The ksyrium pro carbon sl carbon clincher wheelset is a lightweight carbon rimmed wheel designed for quick acceleration and fast climbs the 25mm tubular tyres dampen road vibrations to provide a high ride quality and comfort the refined itgmax brake tracks improve braking distances in both dry and wet conditions features wheelset weighs just 1520 grams superlight carbon rim 17c internal width and 25mm tyre increases air volume 25 mm deep rim dampens road vibrations isopulse and 24 sp