Uni Filter NU-2343ST Multi-Stage Competition Air Filter for Motorcycles & ATVs

The Uni Filter NU-2343ST is a premium multi-stage competition air filter engineered as a direct drop-in replacement for the factory airbox. Trusted by factory off-road teams and serious competition riders, this filter delivers exceptional filtration without sacrificing airflow.

Key Features:

• Direct factory fit — designed to seat in the OEM airbox exactly like the original filter, requiring no modifications
• Two-stage dual-layer foam construction — an outer coarse foam layer captures large dirt and debris particles, while the inner fine foam layer stops smaller abrasive particles before they can reach the engine
• Independently serviceable layers — each foam stage can be cleaned and re-oiled separately for a thorough, complete service
• Ultra-seal base — thin, virtually tear-resistant base features a built-in grease groove for an airtight seal against the airbox, preventing unfiltered air bypass
• Reusable and washable — clean, re-oil, and reinstall for long-term cost efficiency over disposable filters
• Factory team proven — used by factory Yamaha, Kawasaki, and Suzuki off-road competition programs

The NU-2343ST is one of the best-selling replacement air filters for competition motorcycles and ATVs, offering superior dirt-stopping capability and reliable engine protection in demanding off-road conditions.