The mavic ksyrium disc clincher wheelset is a lightweight and durable wheel tyre system with premium yksion elite tyres the lightweight and wide ism machined rims ensure low rolling resistance and increased comfort durable and dynamic the mavic ksyrium disc wheelset is constructed with straight pull bladed spokes to provide optimal stiffness the disc brake specific wheelset features 24 spokes front and rear for ideal brake torque distributionfeatureslight and wide ism machined welded rims