Converter O2 bugs M18 to M12 (for injected). Polish color (Optional custom blue, polish, rainbow, or black power coating resist in heat). O2 sensor bug: We will put O2 sensor bug for harley davidson injected (Size M12 or M18).Our product is designed to harley davidson all series start from 1986 until 2022. Before place an order kindly message us type and year bike, midle or forward control, and inject or carbu. (THIS INFORMATION ITS NEEDED TO MAKE EXHAUST PLUG ON BIKE PERFECTLY). This item is in the category "Vehicle Parts & Accessories\Motorcycle & Scooter Parts & Accessories\Exhaust & Emission Systems\Exhaust System Kits". The seller is "hoonk_craft" and is located in this country: ID.