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The junction between the top tube and seat tube is curved for additional compliance. Blue Hogback Gravel Bike, 2019 Dirty Kanza Expo. © Z. Schuster / Cyclocross Magazine

The junction between the top tube and seat tube is curved for additional compliance. Blue Hogback Gravel Bike, 2019 Dirty Kanza Expo. © Z. Schuster / Cyclocross Magazine