Easton have upgraded their venerable ea90 sl wheels these wheels have always been considered the more robust option now even more so bigger more abusive riders will really appreciate the new and improved ea90 sl it features the wider 175mm internal rim width fully certified road tubeless compatibility and now the added durability of the all new echo rear hub durability is also enhanced by a handful of extra spokes 20 front and 24 rear vs 16 front and 20 rear on the ea90 slx this