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The Grade's seat tube has a retanglar section where it meets the bottom bracket, which creates just a bit of a mud shelf. 2016 Sea Otter Classic. © Clifford Lee / Cyclocross Magazine

The Grade’s seat tube has a retanglar section where it meets the bottom bracket, which creates just a bit of a mud shelf. 2016 Sea Otter Classic. © Clifford Lee / Cyclocross Magazineundefined