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Gregg ran Dura-Ace components, including the ST-R9120 shift/brake levers. Amity Gregg's 2018 Gravel Worlds Pinarello GAN GR Disk Gravel Bike. © Z. Schuster / Cyclocross Magazine

Gregg ran Dura-Ace components, including the ST-R9120 shift/brake levers. Amity Gregg’s 2018 Gravel Worlds Pinarello GAN GR Disk Gravel Bike. © Z. Schuster / Cyclocross Magazine