POLINI Evolution Yamaha Contrast Spring
for BENELLI, APRILIA, ATALA, BETAMOTOR, CAGIVA, CPI, ITALJET
Check the compatibility with your motorcycle
FIND YOUR BIKE - compatibility table
The POLINI Evolution contrast spring is an essential component for optimizing the performance of the variator group, especially following modifications that significantly increase engine power. This spring is designed to tackle the challenges posed by high-performance transformation kits, ensuring adequate support for the rear movable half-pulley.
With an increased load compared to the stock spring, the blue version offers a 10% increase for MaxiScooters, while for 50cc Scooters, the load is increased by 7% for the white spring and by 15% for the blue spring. It is crucial to use a spring with an increased load only when necessary, as the best performance is achieved with a spring that allows for optimal power transmission. Springs with excessive loads can trap the belt between the pulleys, causing premature wear and reducing the efficiency of the transmission system.
The contrast spring features the innovative EVO SLIDER, made from a special wear-resistant and self-lubricating material, which allows for smooth and consistent movement during the variator's shifting travel. This design enhances the system's response, ensuring more efficient and durable operation.
For installation, it is necessary to remove the transmission cover and follow specific instructions to ensure correct and safe mounting. Make sure to check the condition of the transmission belt and the operation of the variator group before proceeding with the spring replacement.
- 10% load increase for MaxiScooters with blue spring
- 7% load increase for 50cc Scooters with white spring
- 15% load increase for 50cc Scooters with blue spring
- Innovative EVO SLIDER design in wear-resistant and self-lubricating material
- Smooth and consistent movement during the shifting travel
- Optimization of the variator group's performance
- Adequate support for the rear movable half-pulley
- Installation requires removal of the transmission cover
- Check the condition of the transmission belt and the variator group before replacement
| Made in | Italy |
|---|---|
| Color | Blue |
