Hyperon Ultra wheels are made using an exclusive Campagnolo technique; the handmade Ultra-Light Carbon (H.U.L.C) process, which ensures profile optimization, balancing the amount of carbon fiber and proprietary resin for greater stiffness and control. The optimal rim profile has been identified as 37mm by Campagnolo engineers, to provide wheels that improve agility. They can handle quick, responsive shifts for fast climbs and quick maneuvers. The 21mm internal rim width offers extreme stiffness and further weight savings. By using the highest quality CULT bearings, Campagnolo is able to provide maximum efficiency and durability for unparalleled smoothness. Representing Ultimate Level Ceramic Technology, CULT bearings offer a significant upgrade over all other bearings. The key to the CULT's extraordinary performance is the use of the highest quality materials in its hybrid construction. Incredibly hard, perfectly round ceramic bearings maintain consistent performance over time and run on synthetic oil on specially treated stainless steel races to make them resistant to wear. Hyperon Ultra hubs feature the Head-2-Bay total tension management system, created to prevent inelastic spoke cutting and to ensure optimal power transfer to the road. Made from the finest materials and employing high-quality engineering, HyperonUltra wheels are finished with Campagnolo's high-quality C-Lux coating to ensure a glossy surface to complement the aesthetic.