The attention of the MALOSSI technicians, who have always been attentive to the reports and requests of the pilots, has been focused on the MINARELLI-YAMAHA engines that are very deficient in the variator system. The high number of revolutions to which the pulley- conduct group is subjected generates very strong vibrations and oscillations of the primary shaft. To overcome this problem, the primary gear shaft has been stretched so that it can be housed on a bearing placed on the original engine carter cover. This prevents the shaft itself from spreading, preventing the entire system from working properly CVT. Two simple operations (see assembly instructions) are sufficient to apply the bearing support to the original carter cover. Technical characteristics - Gears H.t.q. z 14/42 designed and manufactured with straight teeth to minimize friction losses and stresses on the supports. - Optimization of the relationship. - Elongated primary gear shaft. - Bearing support in bonded steel with surface browning treatment. Sealed bearing. Note: Mount only with original carter cover AEROX-NITRO version