A light and sturdy wheel tyre system for disc brakes with high end yksion elite tyres and wide and light ism rims weight 1890 grams pair without tyre light and wide ism machined welded rims 17c internal rim width for low rolling resistance and extra comfort with 25mm tyres light yksion elite tyres stiff and dynamic isopulse lacing optimized bearing placement straight pull bladed spokes deliver optimal stiffness smartly adapted to disc brake 24 spokes front and rear for perfect brake torqu