Morini 50cc AC/LC MALOSSI Primary Gears 14-43 1:2.43

Morini 50cc AC/LC MALOSSI Primary Gears 14-43 1:2.43

Extending the gear ratio is useful if the engine performance has been increased by successful tuning measures. With the extended gear ratio you can convert your extra power into more speed.
In addition, the cylinder and the rest of the engine are spared, because they don't have to be revved up as much.
In series engines a longer gear ratio is usually not useful, because in most cases the power is not sufficient to convert the extra gear ratio into top speed.

The sport transmissions from MALOSSI and POLINI are mainly straight geared, making the interlock area smaller and so reducing friction. Lower friction in your transmission means less heat and you're finally getting that badly needed power to your rear wheels.

In case you drive a PIAGGIO/GILERA motor, please take note of the following information about your gears:

1. Up till 1996, PIAGGIO used toothed bears with 18mm.

2. From 1996 to 1998. PIAGGIO reduced the diameter of the intermediate shaft from 18mm to 17.7mm. To make sure you get the right part, please measure shaft diameter before ordering.

3. Since 1998/99 PIAGGIO has been using a new larger cog wheel on the main shaft. A new pinion with a smooth inner surface has replaced the previous used pinion which had a toothed inner surface.