We have an image challenge," admits Schwinn Marketing Director Gregg Bagni. That's clear from a walk around the University of Colorado campus a half-mile away outside dorms and classrooms, racks are filled with bikes made by Trek Bicycle, specialized Bicycle Components, Cannondale and Giant. Waterloo, Wisconsin-based Trek, is the leader This year it expects about $300 million in revenue on sales of more than 900,000 bikes.