The hidden fuel line system has been designed for custom choppers, bobbers and most show bike motorcycles using an S&S Super E or G carburetor. Kit includes weld-on steel gas tank bung, brass gas line adapter with o-ring, brass on/off fuel petcock switch. Since the petcock switch will be attached directly to the S&S carburetor, you will loose your fuel reserve option. This kit will allow you to totally hide your fuel line, since you can weld our fuel tank bung out of sight close to the frame backbone, route the fuel line through the back bone and top motor mount and then come out just behind your S&S carburetor (see pictures below). This unique motorcycle part is a must for custom bikes featuring a super-clean look.