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Nieuwenhuis ran a Dura-Ace drivetrain with pro-only 46/39t chain rings on a M9100 crankset. His derailleur was an M9150 Di2 model. Joris Nieuwenhuis' Cervélo Áspero Cyclocross Bike. © L. Haumesser / Cyclocross Magazine

Nieuwenhuis ran a Dura-Ace drivetrain with pro-only 46/39t chain rings on a M9100 crankset. His derailleur was an M9150 Di2 model. Joris Nieuwenhuis’ Cervélo Áspero Cyclocross Bike. © L. Haumesser / Cyclocross Magazine