For the single-gear (DD) different types of frames have been developed based on the standard RY30 and RY32 frames, trying to maximize all the performances based on to various characteristics and types of tires and engines. The substantial difference between the various version is in the material, therefore not visible to the naked eye but recognizable to an acronym printed inside the tank fixing plate. Starting from the S18 models, also for this racing season we have conducted an important development activity aimed at optimizing the overall performance of the kart. The intervention has involved the evolution of the frame geometry, using new materials with improved mechanical characteristics and revising of some accessory components. New technical details have also been introduced, projected to increase the products dynamic efficiently and construction quality of the products.