistance, which means it requires less energy to reach higher speeds. The 30mm deep rim optimizes aero performance and improves stability