Polini air box/ carburettor casing for Vespa PX125-200 & Largeframe 125-200cc scooters.

The enlarged capacity has 20% more volume. With a large carb or tuned engine the standard air box cannot provide enough air. With the Polini casing a larger volume of air is ready for when the engine requires it, resulting in improved throttle response at low engine speeds. The improved air flow also allows the engine to achieve a higher peak power.

Suitable for Dellorto SI carbs.

Polini 203.0171