Biker's Choice Cylinder Head Rocker Box Stud Kit Biker's Choice offers a quality replacement cylinder head rocker box stud kit for you vintage V-Twin motorcycle. Complete kit is zinc-plated to stop corrosion. Features: Kit includes one motor mount stud, eight long rocker cover studs, and two short rocker cover studs Zinc-plated One extra-short stud is for 1981-84 rocker covers