The mavic ksyrium pro exalith clincher wheelset provides the superior braking performance of exalith and a lighter wider ism4d rim to improve aerodynamics the ksyrium pro exalith is constructed with stiff and durable zicral spokes for incredible wheel stability exalith ensures braking distances are 18 shorter than average in wet and dry conditions while also maintaining a black look that will last thousands of kilometres features ism 4d rim keeps the weight low and improves aerodynami