Uni Filter NU-4150ST Multi-Stage Competition Air Filter

The Uni Filter NU-4150ST is a multi-stage competition air filter designed to fit in stock air boxes exactly like the OEM filter while trapping dirt and dust in two layers of foam. This washable, reusable foam air filter provides superior engine protection for Honda CR250 and CR250RX motorcycles.

Two-Stage Filtration Technology:

• Large pore pre-filter layer captures bigger particles
• Small pore inner filter prevents engine-damaging grit from reaching the cylinder
• Polyurethane foam construction offers superior dirt capturing abilities and easy cleaning for repeated use
• High air flow design with superior filtration for enhanced performance

Uni Filter has manufactured comprehensive foam air filtration solutions since 1969, with products now covering motorcycles, ATVs, UTVs, and off-road trucks. This competition-grade filter delivers the engine protection and airflow performance demanded by powersports enthusiasts.