Key performance
Technical specifications
- Displacement
- 1573 cc → 1449 cc
- Power
- 73.0 ch @ 5300 tr/min (53.7 kW) → 63.0 ch @ 5300 tr/min (46.3 kW)
- Torque
- 123.4 Nm @ 3000 tr/min → 106.0 Nm @ 3500 tr/min
- Compression ratio
- 9.2:1 → 8.8:1
- Bore × stroke
- 95.3 x 111.3 mm (3.8 x 4.4 inches) → 95.3 x 101.6 mm (3.8 x 4.0 inches)
- Fuel system
- Injection → Carburettor
- Gearbox
- 6-speed → boîte à 5 rapports
- Clutch
- Multi-plate with diaphragm spring in oil bath → —
- Front suspension
- Fourche telescopique Ø 41 mm, déb : 129 mm → Fourche telescopique Ø 41 mm, déb : 142 mm
- Rear brakes
- Freinage 1 disque Ø 292 mm, étrier 2 pistons → Freinage 1 disque Ø 292 mm, étrier 4 pistons
- Front tyre
- 140/75-R17 → 130/90-16
- Rear tyre
- 200/55-R17 → 130/90-16
- Seat height
- 698.00 mm → 699.00 mm
- Wheelbase
- 1638.00 mm → 1630.00 mm
- Ground clearance
- — → 123.00 mm
- Length
- 2395.00 mm → 2396.00 mm
- Fuel capacity
- 18.92 L → 19.70 L
- Weight
- 323.90 kg → 319.00 kg
- Dry weight
- 314.80 kg → 320.00 kg
- New price
- 20 795 € → 20 445 €
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.

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
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