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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.Challenge Gravine XP Pro TLR tire designed to improve performance and traction on muddy sections and rougher, rockier terrain, the Gravine is designed to deliver. Featuring a more aggressive tread pattern, this tire pushes the boundaries of gravel even further, enabling totally new adventures. With the growing demand for tougher Gravel tires, Challenge has developed new technology applied to handmade construction, adding Xtra Protection (XP) for tougher rides over rougher terrain. Gravine XP is designed to take you where others can’t reach. Starting with CORAZZA ARMOR SILVER for better sidewall protection, Gravine XP also includes CORAZZA ARMOR GOLD, a special layer of tightly woven material placed on the tire, further reinforcing it for more aggressive conditions.
