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The Teravail Cannonball gravel tire has a fast-rolling center and side knobs for corners. Amity Gregg's 2018 Gravel Worlds Pinarello GAN GR Disk Gravel Bike. © Z. Schuster / Cyclocross Magazine

The Teravail Cannonball gravel tire has a fast-rolling center and side knobs for corners. Amity Gregg’s 2018 Gravel Worlds Pinarello GAN GR Disk Gravel Bike. © Z. Schuster / Cyclocross Magazine