## Polini 15% Uprated Clutch Spring Blue Benelli / Italjet / Malaguti / MBK / Yamaha 125 4T Boost your scooter's performance with the Polini 15% uprated rear clutch spring. This high-quality, blue tuning part, dedicated to Benelli, Italjet, Malaguti, MBK and Yamaha 125 4T scooters, provides improved power transmission and more dynamic acceleration. ### Optimized Power Transmission The Polini clutch spring, with its 15% increased hardness, more effectively clamps the drive belt, minimizing the risk of slippage and ensuring optimal power transfer to the rear wheel. The result is a noticeably better throttle response and more dynamic acceleration, especially noticeable during starts and overtaking. ### Precision Manufacturing and Reliability The Polini brand is synonymous with quality and innovation in the world of motorcycle tuning. The clutch spring is made of high-quality materials, guaranteeing its durability and long service life, even with intensive use. The blue color gives it a sporty character and distinguishes it from standard components. ### Technical Parameters: * Hardness: +15% * Color: blue * Number of coils: 5 * Wire thickness: 4.1 mm * Height: 115 mm * Inner diameter: 53 mm ### Recommendations The Polini 15% clutch spring is the ideal solution for anyone who wants to improve the performance of their 125 4T scooter. Recommended for use in conjunction with other modifications, as well as a standalone upgrade, providing a noticeable improvement in riding dynamics.