Uni Filter NU-4132ST Two-Stage Foam Air Filter for Honda Dirt Bikes

The Uni Filter NU-4132ST is a high-performance two-stage foam air filter engineered specifically for Honda off-road motorcycles. This competition-grade replacement filter is designed to fit precisely in your factory airbox exactly like the original equipment filter, ensuring proper sealing and optimal engine protection.

Key Features:

• Unique two-stage design with dual foam layers that separate for thorough cleaning and maximum airflow
• Thin Ultra Seal base material is virtually tear-proof and features a built-in grease groove for superior sealing
• Unsurpassed airflow characteristics combined with excellent dirt-stopping capabilities
• Drop-in replacement fits stock airbox perfectly without modification
• Each foam layer can be serviced independently for convenient maintenance
• Reusable and cleanable with simple grease-cutting dish soap—clean, oil, and reinstall indefinitely
• Trusted by factory racing teams including Yamaha, Kawasaki, and Suzuki off-road programs
• Made in the U.S.A.

Uni Filter's patented two-stage construction allows you to separate the filter for complete and easy cleaning, ensuring your engine receives optimal airflow while maintaining maximum filtration efficiency. The Ultra Seal grease groove provides a positive seal against your airbox, preventing dirt bypass that can damage your engine.