Clutch spring Kymco AK550 ie 4-stroke euro 4 Malossi

Inverter spring in purple colour for Kymco AK550.

The hardness of the variator pulley spring determines whether the mechanism opens the clutch to engage the clutch bell at more or less engine revolutions.
A harder spring will make the clutch "engage" at more revolutions and consequently the bike will start faster from a standstill and you will notice a better acceleration, i.e. a soft spring is as if you start in "second gear", with a hard spring is as if you start in "first gear",

Attention! in your choice because if it is too hard, you need more power and more RPM to start from a standstill.

Malossi springs are made of steel with high carbon silicon alloy, heat treated to better resist high temperatures, and does not lose power at high temperatures or with use.