Key performance
Technical specifications
- Displacement
- 1584 cc → 1449 cc
- Power
- 73.0 ch @ 5300 tr/min (53.7 kW) → 63.0 ch @ 5300 tr/min (46.3 kW)
- Torque
- 127.0 Nm @ 3000 tr/min → 104.0 Nm @ 3200 tr/min
- Engine type
- V2, four-stroke → Bicylindre en V à 45°, 4 temps
- Cooling
- Air → par air
- Compression ratio
- 9.2:1 → 8.9 : 1
- Bore × stroke
- 95.3 x 111.1 mm (3.8 x 4.4 inches) → 95.3 x 101.6 mm
- Fuel system
- Injection. Electronic Sequential Port Fuel Injection (ESPFI) → Injection
- Valve timing
- Double Overhead Cams/Twin Cam (DOHC) → —
- Lubrication
- Pressurized, dry-sump → —
- Starter
- Electric → —
- Frame
- Mild steel tubular frame; rectangular section backbone; stamped, cast, and forged junctions; forged fender supports; MIG welded → Double berceau tubulaire en acier
- Gearbox
- 6-speed → boîte à 5 rapports
- Final drive
- Belt (final drive) → Courroie
- Clutch
- 9-plate, wet → —
- Front suspension
- 41.3mm telescopic, “beer can” covers → Fourche telescopique Ø 41 mm, déb : 142 mm
- Rear suspension
- Hidden, horizontal-mounted, coil-over → 2 amortisseurs sous le moteur, déb : 103 mm
- Front wheel travel
- 130 mm (5.1 inches) → —
- Rear wheel travel
- 109 mm (4.3 inches) → —
- Front brakes
- Single disc. 4-piston → Freinage 1 disque Ø 292 mm, étrier 4 pistons
- Rear brakes
- Single disc. 2-piston → 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
- 699.00 mm → 645.00 mm
- Wheelbase
- 1638.00 mm → —
- Ground clearance
- 130.00 mm → —
- Length
- 2396.00 mm → —
- Fuel capacity
- 19.70 L → 18.90 L
- Weight
- 330.00 kg → 319.00 kg
- Dry weight
- 314.80 kg → 302.00 kg
- New price
- 20 725 € → 20 445 €
Engine
- Displacement
- 1449 cc
- Power
- 63.0 ch @ 5300 tr/min (46.3 kW)
- Torque
- 104.0 Nm @ 3200 tr/min
- Engine type
- Bicylindre en V à 45°, 4 temps
- Cooling
- par air
- Compression ratio
- 8.9 : 1
- Bore × stroke
- 95.3 x 101.6 mm
- Valves/cylinder
- 2
- Fuel system
- Injection
Chassis
- Frame
- Double berceau tubulaire en acier
- Gearbox
- boîte à 5 rapports
- Final drive
- Courroie
- 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
- 645.00 mm
- Fuel capacity
- 18.90 L
- Weight
- 319.00 kg
- Dry weight
- 302.00 kg
- New price
- 20 445 €
Overview
Can you still talk about motorcycles without mentioning the Fat Boy? This 319 kg behemoth, with its full wheels and faux rigid frame, became an icon long before a certain Terminator made it his legendary mount. Contrary to what the heads-up display in the film shows, the motorcycle presented is actually a 1991 Harley-Davidson FLSTF Fat Boy, a detail that further sanctifies this machine. It's not just a motorcycle; it's a symbol, a block of metal and history that rolls.

Technically, it delivers figures that would surprise a modern racer: only 63 horsepower, but a torque of 104 Nm available from 3200 rpm. This Twin Cam 88 B, with its 1449 cc, doesn't aim for performance but for sensation. It pushes, it growls, it imposes a cadence. The five-speed gearbox and belt drive are part of the ritual, while the 18.9-liter fuel tank reminds you that this machine is made for long roads, not for nervous commutes.
On the road, the Fat Boy is a living contradiction. Its wide handlebar and 645 mm seat give it a deceptive docility. The weight, concentrated low, offers reassuring stability. But as soon as you seek a bit of lean angle, the wide footpegs scrape the asphalt with disconcerting speed. It's a motorcycle that imposes its rhythm, that dictates its driving style. The suspensions, with their modest travel, are clearly oriented towards comfort on the highway rather than precision in curves. The double 292 mm disc brakes are correct for the time, but they require anticipation when facing the mass in motion.
Compared to Japanese or European cruisers of the same period, the Harley-Davidson FLSTF Fat Boy doesn't play on the same field. It doesn't offer excessive power, surgical handling, or stylistic aggressiveness. Its value lies elsewhere: in this raw aesthetics, these gleaming chrome accents, this silhouette that seems to have come from another time. It is made for the traveler who seeks a presence, an identity, a machine with which he forms a duo. It's a motorcycle of character, not of numbers.
Today, with a price that exceeded 20,000 euros at its launch, it remains a desirable object for purists and collectors. It is not suitable for beginners, intimidated by its weight and physique. It is the antithesis of the modern, lightweight, and efficient motorcycle. But for those who accept its limitations and seek a unique sensory experience, the Fat Boy remains an irresistible proposition. It is the culmination of a philosophy where emotion takes precedence over performance, where style is an end in itself.
Practical info
- La moto est accessible aux permis : A
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