Uni Filter NU-2399ST Two-Stage Air Filter for Kawasaki Dirt Bikes

The Uni Filter NU-2399ST is a high-performance two-stage replacement air filter designed specifically for Kawasaki dirt bikes. This filter is engineered to fit perfectly in the factory airbox exactly like the original equipment filter, ensuring proper sealing and optimal performance.

Key Features:

• Unique two-stage design with dual layers of foam that separate for easy and complete cleaning
• Ultra Seal grease groove built into the thin, virtually tear-proof base for superior sealing
• Unsurpassed airflow while providing excellent dirt stopping capability
• Each foam layer can be serviced separately for maximum cleaning effectiveness
• Trusted by factory Yamaha, Kawasaki, and Suzuki off-road racing teams
• Made in the U.S.A. with premium materials for long-lasting durability

This filter is the best-selling replacement air filter choice for competition motorcycles and ATVs. It cleans easily with grease-cutting dishwashing detergent and can be oiled and reused indefinitely, providing exceptional value and performance. The two-stage construction allows the filter to come apart completely, enabling thorough cleaning of both foam layers and ensuring maximum airflow is maintained throughout the filter's service life.