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Nys ran a Dura-Ace R9100 crankset with 50/34t chain rings. Sven Nys' 2018 Dirty Kanza 200 Trek Checkpoint. © Z. Schuster / Cyclocross Magazine

Nys ran a Dura-Ace R9100 crankset with 50/34t chain rings. Sven Nys’ 2018 Dirty Kanza 200 Trek Checkpoint. © Z. Schuster / Cyclocross Magazine