POLINI KYMCO 300/KAWASAKI Contrast Spring

The POLINI contrast spring is a fundamental component for optimizing the functioning of the variator group, especially in the presence of modifications that significantly increase the engine's power. This spring is designed to tackle the challenges related to the installation of transformation kits, where the transmission belt may slip or the rear movable half-pulley may not be able to adequately counteract the movement of the pulley mounted on the crankshaft.

The POLINI contrast springs offer an increase in load compared to the stock springs: 10% for the blue spring (MaxiScooters), 7% for the white spring (Scooters 50), and 15% for the blue spring (Scooters 50). It is important to note that using a spring with a higher load must be carefully evaluated, as the best performance is achieved by using the spring that allows for optimal power transmission with the least possible load. Springs with higher loads can trap the belt between the pulleys, increasing wear and reducing transmission efficiency.

Moreover, the contrast spring is equipped with the EVO SLIDER, an innovative system that, thanks to a special wear-resistant and self-lubricating material, allows the spring to slide consistently during the variator's shifting excursion. This further improves the responsiveness and durability of the transmission system.

For correct installation, it is essential to follow the specific instructions, paying attention to the replacement of the original spring and always checking the wear condition of the belt. The POLINI contrast spring thus represents a strategic choice for those who wish to maximize the performance of their scooter or maxi scooter.

• Increased load compared to stock springs:
• 10% for the blue spring (MaxiScooters)
• 7% for the white spring (Scooters 50)
• 15% for the blue spring (Scooters 50)
• Designed for transformation kit installations
• Reduces the risk of transmission belt slipping
• Compatible with increased power variators
• Equipped with EVO SLIDER for consistent excursion
• Special wear-resistant and self-lubricating material
• Improves responsiveness and durability of the transmission system
• Attention required for replacing the original spring
• Checking the wear condition of the belt is recommended