Mountain biking by nature is hard on its tools. The freehub body is no exception. After a few good hard years it's not uncommon to see them wear out. Thankfully we've got replacement freehub bodies right here. They're all the Hyperglide interface not XD so they will fit Shimano 9 - 11-speed cassettes and SRAM 9 - 10-speed cassettes. You just need to determine which freehub style your Mavic hubs are be it TS-2 FTS-X or ITS-4.