Clutch spring set -MALOSSI- Piaggio 50cc (type Sfera 1)

With different spring strengths you can determine the speed range at which the frictional connection of the clutch should take place. If you install harder springs, the clutch engages at higher speeds. A cleanly tuned clutch gives you the important milliseconds at the start and decides on the 1/8 mile about good & bad!
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