Arlen Ness AN-18-825 Stage 1 Big Sucker Air Cleaner Kit Chrome for Sportster 88-21 w/EFI or CV Carburettor Re-Uses Stock Oval 2 Bolt CoverDescription for Arlen Ness Big Sucker Performance Air Cleaner Kit 18 825 Use one of these kits to eliminate the need for banjo fittings, hoses and filter Each kit features a one piece cast aluminum backing plate carb support bracket and all necessary hardware and instructions Stage I kit includes a high flow filter Stage II kit includes a 20% larger high flow filter and accepts an 8 in. round Ness or 8 in. round OEM outer cover Breather passages exit