Key performance

63 ch
Power
🔧
1442 cc
Displacement
⚖️
324 kg
Weight
🏎️
160 km/h
Top speed
💺
645 mm
Seat height
18.9 L
Fuel capacity
💰
20 445 €
New price
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Technical specifications

Changements 2003 2006
Displacement
1449 cc 1442 cc
Torque
106.0 Nm @ 3500 tr/min 115.3 Nm @ 3000 tr/min
Compression ratio
8.8:1 8.9:1
Valve timing
Double Overhead Cams/Twin Cam (DOHC)
Gearbox
boîte à 5 rapports 5-speed
Clutch
Multi-plate with diaphragm spring in oil bath
Front brakes
Freinage 1 disque Ø 292 mm, étrier 4 pistons Single disc
Rear brakes
Freinage 1 disque Ø 292 mm, étrier 4 pistons Single disc
Front tyre
130/90-16 MT90-B16
Rear tyre
130/90-16 150/80-B16
Seat height
699.00 mm 645.00 mm
Wheelbase
1630.00 mm 1638.00 mm
Ground clearance
123.00 mm 130.00 mm
Length
2396.00 mm 2395.00 mm
Fuel capacity
19.70 L 18.92 L
Weight
319.00 kg 323.90 kg
Dry weight
320.00 kg 309.80 kg

Engine

Displacement
1442 cc
Power
63.0 ch @ 5300 tr/min (46.3 kW)
Torque
115.3 Nm @ 3000 tr/min
Engine type
V2, four-stroke
Cooling
Air
Compression ratio
8.9:1
Bore × stroke
95.3 x 101.6 mm (3.8 x 4.0 inches)
Valves/cylinder
2
Fuel system
Carburettor
Valve timing
Double Overhead Cams/Twin Cam (DOHC)

Chassis

Frame
Double berceau tubulaire en acier
Gearbox
5-speed
Final drive
Belt   (final drive)
Clutch
Multi-plate with diaphragm spring in oil bath
Front suspension
Fourche telescopique Ø 41 mm, déb : 142 mm
Rear suspension
2 amortisseurs sous le moteur, déb : 103 mm

Brakes

Front brakes
Single disc
Rear brakes
Single disc
Front tyre
MT90-B16
Front tyre pressure
2.48 bar
Rear tyre
150/80-B16
Rear tyre pressure
2.90 bar

Dimensions

Seat height
645.00 mm
Wheelbase
1638.00 mm
Ground clearance
130.00 mm
Length
2395.00 mm
Fuel capacity
18.92 L
Weight
323.90 kg
Dry weight
309.80 kg
New price
20 445 €

Overview

Imagine a block of chrome rolling, a monument on two wheels that breathes the America of wide-open spaces and smoky asphalt. This isn't a motorcycle, it's a symbol, a myth forged in the collective imagination by a memorable cinematic appearance. Contrary to what the heads-up display of the Terminator shows, the motorcycle featured in the film is actually a 1991 Harley-Davidson FLSTF Fat Boy, a detail for purists, but a fact that has forever sealed the legend of this machine. Fifteen years later, in 2006, the beast has transformed, but its soul remains intact.

Harley-Davidson FLSTF Fat Boy

Beneath its appearance of a gentle giant, the Fat Boy now hides the Twin Cam 88B, an evolution that brings a touch of civility to this world of brutes. With 115 Nm of torque available from 3000 rpm, the V-twin delivers a heavy and constant thrust, typical of large cruisers, even if the announced 63 horsepower will never make you a king of top speed. The real revolution lies in its balance shaft, which significantly reduces vibrations, making long straight stretches much less exhausting for the wrists. In terms of handling, Harley has also made efforts, with reworked rear suspension that swallows imperfections with a little more rigor, without transforming the machine into a sportbike.

But let's be clear, you don't choose a Fat Boy for its agility in corners. With its 324 kg fully fueled and a wheelbase of over a meter sixty, the beast dictates its tempo: slow, majestic, relentless. The braking, although better than on previous generations, remains behind the weight of the machine. And beware of tight turns, the wide footpegs will quickly scrape the asphalt if you venture too far. It's a motorcycle to show off, to listen to the characteristic rumble of its exhaust, to feel this unique physical presence on the road.

The target audience is obvious: the traveler who prioritizes style and sensation over pure performance, the chrome aesthete, the one for whom every ride is a parade. At more than 20,000 euros new, it's a passion investment, far from rational considerations. Faced with a Honda VTX 1800 or a Yamaha V-Star 1300, more powerful and often more affordable, the 2006 Fat Boy doesn't play in the same league. It sells a dream, an icon, a piece of motorized history. It is the archetype of the American cruiser, with its assumed flaws and undeniable charisma. For the rider who accepts its limitations, it is a unique experience. For others, it will be nothing more than a magnificent and slow rolling decoration.

Practical info

  • La moto est accessible aux permis : A

Indicators & positioning

Weight-to-power ratio
0.19 ch/kg
🔄
Torque / weight
0.36 Nm/kg
🔧
Volumetric power
43.1 ch/L
In category Custom / cruiser · 721-2884cc displacement (3428 motorcycles compared)
Power 62 ch Top 67%
46 ch median 74 ch 140 ch
Weight 324 kg Lighter than 30%
226 kg median 300 kg 378 kg
P/W ratio 0.19 ch/kg Top 86%
0.18 median 0.25 0.41 ch/kg

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