The Cervelo Men's S5 Ultegra DI2 Road Bike is an aerodynamic road bike built for the fastest sprinters in the world. It is stiffer and more aerodynamic than ever before, while offering excellent comfort and ride quality. Full internal cable routing, a custom bar and stem, riding position, and special frame shapes work together to reduce drag and improve aerodynamics. The frame stiffness and geometry work together for precise handling and pedaling efficiency. Frame lay-ups and tube shapes, along with tires up to 28mm wide, soak up road vibrations for a smoother ride.