Uni Filter NU-2241ST Two-Stage Foam Air Filter

The Uni Filter NU-2241ST is a premium two-stage foam air filter designed specifically for competition motorcycles and ATVs. This replacement filter is engineered to fit precisely in factory air boxes exactly like the original equipment filter.

Key Features:

• Unique two-stage design with dual layers of foam that can be serviced separately for easy and complete cleaning
• Thin Ultra Seal base construction is virtually impossible to tear and features a built-in "grease groove" for superior sealing
• Drop-in replacement that fits factory air boxes without modification
• Trusted by factory Yamaha, Kawasaki, and Suzuki off-road racing teams
• Best-selling replacement air filter for competitive powersports applications

The dual-layer foam construction provides superior filtration while maintaining excellent airflow, and the ability to service each layer independently extends the filter's service life. The advanced Ultra Seal base ensures a positive seal against the air box, preventing dirt bypass and protecting your engine.