Key performance

63 ch
Power
🔧
1449 cc
Displacement
⚖️
319 kg
Weight
🏎️
160 km/h
Top speed
💺
699 mm
Seat height
19.7 L
Fuel capacity
💰
20 445 €
New price
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Technical specifications

Engine

Displacement
1449 cc
Power
63.0 ch @ 5300 tr/min (46.3 kW)
Torque
106.0 Nm @ 3500 tr/min
Engine type
V2, four-stroke
Cooling
Air
Compression ratio
8.8:1
Bore × stroke
95.3 x 101.6 mm (3.8 x 4.0 inches)
Valves/cylinder
2
Fuel system
Carburettor

Chassis

Frame
Double berceau tubulaire en acier
Gearbox
boîte à 5 rapports
Final drive
Belt   (final drive)
Front suspension
Fourche telescopique Ø 41 mm, déb : 142 mm
Rear suspension
2 amortisseurs sous le moteur, déb : 103 mm

Brakes

Front brakes
Freinage 1 disque Ø 292 mm, étrier 4 pistons
Rear brakes
Freinage 1 disque Ø 292 mm, étrier 4 pistons
Front tyre
130/90-16
Front tyre pressure
2.48 bar
Rear tyre
130/90-16
Rear tyre pressure
2.90 bar

Dimensions

Seat height
699.00 mm
Wheelbase
1630.00 mm
Ground clearance
123.00 mm
Length
2396.00 mm
Fuel capacity
19.70 L
Weight
319.00 kg
Dry weight
320.00 kg
New price
20 445 €

Overview

Imagine a motorcycle so ingrained in popular culture that it becomes a character in its own right. It’s not just a machine; it's a symbol. Contrary to what the heads-up display in *Terminator* shows, the motorcycle featured in the film is actually a 1991 Harley-Davidson FLSTF Fat Boy. This appearance etched the image of the ultimate custom, massive and indestructible, into the collective unconscious. The 2003 version we have under scrutiny inherits this myth, with the heavy task of carrying it into the new millennium.

Harley-Davidson FLSTF Fat Boy

Beneath its appearance of a gentle giant, the Fat Boy hides some notable technical developments. At the heart of the matter is this Twin Cam 88B with a displacement of 1450 cm3. With 63 horsepower, it’s far from the figures of the Japanese bikes, but the torque is a weapon of mass destruction: 106 Nm at 3500 rpm. That’s where its character lies. The integrated balancer shaft has calmed the vibrations without eradicating them, preserving that visceral rumble characteristic of Harleys. The belt drive is remarkably smooth, and the five-speed gearbox, although sometimes a bit agricultural, does the job. But let’s admit it, with a weight approaching 320 kg fully fueled, one doesn’t expect miracles of agility.

Handling has improved since the early models. The Softail chassis, with its faux swingarm, offers a perfect line but a limited rear suspension. The new components of 2003 are firmer, better absorbing imperfections without transforming the beast into a roadster. However, it’s important to keep in mind that the ground clearance of 123 mm is a joke. From the first moderately aggressive turn, the wide footpegs, like surfboards, scrape the asphalt with a blood-curdling noise. The brakes, two 292 mm discs, are acceptable for the time but require a firm grip to stop this mass.

So, who is this monument for? Certainly not for the hurried track rider or the timid beginner. The Harley-Davidson FLSTF Fat Boy S is a motorcycle for the aesthete, for the one who places sensation, style, and symbol above all else. It's a rolling chrome sculpture, a journey through time. For 20,445 euros at the time, one bought much more than a means of transport: one acquired a fragment of American legend. It is slow, heavy, and terribly imprecise by modern standards. But when that V-Twin rumbles beneath you and the looks turn your way, all its technical weaknesses suddenly become insignificant details. That's the whole paradox of the thing.

Practical info

  • La moto est accessible aux permis : A

Indicators & positioning

Weight-to-power ratio
0.19 ch/kg
🔄
Torque / weight
0.33 Nm/kg
🔧
Volumetric power
42.9 ch/L
In category Custom / cruiser · 725-2898cc displacement (3428 motorcycles compared)
Power 62 ch Top 67%
46 ch median 74 ch 140 ch
Weight 319 kg Lighter than 33%
226 kg median 300 kg 378 kg
P/W ratio 0.19 ch/kg Top 82%
0.18 median 0.25 0.41 ch/kg

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