The legacy wheel of the disc brake compatible ksyrium family now gets wider rims and a stepped up finish for improved ride quality weight 1595 grams pair without tyre improved ride quality 17 mm internal rim width increases air volume large volume griplink and powerlink tyres increase comfort rolling efficiency and grip zicral spokes and fore drilling improves lateral stiffness low weight and high efficiency ism 4d rim machining makes for superlight rims zicral spokes and instant drive 360 f