Nowadays, vehicles are getting lighter and lighter to lower as much as possible the fuel consumption and meet the emissions demands. Furthermore, the reduction in mass has surely benefits on the performances and, especially among the supercar market, this is an important factor to be considered. In a competitive field, such as the automotive one, every component of the vehicle may have the potential to be lightened. The objective of this master’s thesis work is to investigate the seat rails of a supercar and try to diminish their weight, while maintaining the safety structural target and the energy absorption capacity. Starting from the original design, four load cases have been performed to validate the virtual model.