High-smoothness cover with diamond-shaped texture for gravel bikes, with external protrusions that intervene when the road becomes soft, muddy or needs more grip.

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The CHALLENGE Gravel Grinder tire is designed for those who love Gravel. The important side knobs and the embossed tread ensure perfect road holding.

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The lightweight and flexible 120 TPI nylon carcass is useful in racing. PPS puncture protection – a durable aramid layer between tread and carcass – increases driving safety.