Uni Filter NU-4112ST Two-Stage High-Flow Air Filter for Honda Dirt Bikes

The Uni Filter NU-4112ST is a premium two-stage replacement air filter engineered specifically for Honda dirt bikes. This high-performance filter is designed to fit precisely in your factory airbox, providing a direct replacement for the OEM filter with superior filtration and airflow characteristics.

Key Features:

• Two-stage foam design separates for thorough cleaning and maximum airflow
• Dual-layer foam construction can be serviced independently for convenience
• Ultra Seal grease groove on the sealing surface ensures positive seal and prevents dirt bypass
• Thin, tear-resistant base material provides durability and long service life
• Drop-in fit matches OEM filter dimensions for perfect airbox fitment
• Washable and reusable—clean with grease-cutting dish soap, re-oil, and reinstall
• Made in the USA with quality materials

Uni Filter's two-stage design delivers unsurpassed performance in both airflow and dirt-stopping capability, making it the best-selling replacement air filter for competition motorcycles and ATVs. Trusted by factory off-road racing teams, this filter provides the protection and performance demanded by serious riders while offering easy maintenance and indefinite reusability.