30mm Enduro carbon rim Convergence Rim Technology increases vertical compliance allowing the wheel to absorb bumps, vibrations and impacts from the terrain, enhancing stability and control in challenging riding conditions Sinuous profile spoke face aligns the nipple seat to the spoke angle Hydra 2 hubs have a 65% thicker axle, larger 6903 bearings with labyrinth seals, enlarged pawl pockets, a refined drive ring, an extra tooth on each pawl, and 0.41° engagement Sapim Race spokes Ideal for tires between 2.4" and 2.6"