Uni Filter NU-8502ST Multi-Stage Competition Air Filter for Polaris ATV

The Uni Filter NU-8502ST is a high-performance multi-stage competition air filter designed specifically for Polaris ATVs. This premium foam air filter delivers superior filtration and airflow for demanding off-road conditions.

How Uni Foam Filters Work:

Uni filters utilize open-cell polyurethane foam technology that's wetted with specially formulated filter oil. The oil is suspended throughout the web-like cell structure of the foam, creating a sticky barrier that traps dirt particles on contact. Unlike paper filters that load from the surface, Uni's foam design allows the entire thickness of the filter to capture contaminants progressively. As outer strands become loaded with dirt, the wetted strands downstream continue trapping particles, preventing surface loading and maintaining airflow throughout 80% of the filter's service life.

Key Features:

• Multi-stage filtration design for maximum dirt-stopping power
• Open-cell polyurethane foam construction
• Progressive depth loading prevents premature air restriction
• Washable and reusable for long-term cost savings
• Competition-grade performance for extreme conditions
• Direct replacement for Polaris ATV applications

Maintenance:

When the filter becomes dirty, simply wash it with Uni filter cleaner, allow it to dry, re-oil with Uni filter oil, and reinstall. This reusable design makes Uni filters an economical and environmentally friendly choice for serious ATV enthusiasts.