Ksyrium pro carbon sl t haute routethe lightest ksyrium ever reinvented with a wide carbon tubular rim now available in an exclusive and limited quothaute routequot edition with ceramic bearings newthis tubular version of the ksyrium pro carbon sl is the lightest ever member of the ksyrium family at just 1190g which makes it the best wheel for the fight against gravity on those long climbs saving power and making you faster in the long runour lightest ever ksyriumwe created our lighte