HARLEY-DAVIDSON Fat Boy (2010-2011) Specs, Performance & Photos

In 1990, the American motorcycle manufacturer introduced a new line of cruiser machines under the Harley-Davidson Fat Boy designation. The bike was first released in 1990 under the code name FLSTF until 2018, when it was coded as FLFB and FLFBS.

Some said the Fat Boy name was a contraction of Fat Man and Little Boy, two atomic bombs dropped on Japan during WW2. The name was thought to be a symbolic insult to Japanese motorcycles. Still, the H-D's vice president debunked that, saying it was descriptive and had nothing to do with Japanese competitors.

Over its production period, the Harley-Davidson Fat Boy underwent various modifications, such as a seamless exhaust, a displacement increase in 2000 from 1,330cc to 1,450cc, and one in 2007 from 1,450cc to 1,584cc.

Besides the displacement increases, the bike received several design modifications, including a Fat Bob fuel tank with an integrated instrument panel, an internally wired handlebar, a rear chopper fender, a custom front fender, and silver full-disc aluminum wheels with a bullet hole design.

In the performance department, the 2009 Harley-Davidson Fat Boy was powered by a 1,584cc air-cooled V-twin engine with an Electronic Sequential Port Fuel Injection (ESPFI) system that delivered smooth power, fast engine response, and 127 Nm (94 lb-ft) torque with maximum strength at 3,000 rpm.

When it was released in 2009, the bike had an MSRP of $16,544; in 2023, the bike was for sale with an average price of $6,600.