Description
Polini Air Speed 12.5° pulley for Piaggio Zip / Typhoon
High-quality pulley from Polini. Suitable for all models with 50cc Piaggio 2-stroke and 4-stroke engines after 1998, such as the Zip, Typhoon, NRG, Gilera Runner, Stalker, Storm, Vespa LX50, and Aprilia SR50 from 2004 onward...
Note: The pulley has no teeth for the electric starter. The engine can only be started using the kickstarter.
Details Polini pulley for Piaggio
- Outer diameter: 95 mm
- Pulley face angle: 12.5°
- Fan wheel included
- Material: steel
CVT Pulleys
Pulleys are an integral part of the CVT system on scooters and mopeds with automatic CVT transmission.
The continuously variable transmission consists of fixed and moving pulleys, the V-belt rises and falls between them depending on the engine speed, changing the speed of the vehicle.
When should you change a pulley?
There are two reasons for replacing pulleys:
- Wear and tear. Although pulleys are relatively durable, the constant sliding of the V-belt can deform the surface.
- Tuning. Different pulley angles and diameters can improve the handling of scooters or mopeds.
Note: A CVT variator can only do a good job when CVT pulleys as well as torque drive pulleys are compatible with each other. Pitches and diameters of the individual elements must be matched so that the V-belt can glide evenly.