Vittoria Sturdy TNT 29 Mountain Tire. True to its name, the Vittoria Sturdy TNT 29 mountain tire is robustly built for impressive durability. It sports large, well spaced, square knobs that make it a rock solid choice for aggressive cross country or light free riding endeavors. The Sturdy TNT is also tubeless ready with a bead and sidewall designed for air retention and reliability.
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