Easton ec90 xc front mtb wheelthe ec90 xc wheels was designed from the ground up for competitive trail riding and cross country racing the carbon rims are designed and constructed for an airtight ust seal right out of the box no fussing with rim strips or sealant and because the internal rim width is a generous 19 millimeters these wheels easily accommodate tires as wide as 235 the rims are laced with 24 sapim double butted spokes to a flashy set of anodised m1 hubs and sealed cartridge b