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Nauman went a bit narrower in the back with a 700c x 37mm Vittoria Terreno Zero paired with the new EA90 AX wheels. Amanda Nauman's 2019 DK200 Niner RLT 9 RDO Gravel Bike. © Z. Schuster / Cyclocross Magazine

Nauman went a bit narrower in the back with a 700c x 37mm Vittoria Terreno Zero paired with the new EA90 AX wheels. Amanda Nauman’s 2019 DK200 Niner RLT 9 RDO Gravel Bike. © Z. Schuster / Cyclocross Magazine