INTAKE FLAPPER VALVES ™
These trick new flapper valves are installed in the top of the air box on Ski-Doo 800 models to provide additional airflow to the engine. They are activated by air box vacuum. When the stock intake begins to plug in deep powder snow conditions these valves open to deliver the necessary air flow that the engine demands. This substantially improves consistency when running in deep powder snow conditions. Sold per pair.