New Uni air filter kit for Honda, Kawasaki, Suzuki, Truimph and Yamaha models. They will fit carburetors with an inlet OD of 2 1/8" to 2 1/4" or 53mm to 55mm. These filters do require oil and are completely washable. They feature black caps, dark-gray / black water-retardant foam element. Jetting changes may be required. Sold as a 2-pack. Made in the USA.