The all-new Revolution XTM engine is pure Harley- Davidson V-Twin muscle specifically designed for urban riding. It is liquid-cooled to maintain peak performance no matter how high the mercury climbs or how long you're in gridlock. There's a single overhead cam. Four valves per head. And a smooth- shifting 6-speed transmission. It all translates to one thing: instant response to the twist you give the throttle when stop turns to go. When the street is where you live, it starts to live in you. True of a rider. True of a motorcycle. The look of the Harley-Davidson Street 500 motorcycles comes from the street. Born out of the custom tradition of tearing down a motorcycle to its raw, minimal essence and letting the pure rebellion inherent in the lines of the machine come screaming through. This is the essential attitude. It doesn't require much explanation. Installed Accessories Include, Mirror Extensions; Screamin Eagle Spark Plug Wires.