Polini Clutch Spring Kit for 2-Shoe Minarelli Clutches

Polini Clutch Spring Kit for Yamaha Zuma 50, Vino 50, and any other Minarelli engine with a 105mm 2-shoe clutch. Includes 3 sets of different stiffness springs for tuning. Increase in spring rates is as follows:

Raw Spring: +20% (5500 RPM)
Yellow Spring: +35% (6000 RPM)
Blue Spring: +50% (6500 RPM)

Made in Italy!