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These trick flapper valves are installed in the top side of the airbox on Ski-Doo XP 800 models to provide additional airflow to the engine. They are activated by airbox vacuum. When the stock intake begins to plug in deep powder snow conditions, these valves open to deliver the necessary airflow that the engine demands. This substantially improves consistency when running in deep powder snow conditions. Sold per pair.
WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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