Description
This Polini Primary Transmission 27/69 Vespa 125cc PK / Primavera to change the gear ratio of your transmission.
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 a complete transmission with 27 / 69 gear ratio.
- reinforced primary transmission
- gear ratio 27 / 69
- straight teeth
Scooter gearbox
The transmission of scooters and some mopeds is located in a case behind the clutch and torque driver and has the function of reducing rpm and ultimately driving the wheel axle.
The transmission of a scooter has a direct influence on top speed. If the engine develops enough power and torque at low rpm, you can choose a longer gear ratio to achieve a higher top speed without any noticeable loss in acceleration.
Please note: if you don't have a press, better choose pre-assembled gears!
| Primary Gears Polini Z=27-69 Vespa 125cc Primavera / PK | |
|---|---|
| Article no. | P202.1222 |
| EAN | 8054705116049 |
| Weight | 0,86 kg |
| Brand | Polini |
| Product type | Transmission |
| Type | Primary |