What category is the 1991 Harley-Davidson Fat Boy?

The 1991 Harley-Davidson Fat Boy has a Category of Custom / cruiser.

What is the engine size of the 1991 Harley-Davidson Fat Boy?

The 1991 Harley-Davidson Fat Boy has a Capacity: of 1337.00 ccm (81.58 cubic inches).

What type of engine does the 1991 Harley-Davidson Fat Boy have?

The 1991 Harley-Davidson Fat Boy has a Engine type of V2.

What is the engine power of the 1991 Harley-Davidson Fat Boy?

The 1991 Harley-Davidson Fat Boy has a Power of 49.00.

Is the 1991 Harley-Davidson Fat Boy air cooled or liquid cooled?

The 1991 Harley-Davidson Fat Boy has a Cooling system of Air.

How many gears does the 1991 Harley-Davidson Fat Boy have?

The 1991 Harley-Davidson Fat Boy has a Gearbox of 5-speed.

How much does the 1991 Harley-Davidson Fat Boy weigh?

The 1991 Harley-Davidson Fat Boy has a Weight incl. oil, gas, etc of 298.0 kg (657.0 pounds).

What is the top speed of the 1991 Harley-Davidson Fat Boy?

The 1991 Harley-Davidson Fat Boy has a Top speed of 148.0 km/h (92.0 mph).

Harley-Davidson Fat Boy - 1991 Specifications and Reviews

Name: 1991 Harley-Davidson Fat Boy
Brand: Harley-Davidson

The 1991 Harley-Davidson Fat Boy is an iconic cruiser built for riders seeking classic styling and commanding presence. Known for its distinctive solid disc wheels, low-slung stance, and Evolution V-twin engine, the Fat Boy delivers authentic cruiser character with accessible power. Its 1337cc air-cooled engine and substantial 298kg weight make it ideal for leisurely highway riding and commanding attention.

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1991

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General information
Category	Custom / cruiser
Year	1991
Model	Harley-Davidson Fat Boy
Engine and Transmission Specifications
Transmission typefinal drive	Belt
Gearbox	5-speed
Cooling system	Air
Fuel control	OHV
Valves per cylinder	2
Bore x stroke	88.8 x 108.0 mm (3.5 x 4.3 inches)
Compression	8.5:1
Power	49.00
Stroke	4
Engine type	V2
Capacity:	1337.00 ccm (81.58 cubic inches)

Physical measures and capacities
Weight incl. oil, gas, etc	298.0 kg (657.0 pounds)
Harley-Davidson Fat Boy dimensions and frame
Rear brakes	Single disc
Front brakes	Single disc
Rear tyre dimensions	MT 90-16
Front tyre dimensions	MT 90-16
Speed and acceleration
Top speed	148.0 km/h (92.0 mph)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	16.00 litres (4.23 gallons)

Performance Profile & Rider Fit

103 hp

Peak Power

4.8s

0-60 mph

92 mph

Top Speed

Best For

Track10%

City45%

Cornering30%

Daily Riding55%

Touring40%

Passenger55%

Rider Profile

Best For	Best suited to riders who already have some experience handling heavy, low-slung cruisers at parking-lot speeds and in traffic.
Purpose	Built for boulevard cruising and making a bold visual statement rather than outright performance or long-distance touring.
Rider Fit	The substantial 694 lb wet weight and low seat height demand confident low-speed strength and balance, though the low center of gravity helps once rolling.
Character	A muscular, iconic cruiser with a fat rear tire stance, strong low-end torque, and unmistakable classic Harley presence.
Not Ideal For	Not the right choice for riders seeking nimble cornering, off-road capability, or a lightweight, agile everyday commuter.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

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Rider Reviews

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MotorcycleDB Review

The 1991 Harley-Davidson Fat Boy is an iconic and timeless motorcycle model that has become a symbol of the Harley-Davidson brand. With its distinctive design, powerful engine, and smooth ride, the Fat Boy has remained a top choice for motorcycle enthusiasts for over two decades. Whether you're cruising down the highway or taking on winding country roads, the Fat Boy delivers a thrilling and exhilarating riding experience. Its classic styling and high-performance capabilities make it a standout choice for riders who value both form and function in their motorcycle. The 1991 Harley-Davidson Fat Boy offers a perfect blend of traditional design and modern engineering, making it a standout choice for riders of all levels. Its 1340cc V-twin engine provides plenty of power and torque, while its comfortable seating and smooth handling make it an ideal choice for long rides. With its iconic looks and exceptional performance, the 1991 Fat Boy continues to be a popular choice for motorcycle enthusiasts looking for a timeless and reliable ride.