Mavic crossmax sl pro ltd wts wheelsetthe mavic crossmax sl pro is the first mountain bike wheel to use mavic patented ism 4d technology this means machining around the rim which reduces weight and inertia to offer a more dynamic ride featuresrimsmaterial maxtaljoint supdrilling foreweight reduction ism 4dvalve hole diameter 65 mmtyre ust tubeless and tubetypeinternal width 19 mmsize27 5disc brake specific profilespokesmaterial zicralshape straight pull bladednipples fore integ