Oversize diameter handlebars without crossbars were invented and patented by Pro Taper. This unique design allows the bar to flex and absorb impacts better than standard 7/8" bars. The intentional bar flex leads to increased rider comfort and less fatigue, while the oversize diameter at the bar clamp area maintains bar integrity. The Contour handlebar utilizes a computer profiled 5mm wall design, making it 20% lighter and 40% stronger than most bars.