Giro 2009 Tech: The SuperSix's huge head tube has a 1.5-inch lower bearing.  |  Photo: Don Karle
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Giro 2009 Tech: The SuperSix's huge head tube has a 1.5-inch lower bearing.
Giro 2009 Tech: The SuperSix's huge head tube has a 1.5-inch lower bearing.  |  Photo: Don Karle
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