V-Twin Mfg. Rocker Box Set For Harley Twin Cam This rocker box set from V-Twin Manufacturing is die-cast from high quality aluminum alloy and precision machined using the latest CNC technology. This precision made 2-piece rocker box cover set with separate rocker arm carries features a show chrome finish. Features: Die-cast and CNC machined from high quality aluminum alloy Very rigid and stable rocker carrier Hassle-free installation Show chrome finish Includes top rocker covers, lower rocker covers, inner rocker arm carrier blocks, gaskets, seals and hardware for both the front and rear cylinder