Arlen Ness AN-18-500 Stage 1 Big Sucker Air Cleaner Kit Natural for Big Twin 93-99Description for Arlen Ness Stage I Natural Big Sucker Performance Air Filter without Cover for CV Carbs 18 500 Using one of these kits eliminates the need for banjo fittings, hoses and filter Each kit features a one piece billet backing plate carb support bracket and all necessary hardware and instructions Stage I kit includes a high flow filter and accepts 93 13 oval or round OEM outer cover Breather passages exit at the mouth of the carburetor,