POLINI blue Quartz Evolution contrast spring

The POLINI blue Evolution contrast spring is an essential component for optimizing the performance of the variator group, especially in cases of modifications that significantly increase engine power. This spring, designed for the rear movable pulley, offers a higher load compared to the stock spring: 10% for MaxiScooters, 7% for 50cc Scooters with a white spring, and 15% for 50cc Scooters with a blue spring.

The installation of this spring is particularly advantageous when using a high-performance transformation kit, as it helps to prevent belt slippage and ensures proper resistance to the movement of the pulley mounted on the crankshaft. It is important to note that the use of springs with increased load must be carefully evaluated, as excessive tension can compromise transmission efficiency and increase belt wear.

Additionally, the spring features the innovative EVO SLIDER system, made from special wear-resistant and self-lubricating material, which allows for smooth and consistent movement during the variator's excursion. This design further improves the response of the transmission system, ensuring optimal performance.

For proper installation, it is essential to follow specific instructions, paying attention to the position of the spring and checking the condition of the belt before proceeding with the replacement.

• Increased load: 10% for MaxiScooters
• Increased load: 7% for 50cc Scooters with a white spring
• Increased load: 15% for 50cc Scooters with a blue spring
• Designed for the rear movable pulley
• Prevents belt slippage
• Ensures proper resistance to pulley movement
• EVO SLIDER system for smooth movement
• Special wear-resistant and self-lubricating material
• Improves the response of the transmission system
• Requires attention during installation and checking the condition of the belt