Based on cutting-edge aero research and feedback from leading fitters, Zipp completely redesigned the VukaBull carbon base bar. With a slightly concave nose section and forward-swept arms, the new airfoil shape reduces drag, stiffens the bar, and complies with all UCI regulations. Meanwhile, a host of ergonomic features have been added. Most notably, the VukaBull is now available with a choice of Zero or 40mm drop. The clamp area now provides an extra 10mm of lateral adjustment for clip-on aero bars, and the grips have been angled up slightly for a more natural wrist angle when climbing and sprinting.