Vittoria Cross XN Pro Cyclocross Tire. When the cyclocross conditions are firm, dry, and fast then the Vittoria Cross XN Pro is your tire of choice. The Cross XN's diamond tread pattern is optimized for pure speed while a line of knobs along the outer edges deliver just enough bite to get you around corners. The tire features a super supple 150 TPI casing, a folding bead to keep weight to a minimum, and its 700x31 size is legal for use in UCI sanctioned events if that's your cup of tea.
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