Power Blackout This takes dark to a new level. A powerful one. New gloss black Screamin’ Eagle Air-Cooled Twin Cam 110B engine, gloss black lower forks, axle nut covers, handlebar and riser. Black brake lever and hydraulic clutch assembly. Black over/under shotgun exhaust with slash cut mufflers. Take our word for it, it is blacked out from front to back and head to toe in attitude. We went out to check the pulse of the street and then into the garage. The Fat Boy S rolled out. Raw custom attitude with the most powerful engine you can get in a cruiser this year.