Clutch Spring PIAGGIO Standard
for Vespa PK50 XL FL/HP/XL2
stiffness: standard, 6 pcs
In order to transmit more performance, an increased friction is necessary within the clutch mechanism. Reinforced springs lead to more cohesive pressure, more plates to an increased frictional area.
OEM Numbers (for the purpose of comparison)
289614 - 286004 (PIAGGIO)