The contessa is a killer sport 70cc bore for the zuma minarelli vertical. Polini’s classic 2 ring design, built to last. When you recieve this kit, it’s clear that your money went into the development department to crank out a quality item. This is great for an all around street scoot, and can be used with stock carb.

Replacement piston

Polini Corsa Zuma Replacement Piston Yamaha