Mavic ksyrium pro exalith haute route wheelsetthe ksyrium pro exalith wheels are designed to provide an exceptionally stiff high quality wheelset that is capable of making hill climbing sections easier to conquer whilst also providing consistently reliable stopping power climbing wheelsthe ksyrium range of wheels are selected annually by amateur and expert riders when tackling some of the most difficult steepest and highest altitude events in the world and this version of the ksyrium pro exal