## Polini 20% Uprated Blue Torque Spring for Aprilia / Derbi / Gilera / Italjet / Piaggio 125-150 This uprated center clutch spring from the renowned brand Polini is the perfect solution for owners of Aprilia, Derbi, Gilera, Italjet, and Piaggio scooters with a capacity of 125-150 cm3 who expect better performance. By increasing torque by 20%, the spring provides more dynamic acceleration and better throttle response. ### Increased Performance and Precision The Polini blue center spring is characterized by precise workmanship and high-quality materials, which guarantees long life and reliability. The increased spring hardness (+20%) ensures better power transmission, minimizing belt slippage. Thanks to this, the scooter gains in dynamics and achieves better acceleration, especially in the mid and high rev range. ### Fit and Compatibility The spring has been designed specifically for Aprilia, Derbi, Gilera, Italjet, and Piaggio scooters with a capacity of 125-150 cm3, guaranteeing a perfect fit and trouble-free installation. Its blue color adds a sporty character. ### Technical Specifications: * Spring Hardness: +20% * Color: Blue * Number of coils: 5.5 * Wire thickness: 4.5mm * Height: 116mm * Inner diameter: 55.5mm By choosing the Polini center spring, you are investing in quality, performance, and reliability. See the difference for yourself!