The legacy wheel of the disc brake compatible ksyrium family now gets wider rims and a stepped up finish for improved ride quality newwhen disc brake technology started to appear on road wheels it was natural for us to develop a disc compatible version of our iconic ksyrium pro after all this do it all wheel is the best choice for most rides flat or hilly training or racingthe difference with discsfirst up we needed to take into account the very different forces at work with a disc brake an