Cruisers

2003Harley-Davidson FLSTFI Fat Boy

20 fields on record

The 2003 Harley-Davidson FLSTFI Fat Boy is an iconic cruiser that appeals to riders seeking classic style and commanding presence. Powered by a 1449cc V-twin engine with fuel injection, it delivers 105 lb-ft of torque for relaxed highway cruising. Known for its distinctive fat tires and timeless design, the Fat Boy remains one of Harley's most recognizable and sought-after models.

Capacity: 1449.0 ccm
Engine: V -Twin twin, four-stroke
Gearbox: Not on record
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Dry weight: 320.0 kg
Seat height: 699 mm
Power: 67.0 HP

⇄ Compare with another bike All model years ⚠ Recalls listed (1)

What’s new for the 2003 Harley-Davidson FLSTFI Fat Boy

vs the 2002

Spec	2002	2003
Engine capacity	1449.00 ccm (88.42 cubic inches)	1449.0 ccm (88.42 cubic inches)
Torque	105.00	105.0 Nm (10.7 kgf-m or 77.4 ft.lbs)
Seat height	—	699 mm (27.5 inches)
Fuel capacity	18.90 litres (4.99 gallons)	19.70 litres (5.20 US gallons)
Front brakes	Single disc	not listed
Rear brakes	Single disc	not listed
Wheelbase	1,630 mm (64.2 inches)	1630 mm (64.2 inches)

Other years 2002 2003 2004 2005 2006

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering30%

City riding45%

Daily riding55%

Touring55%

Two-up55%

Track10%

Best for: Built for laid-back boulevard cruising and iconic Fat Boy style rather than outright performance.
Built for: A torque-rich, thumping V-twin cruiser that rewards relaxed, unhurried riding over twisty back roads.
Not ideal for: Not a good fit for riders seeking sharp cornering agility, off-road capability, or high-speed sport performance.

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 699mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2003 Harley-Davidson FLSTFI 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: 1449.0 ccm
Power: 67.0 HP
Torque: 105.0 Nm (10.7 kgf-m)
Engine type: V -Twin twin, four-stroke
Power/weight ratio: 0.2094 HP/kg
Bore x stroke: 95.3 x 101.6 mm
Compression: 8.8:1
Cooling system: Air
Fuel system: Injection

Transmission

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

Dimensions & weight

Wheelbase: 1630 mm
Overall length: 2396 mm
Seat height: 699 mm
Dry weight: 320.0 kg
Fuel capacity: 19.70 litres
Ground clearance: 123 mm

Other

Color options: 2-tone sterling silver & vivid black, vivid black, gunmetal pearl, luxury rich red pearl, white pearl, luxury blue pearl

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	2002	2003	2004	2005	2006
Capacity	1449.00 ccm (88.42 cubic inches)	1449.00 ccm (88.42 cubic inches)	1449.00 ccm (88.42 cubic inches)	1449.00 ccm (88.42 cubic inches)	1442.15 ccm (88.00 cubic inches)
Dry weight	320.0 kg (705.5 pounds)	320.0 kg (705.5 pounds)	307.0 kg (676.8 pounds)	307.0 kg (676.8 pounds)	309.8 kg (683.0 pounds)
Seat height	—	699 mm (27.5 inches)	645 mm (25.4 inches)	645 mm (25.4 inches)	—
Fuel capacity	18.90 litres (4.99 gallons)	19.70 litres (5.20 gallons)	18.90 litres (4.99 gallons)	18.90 litres (4.99 gallons)	18.92 litres (5.00 gallons)
Color options	—	2-tone sterling silver & vivid black, vivid black, gunmetal pearl, luxury rich red pearl, white pearl, luxury blue pearl	Vivid black, brilliant silver, sierra red, smokey gold, luxury blue, glacier white pearl, lava red sunglo, two-tone impact blue and vivid black, two-tone luxury teal and brilliant silver, two-tone sierra red and brilliant silver, two-tone smokey gold and	Vivid black, brilliant silver, sierra red, smokey gold, luxury blue, glacier white pearl, lava red sunglo, two-tone impact blue and vivid black, two-tone luxury teal and brilliant silver, two-tone sierra red and brilliant silver, two-tone smokey gold and	Vivid black, brilliant silver, black pearl, deep cobalt, glacier white pearl, yellow pearl, brandy wine sunglo, two-tone chopper blue and brilliant silver, two-tone black cherry and black pearl, two-tone fire red pearl and vivid black, two-tone deep cobal

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Safety Recalls

⚠ 1 open recall

EQUIPMENT:OTHER:LABELSApr 2005 · 05V151000

CERTAIN SOFTAIL MOTORCYCLES FAIL TO COMPLY WITH THE REQUIREMENTS OF PART 567, 'CERTIFICATION.' THE VIN/CERTIFICATION LABEL CONTAINS INCORRECT TIRE SIZE AND INFLATION PRESSURES FOR THE FRONT WHEEL. THE LABEL STATES THE TIRE SIZE IS MT90B21 AND THE INFLATION PRESSURE AS 30 PSI, WHEREAS THE CORRECT TIRE SIZE IS MT90B16, AND THE CORRECT INFLATION PRESSURE IS 36 PSI.

Risk: THE CERTIFICATION LABEL IS INCORRECT GIVING IMPROPER INFORMATION.

Remedy: HARLEY- DAVIDSON WILL MAIL INSTRUCTIONS ALONG WITH CORRECTED FEDERAL CERTIFICATION LABEL. IF AN OWNER SO DESIRES, A DEALER CAN INSTALL THE LABEL FOR THEM. THE RECALL BEGAN ON JUNE 6, 2005. OWNERS MAY CONTACT HARLEY-DAVIDSON AT 1-414-343-4056.

Source: NHTSA. View all Harley-Davidson recalls →