MiniBowl Aircleaners: 
Fits CV Carbs and EFI HDs
Cotton washable aircleaner element, these aircleaners are tiny but have better performances than stock paper or foam filters. 
MiniBowl: Ø100mm x 55mm
Includes a backing plate and all necessary mounting hardware
Necessary use of a Back Plate for a CV carbs - Sold Separately
Made in the Italy.