The foundation of the frame is made up from fibres. At SIMPLON unidirectional high modulus carbon fibres from Foray, the Japanese technology leader, are used. These show 65-85% more tensile strength than normal carbon fibres. For the top road bike models ultra high modulus carbon fibres are used (90% higher tensile strength). The resulting higher frame stiffness gives extra security, especially at high speeds. >> Lightweight, greater forward propulsion, great stability, directional stability.