Malossi HTQ secondary gears Z 15/41 toothed fitting D 17

The Malossi HTQ secondary gears are a high-quality product designed to improve the transmission performance of Piaggio engines. These gears are made of special straight-tooth steel, which ensures greater strength and durability over time. Thanks to their toothed fitting with a diameter of Ø 17, they completely eliminate any axial thrust, thus reducing stress on the bearings.

The precision with which these gears are made is extremely high: they are carburized, hardened, and ground to ensure superior noise and durability characteristics.

It is important to note that Piaggio made changes to the fitting of secondary transmission gears starting in 1998, with diameters of Ø 18 and Ø 17.67 respectively. However, there is no precise information on the start dates of the series assembly of the new gears in the various types of scooters, nor on the numbers of engines to refer to. Therefore, visual verification of the gears after disassembly is currently the only option.

To facilitate those who need to replace the ratios on these scooters, a table has been compiled indicating the first and second series of gears, when available.

The Malossi HTQ secondary gears are the ideal choice for those who want to improve the performance and durability of their Piaggio scooter transmission.