Mavic have upgraded the joint technology of the rim from a pin joint to a sleeved one a sleeve makes a solid connection between the two rim ends instead of the two pins the result is an impressive 40g weight saving per rim close to 10 less rim weight although more expensive this process is key to improving the dynamics of the aksium making it easier to spin to steer and to climb with signature spokes and hubsof course as part of our mavic signature it uses straight pull bladed spokes