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#P6634
Polini Big Evolution reed valve for Piaggio/ Gilera/ Vespa 50cc 2-stroke scooters.
The Big Evo' reed valve has been completely designed by Polini. The two piece construction allows for precision production of the components. The large section venturi is vulcanised for extra reed sealing and carbon fibre petals are standard for Polini.
The crankcases will need to be machined to accept the larger reed valve.
Includes gasket.
Polini 213.0055
