HARLEY-DAVIDSON Fat Boy (2006-2007) Specs, Performance & Photos

The Harley-Davidson Fat Boy was a cruiser motorcycle manufactured by H-D since 1990. The bike went under the FLSTF designation from 1990 to 2017, and from 2017, it was coded as FLFB and FLFBS.

Some said that the bike's name came from the Fat Man and Little Boy atomic bombs dropped on Japan during WW2, but that proved to be just speculation. The H-D's vice president Scott Miller confirmed that its name was descriptive and came from its wide appearance when viewed head-on.

In 2006, the American motorcycle maker launched the Harley-Davidson Fat Boy, a cruiser machine with a custom appearance known for its distinctive style, muscular look, and powerful engine.

Over its production time, the bike underwent several modifications, including the displacement increase for the 2000-year model, the introduction of bullet-style turn signals, alarm, and immobilizer in 2002, along with other design and technical changes.

The 2006 machine was similar to its predecessors, wearing valanced fenders covering the full disc aluminum wheels, a round headlight with a chromed housing, a stylish fuel tank, a dual exhaust system, and many chromed accents.

As for power, the 2006 Harley-Davidson Fat Boy took its muscled from a 1,450cc four-stroke V-twin air-cooled engine that was available in some countries either with a carburetor or a fuel injection system, delivering 67 hp with a peak at 5,200 rpm and 117 Nm (86 lb-ft) torque at 3,500 rpm.