Brass Shovelhead Rocker Box Split Oil LinesOld Stf Brass case to rocker box oil lines for Harley Davidson Big Twin 1966 1984 These brass oil lines are functional and beautiful! The split design routes oil to both rocker boxes immediately from startup, not sequentially from rear to front as the factory lines do, saving wear and tear on the rocker boxes and components within. Of course, the attractive yellow metal they're made of brings a little dose of class to most any a scoot! Kit includes a