Higher or lower gear ratio might be the deciding factor in how your scooter will perform. A higher ratio (shorter transmission) will make the engine reach maximum horsepower more quickly, meaning acceleration will be improved, sacrificing a bit of top speed. A lower gear ratio (longer transmission) has the opposite effect - higher top speed and slower acceleration.
This is the Polini Primary Transmission 14/39 Piaggio Diesis / Zip SP LC after 2000. Best combined with a 50cc or 70cc sport cylinder, for increasing top speed while preserving excellent acceleration.
- gear ratio: 14/39
- primary transmission
- Additional Information
Name Polini Primary transmission 14/39 Piaggio Diesis / Zip LC after 2000 Item No. P202.1407 Brand Polini Type Primary Assembly Press-fitting Gear Ratio 14/39 (2,79)
- Fits to (4)
Your product goes with the following manufacturers and their models:
Diesis 50cc AC, Zip 2 50cc AC CAT (after 1999), Zip 2 SP 50cc LC, Zip Base 50cc AC (after 1999)