UNI Air Filter Yamaha Dirtbike NU-3257ST

Designed to fit in the factory air box exactly like original filter

The best selling replacement air filter for competition motorcycles and ATVs

Unique two stage design allows for easy and complete cleaning

Dual layer of foam, can be serviced separately

Thin Ultra Seal base is virtually impossible to tear and has a built-in "Grease Groove"Used by factory Yamaha, Kawasaki and Suzuki off-road