Ask jaroslav kulhav and hell tell youevery gram counts in cross country racing but with xc tracks becoming more aggressive than ever just being a flyweight wheel is no longer sufficient now wheels need to be as tough and stiff as they are light with all of the handling characteristics that seasoned xc riders have come to expect these days wheels need to be more like the new control slrim type carbon clincher 2bliss ready zero bead hook design black graphic under clear coat rim mater