2009Harley-Davidson Softail Fat Boy

20 fields on record

The 2009 Harley-Davidson Softail Fat Boy is an iconic cruiser with solid disc wheels. Its air-cooled 1,584cc V-twin makes 125 Nm through a six-speed gearbox and belt drive, for a top speed of about 155 km/h. A very low 654 mm seat and 284 kg dry weight give it a planted feel.

Capacity: 1584.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 6-speed
Dry weight: 284.0 kg
Seat height: 654 mm
Power: 68.0 HP (50.0 kW)

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Other years 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering30%

City riding55%

Daily riding60%

Touring55%

Two-up60%

Track10%

Best for: Built for style-driven cruising and boulevard presence rather than outright performance or long-distance efficiency.
Built for: A bold, muscular cruiser with iconic Fat Boy looks, a thumping V-twin character, and a commanding, laid-back riding stance.
Not ideal for: Not the right choice for riders seeking sharp cornering agility, off-road capability, or lightweight nimble handling.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 654mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2009 Harley-Davidson Softail Fat Boy, with a cramped knee angle of around 70 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 1584.0 ccm
Power: 68.0 HP (50.0 kW)
Torque: 125.0 Nm (12.7 kgf-m) @ 3000 RPM
Engine type: V-Twin, four-stroke
Power/weight ratio: 0.2394 HP/kg (dry)
Bore x stroke: 95.3 x 111.1 mm
Compression: 9.2:1
Cooling system: Air
Fuel system: Injection
Starting: Electric
Valves per cylinder: 2

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Belt
Clutch: Multi-plate with diaphragm spring in oil bath

Performance

Top speed: 155.0 km/h (96.3 mph)

Dimensions & weight

Seat height: 654 mm
Dry weight: 284.0 kg

Brakes & wheels

Front brakes: Single disc

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	1998	2003	2009	2014	2019
Capacity	1338 cc	1450 cc	1584 cc	1688 cc	1746 cc
Dry weight	284 kg	284 kg	284 kg	313 kg	304 kg
Seat height	654 mm	654 mm	654 mm	635 mm	675 mm
Fuel capacity	—	—	—	18.9 L	18.9 L