Uni Filter NU-8505ST Multi-Stage Competition Air Filter for Polaris ATV

The Uni Filter NU-8505ST is a high-performance multi-stage competition air filter designed specifically for Polaris ATVs. Engineered with advanced open-cell polyurethane foam technology, this filter delivers superior filtration and airflow for demanding off-road conditions.

Advanced Filtration Technology:

• Multi-stage open-cell polyurethane foam construction traps dirt particles throughout the entire filter depth
• Specially formulated filter oil creates a sticky barrier that captures contaminants on the foam's web-like cell structure
• Progressive filtration design prevents surface loading, maintaining optimal airflow throughout 80% of the filter's service life
• Superior dirt-holding capacity compared to paper filters

Key Benefits:

• Washable and reusable design provides excellent long-term value
• Easy maintenance - simply wash, re-oil, and reinstall
• Competition-grade performance for maximum engine protection
• Maintains consistent airflow even as dirt accumulates

This filter is pre-oiled and ready to install, providing immediate protection for your Polaris ATV's engine in the harshest riding conditions.