AEM Dryflow Pre-Filters are manufactured from a durable micro-screen material and pretreated with a proprietary hydrophobic process designed to prevent splashes of water or mud from saturating your Dryflow air filter. AEM Dryflow Pre-filters also stop small dirt particles; yet add little restriction.
 
Made of a durable micro-screen material
Protects your Dryflow air filter from water and mud
Also blocks small dirt particles
Adds very little air restriction