Speed Concept is pure drag-defying tri performance. It offers total aerodynamic integration, incredible fit, and even Project One customisation – all in one incredible system. You own the course on Trek Speed Concept. Design, components and incredible fit combine to meet your best effort and propel you to new heights of performance. With accessories like a bike specific bottle cage, and the Draft Box II, you can add storage for your food, while making your bike even more aerodynamic.