4th gear cog -OEM QUALITY- Vespa PX200 (1984-), Cosa200 – 35 teeth – long 4th gear for PX125-150 (1984-), T5 125cc, Cosa125-150, LML Star/Stella125/150 2-stroke – 35 teeth di tendenza adesso!

Gear wheel of the fourth gear of the Vespa PX Lusso 200 models.

Original gear ratios of the Vespa PX Lusso 200 gearbox:

• 1st gear : 57 teeth
• 2nd gear : 42 teeth
• 3rd gear : 38 teeth
• 4th gear : 35 teeth

Original gear ratios of the Vespa PX Lusso 125/150 gearbox:

• 1st gear : 58 teeth
• 2nd gear : 42 teeth
• 3rd gear : 38 teeth
• 4th gear : 36 teeth

This gear can be used with the countershaft of all 125-200cc Rally, PX and Cosa models.
The 35 tooth gear is one tooth longer than the 125/150cc models. Thus, when used in the 125/150cc engines, the reduction ratio in fourth gear is slightly extended.

TIP:As a rule, a stable gear always consists of as few teeth as possible. The fourth gear of the PX200 with 35 teeth has a wider tooth base than that of the PX125 with 36 teeth.
It is therefore more stable and is very suitable for high performance/torque engines. In order to get a sporty close graduation of the gearbox, just from the jump 3 gear to 4 gear, one uses a secondary shaft with less teeth (e.g. 12-13-17-20 instead of 12-13-17-21 as in series). This reduces the gear jump and the engine is fully in the power band again when changing gears.

GR Gears has been manufacturing engine components (gearboxes, clutches) as well as axle and bearing components for Piaggio/LML since 1981. In many Piaggio engines you can find components made by GR Gears. The quality is absolutely convincing. Since they have also proven themselves in everyday use in our own high-performance engines, they are now an integral part of our OEM delivery program.

Conclusion: Inexpensive gear wheel in original quality for the rebuild!

AI-translation