The Deda Superzero RS Carbon Bars blend traditional handlebar shaping with modern carbon construction. The Superzero RS Carbon is available in four widths from 40cm to 46cm, all measured from outside to outside. Deda’s Fast Pro Extensions are also compatible with the Superzero RS Carbon, although, as with many aero handlebars, adjustment and mounting space is limited. At £299, the Superzero RS Carbon sits firmly in the premium category, although it doesn’t stand alone. If you favour a traditional round bar shape with no flare, the Deda Superzero RS Carbon successfully preserves that character while adding the benefits of carbon construction, comfort and modern internal cable routing.