2008 Harley-Davidson FXCW - Rocker, 2008 Harley-Davidson® Rocker The Rocker replicates authentic hard-tail styling, but has a hidden twist. The Rockertail rear end mounts a broad expanse of rear-fender sheetmetal directly to the swing arm, just an inch over a massive 240 mm x 18-inch rear tire. When the Rocker rolls, the rear fender and wheel move together as the Rockertail glides through 3.4 inches of travel. Custom paint matched handle bars, aftermarket HD intake, Vance & Hines pipes 2008 Harley-Davidson® Rocker The Rocker replicates authentic hard-tail styling, but has a hidden twist. The Rockertail rear end mounts a broad expanse of rear-fender sheetmetal directly to the swing arm, just an inch over a massive 240 mm x 18-inch rear tire. When the Rocker rolls, the rear fender and wheel move together as the Rockertail glides through 3.4 inches of travel.