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The early Sphinx models were built for 700x38c and 700x40c tires, but there is room for even wider tires if vintage riders want a more monsterous ride. Gary Fisher Sphinx. © Steve O'Bryan

The early Sphinx models were built for 700x38c and 700x40c tires, but there is room for even wider tires if vintage riders want a more monsterous ride. Gary Fisher Sphinx. © Steve O’Bryanundefined