Trask Performance Mikuni Hsr 42/45/48 Air Cleaner Adapter Clamps to all Mikuni HSR 42, 45 and 48 carburetors to allow installation of air cleaner housings with both Keihin CV and S&S bolt patterns. CNC machined billet 6061 aluminum. Note: Installation of another air cleaner assembly on a S&S Super E or G carb will require the use of a special enrichment device which is available as MCS 544620 (Kuryakyn), 505101 (A-Just), 502005 (Morris) or 977810 (S&S). Mikuni HSR 42/45/48 carburetor. We will accept your request at our earliest opportunity. This includes Republic Of Ireland. Please do not ask us to lower the value of goods this is illegal and we do not want to get involved in this kind of activity.