Malossi “boxed“ racing air filter is an enclosed air filter version to fully protect from dirt and water. Marginally quitter and subtle look. Can easily be taken out and oiled. Slightly angled with 38mm connection for Dellorto and Motoforce carburettors from 12-17.5mm and Arreche carburettors up to 21mm. Also suitable for other carbs with 38mm connection. Supplied with clamp.