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 This item fits the following applications: 1983-1986 Yamaha TT600