Aprilia Leonardo 125/150cc yellow clutch spring Malossi

The hardness of the clutch spring determines whether the mechanism opens the clutch to engage with the bell at higher or lower engine revolutions.
A stiffer spring will make the clutch "engage" at higher revolutions and, as a result, the motorcycle will take off faster from a standstill and you will notice better acceleration. In other words, a soft spring is like starting in "second gear", while a stiff spring is like starting in "first gear". Be careful!! with your choice, as if it is too stiff, you will need more power and more RPM to start from a standstill.
The Malossi springs are made of steel with a high-carbon silicon alloy, heat-treated to better withstand high temperatures, and do not lose their properties at high temperatures or with use.

Spring hardness:
White: Reinforced
Yellow: Racing
Red: Racing
Note: This contrast spring is suitable for both the original variator and the Malossi Multivar variator!