This new transmission system takes full advantage of the Malossi components already on sale last year, by adding several new parts that make the entire system particularly suited to the enormous power available. This latest system hinges on the new Fixed Pulley of the torque driver that has a larger diameter and the very latest specifications. The larger diameter of this pulley allows one to have a greater velocity-ratio range compared to the original pulley that has a notably smaller external diameter. Malossi engineers have also taken particular care in realising this pulley right down to the smallest detail, using special materials and a particular type of thermochemical treatment that ensures exceptional surface hardness and therefore excellent wear and abrasion resistance. This new fixed pulley has been designed to offer perfect running if coupled to the Malossi Torque Driver that is already available and has the same diameter as the fixed pulley itself. In order to fully exploit the range of the new torque driver unit and the power ratings currently offered by competition machines, a new notched K Belt has been introduced with larger section and revised length to ensure maximum performance under all running conditions. To complete the renewal of the transmission system and take full advantage of its exceptional specifications, the Multivar variable-speed drive has also been upgraded by fitting it with new tracks for the rollers and a new hub. This new variable-speed drive represents the evolution of the previous generations, the result of many years experience on the race circuit and the currently available CAD-CAM technology that allows top-level specifications to be obtained. Compatible with: - Aprilia: Scarabeo 50 Piaggio_S, SR 50 04-Piag._S - Derbi: GP1 50 LC_S, GPR 50 06-_S, GPR 50_S - Gilera: DNA 50 LC_S, Runner SP 50 -05_S, Runner SP 50 06-_S, Stalker 50 AC_S, Thyphoon 50 AC_S - Piaggio: Beverly 50 06-_S, Liberty 50_S, NRG 50_S