The hubs have an alloy/carbon shell which reduces the weight significantly, compared to any other light set of hubs (front hub 46gr / rear hub 156gr). The wheels we have seen had 20/24 spokes. We are keen to receive any facts&figures from testings, especially in regards to stiffness. The official rider weight limit is 80kg for this set, which is plenty. But for a small weight penalty, the weight limit can even be lifted to 95kg. A set of Skyliners will retail in Australian stores for around $3000.