Finna Filter Cage Maico 250 400 440 (1973-1979)

Finna Air filters is a brand of reusable, high-performance foam air filters for motocross, enduro, and off-road motorcycles. Manufactured and distributed by UK-based MD Racing Products, Finna filters feature a dual-layer foam design to effectively trap dirt while maximizing airflow. They are a cost-effective alternative to paper air filters and are trusted by riders for their durable construction and superior engine protection.