POLINI Evo-Slider Contrast Spring GILERA GP 800

The POLINI Evo-Slider contrast spring is a fundamental component for optimizing the operation of the variator group, especially in the presence of transformation kits that significantly increase the power and torque of the engine. This spring is designed to tackle the challenges related to belt slippage and to ensure that the rear movable sheave can effectively counteract the movement of the pulley mounted on the crankshaft.

The POLINI contrast springs offer an increased load compared to the stock springs: 10% for blue springs (MaxiScooters), 7% for white springs (Scooters 50), and 15% for blue springs (Scooters 50). It is important to use a spring with a higher load only when strictly necessary, as the best performance is achieved with springs that allow optimal power transmission at lower tensions. The Evo Slider, made from a special wear-resistant and self-lubricating material, allows the spring to move smoothly and consistently, reducing wear and improving transmission efficiency.

For installation, it is necessary to remove the transmission cover and replace the original spring with the POLINI one, following the specific instructions. It is recommended to always check the condition of the transmission belt and the proper functioning of the variator group before proceeding with the spring replacement.

• Load increase: 10% for blue springs (MaxiScooters)
• Load increase: 7% for white springs (Scooters 50)
• Load increase: 15% for blue springs (Scooters 50)
• Special wear-resistant and self-lubricating material
• Smooth and consistent movement
• Reduction of wear
• Improvement of transmission efficiency
• Easy installation with replacement of the original spring
• Recommended check of the transmission belt condition