The mavic crossmax sl pro ltd 650b wheelset has been designed using exclusive technologies and brand new tyres for improved performance all round they have been designed for cross country racers who desire a fast and lightweight set of wheels that roll quick in all situations the rims have been strategically machined using mavic39s patented ism 4d technology to reduce weight and interia this process removes material without compromising the durability and stiffness these mavic mtb wheels