Fa Italia Item number: 7670136
Fa Italia
79,00 €*
available immediately
Shipping weight 0,21 kg
Together with the large primary wheel, the clutch pinion forms the so-called primary reduction. Here, the transmission ratio can be changed by simply replacing the clutch pinion.
Those who cannot manage this can also replace the primary wheel.

For the latter option, however, the engine must be opened completely, for the clutch pinion, however, it is sufficient to remove the clutch cover together with the clutch.

There are three primary wheels that were originally installed.

  • 65 teeth: PX200, Rally200

  • 67 teeth: Sprint Veloce, Super, GT, GTR, TS

  • 68 teeth: PX80, PX125, PX150, all Cosa models.

The fewer teeth the primary gear has, the longer the possible reduction.
The fewer teeth the clutch pinion has, the shorter the possible reduction.

The following combination can be used:

  • 65Z = 23Z

  • 67/68Z = 20Z, 21Z, 22Z

There are now (from z.The PX80 and PX125 models originally have a primary gear with 68 teeth and a coupling pinion with only 20 teeth. Here, the 22 tooth sprocket can be installed without any further adjustments and the transmission ratio can therefore be extended considerably (+ ~10km/h). Ideal for PX80 which are converted to 125/135cc or PX125 which are converted to 166/177cc. If this is still too short, the BGM special pinion with 23Z can be used for the 67/68Z primary gear.



As lubricant we recommend the BGM Pro Street gear oil (BGM2025, corresponds to specification API GL-3).


AI-translation

Rate this article now and let us know what you think.
Gearbox shift scooter
Number of teeth small primary gear
22
Type of gearing
schräg
Combinable primary wheels
67 Zähne schrägverzahnt (Piaggio), 68 Zähne schrägverzahnt (Piaggio), 65 Zähne schrägverzahnt (DRT Ritzel)
 
Matching
Accessories
Matching
Customers also bought