Cruisers

2005Harley-Davidson FLSTFI Fat Boy

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The 2005 Harley-Davidson FLSTFI Fat Boy is the fuel-injected version of the iconic Softail. Its air-cooled 1,449cc V-twin makes 67 hp and 102 Nm through a five-speed gearbox and belt drive. A very low 645 mm seat, 307 kg dry weight and 18.9-litre tank give it presence.

Capacity: 1449.0 ccm
Engine: V-Twin
Gearbox: 5-speed
Dry weight: 307.0 kg
Seat height: 645 mm
Power: 67.0 HP (49.3 kW)

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What’s new for the 2005 Harley-Davidson FLSTFI Fat Boy

vs the 2004

Spec	2004	2005
Wet weight	324.0 kg (714.3 pounds)	not listed

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 645mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2005 Harley-Davidson FLSTFI 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: 1449.0 ccm
Power: 67.0 HP (49.3 kW)
Torque: 102.0 Nm (10.4 kgf-m)
Engine type: V-Twin
Power/weight ratio: 0.2182 HP/kg (dry)
Bore x stroke: 95.3 x 101.6 mm
Compression: 8.8:1
Cooling system: Air
Fuel system: Injection
Valves per cylinder: 2

Transmission

Gearbox: 5-speed
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: 645 mm
Dry weight: 307.0 kg
Fuel capacity: 18.90 litres
Ground clearance: 130 mm

Chassis & suspension

Rake (fork angle): 32.0°
Trail: 147 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 406 mm
Rear brakes: Single disc
Rear brakes diameter: 406 mm
Front tyre: 90/90-16
Rear tyre: 150/80-16

Other

Color options: 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

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 cc	1449 cc	1449 cc	1449 cc	1442 cc
Dry weight	320 kg	320 kg	307 kg	307 kg	310 kg
Seat height	699 mm	699 mm	645 mm	645 mm	—
Fuel capacity	18.9 L	19.7 L	18.9 L	18.9 L	18.9 L