POLINI contrast spring 1 stop Vespa 125 Primavera 4T 3V

The POLINI contrast spring with 1 stop is an essential component for the proper functioning of the variator assembly, particularly in situations of high power increase. This spring is designed to fit various transformation kits, improving the response of the rear movable pulley and preventing belt slippage.

With a higher load compared to the stock spring, it offers a 10% increase for blue springs (MaxiScooters), 7% for white springs (Scooters 50), and 15% for blue springs (Scooters 50). It is important to note that the use of a spring with an increased load should be reserved for cases where it is truly necessary, as excessive tension can compromise transmission efficiency and increase belt wear.

The innovative EVO SLIDER system, made from special wear-resistant and self-lubricating material, allows the spring to operate with constant torsion during the variator's travel, further enhancing performance.

For installation, it is essential to follow the specific instructions, paying attention to the correct position of the spring's convex side. Always check the condition of the transmission belt before proceeding with the replacement to ensure optimal system operation.

• Compatibility with various transformation kits
• Increased load compared to the stock spring
• 10% increase for blue springs (MaxiScooters)
• 7% increase for white springs (Scooters 50)
• 15% increase for blue springs (Scooters 50)
• EVO SLIDER system made of wear-resistant and self-lubricating material
• Constant torsion during the variator's travel
• Importance of following installation instructions
• Checking the condition of the transmission belt before replacement