2011 Giro Pro Bike: Igor Anton’s Orbea Orca GDi2 By VeloNews.comPublished May. 25, 2011 comments Tweet Share << Back to StoryOpen full size in new window.The Orca's seatpost clamp is slick. Photo: Caley Fretz The Orca’s seatpost clamp is slick. Photo: Caley Fretz