We developed the ksyrium disc to meet the unique demands of putting disc brakes on a road bike as with all ksyrium wheels it can handle long hard miles like no other with the versatility to take anything you can throw at it ksyrium ride quality it shares the same dna as its rim brake equivalent famous for its amazing ride quality which is all down to the light welded rim extrusion and the smooth and strong qrm bearings specific disc specs however we needed to make adjustments to mee