Mavic xa pro carbon mtb wheelsetthe mavic xa pro carbon and its 26mm wide full carbon rim offers top notch lateral stiffness lightness and responsiveness while still granting lots of comfort and control for effortless explorations and more fun on the trails featuresrims material100 unidirectional carbon fibre drillingtraditional valve hole diameter6 5mm tyreust tubeless and tubetype etrto size 27 5584x26ss etrto size 29 622x26ss hookless profile recommended tyre sizes1 4 to