1999Harley-Davidson FLSTF Fat Boy

★ 5.0

26 fields on record

The 1999 Harley-Davidson FLSTF Fat Boy is a classic cruiser that appeals to riders seeking authentic American motorcycle styling with comfortable, low-slung ergonomics. Known for its iconic wide rear tire and minimalist design, this V-twin powered machine delivers accessible performance with its 1338cc engine producing 56 horsepower and 97 pound-feet of torque.

Capacity: 1338.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 5-speed
Wet weight: 305.0 kg
Seat height: 680 mm
Power: 56.0 HP (41.2 kW)

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Other years 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering30%

City riding45%

Daily riding55%

Touring45%

Two-up55%

Track5%

Best for: Built for stylish boulevard cruising and short-to-medium rides where image and torque-driven presence matter more than outright speed.
Built for: A muscular, classic American cruiser that delivers strong low-end torque and a commanding presence rather than sharp handling or high-rev thrills.
Not ideal for: Not a fit for riders seeking agile cornering, off-road capability, or lightweight everyday maneuverability.

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 680mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 1999 Harley-Davidson FLSTF Fat Boy, with a cramped knee angle of around 75 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: 1338.0 ccm
Power: 56.0 HP (41.2 kW)
Torque: 97.0 Nm (9.9 kgf-m)
Engine type: V-Twin, four-stroke
Power/weight ratio: 0.1836 HP/kg (wet)
Compression: 8.5:1
Cooling system: Air
Starting: Electric
Valves per cylinder: 2

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Belt

Performance

Top speed: 152.0 km/h (94.4 mph)

Dimensions & weight

Wheelbase: 1632 mm
Overall length: 2395 mm
Seat height: 680 mm
Wet weight: 305.0 kg
Fuel capacity: 15.90 litres
Front percentage of weight: 46.6
Dry weight: Not on record - add it

Chassis & suspension

Front wheel travel: 129 mm
Rear wheel travel: 103 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 291 mm
Rear brakes: Single disc
Rear brakes diameter: 291 mm

Specs last verified against published sources: September 2026.

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	1999	2002	2005	2008	2011
Capacity	1338 cc	1449 cc	1449 cc	1584 cc	1584 cc
Dry weight	—	320 kg	320 kg	310 kg	315 kg
Seat height	680 mm	—	699 mm	—	699 mm
Fuel capacity	15.9 L	18.9 L	19.7 L	18.9 L	18.9 L