Twin Air Air Filter Kit Honda Trx450R This grease-free foam ring ensures optimal air flow and serves as a breathable gasket for improved contact with your airbox. Features: Coarse open-pore foam catches airborne dirt, grime, and sand Fine open-pore inner foam acts as second filter to trap the smallest particles while ensuring maximum air passage Adhesive withstands repeated cleaning Smaller than stock to increase air space and circulation around filter Note: Image is for reference only. Filter will vary depending on make and model of vehicle.