Lightweight, Endurance and with great response sensation: The attractive Sphene frame combines great resistance coefficients and lightness with maximum quality standards that BH demands of all of its models. The BH is manufactured from 6061 aluminium in conjunction with hydroforming technology. This technique allows us to create customised tubes with increased stiffness in critical areas and more lightness to those that do not required it. The design of the Sphene frame provides additional rigidity in the bottom bracket while maintaining a high level of comfort and desired flex where needed. All of this results in a frame with a great capacity for vertical absorption and increased lateral stiffness.