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The Donnelly PDX is a well-traveled mud tread. Gage Hecht's 2019 Donnelly C//C Cyclocross Bike. © Z. Schuster / Cyclocross Magazine

The Donnelly PDX is a well-traveled mud tread. Gage Hecht’s 2019 Donnelly C//C Cyclocross Bike. © Z. Schuster / Cyclocross Magazine