Increased air flow for more power. O-ring sealed idle mixture screw. Super G has a 2-1/16 throat at the butterfly and is recommended for use on 100-cubic-inch or larger Big Twin with performance modifications such as porting, cam change, big bore cylinders and/or stroker flywheels. We do not mark items as "gifts".If your tracking information states'Delivered', but you have not yet received your package you should. A doorstep, front porch, back porch, garage, window, etc. (A well-meaning neighbor might have taken your package inside their house for safekeeping or for protection against the weather). Wait 24 hours (in rare cases tracking may say delivered up to 24 hours prior to arrival). We understand that such delays can be very inconvenient when they occur, but we do not have any influence over such situations. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Air Intake & Fuel Delivery\Carburetors & Parts". The seller is "oemcycles" and is located in this country: US. This item can be shipped worldwide.