What category is the 2015 Harley-Davidson Softail Fat Boy?

The 2015 Harley-Davidson Softail Fat Boy has a Category of Custom / cruiser.

What type of engine does the 2015 Harley-Davidson Softail Fat Boy have?

The 2015 Harley-Davidson Softail Fat Boy has a Engine type of V2, four-stroke.

What is the engine power of the 2015 Harley-Davidson Softail Fat Boy?

The 2015 Harley-Davidson Softail Fat Boy has a Power of 77.78 HP (56.8 kW) @ 5250 RPM.

What is the torque of the 2015 Harley-Davidson Softail Fat Boy?

The 2015 Harley-Davidson Softail Fat Boy has a Torque of 132.00 Nm (13.5 kgf-m or 97.4 ft.lbs) @ 3250 RPM.

Is the 2015 Harley-Davidson Softail Fat Boy air cooled or liquid cooled?

The 2015 Harley-Davidson Softail Fat Boy has a Cooling system of Air.

How many gears does the 2015 Harley-Davidson Softail Fat Boy have?

The 2015 Harley-Davidson Softail Fat Boy has a Gearbox of 6-speed.

What is the fuel consumption of the 2015 Harley-Davidson Softail Fat Boy?

The 2015 Harley-Davidson Softail Fat Boy has a Fuel consumption of 5.60 litres/100 km (17.9 km/l or 42.00 mpg).

How much does the 2015 Harley-Davidson Softail Fat Boy weigh?

The 2015 Harley-Davidson Softail Fat Boy has a Dry weight of 313.0 kg (690.0 pounds).

How much does the 2015 Harley-Davidson Softail Fat Boy weigh?

The 2015 Harley-Davidson Softail Fat Boy has a Weight incl. oil, gas, etc of 330.2 kg (728.0 pounds).

What is the seat height of the 2015 Harley-Davidson Softail Fat Boy?

The 2015 Harley-Davidson Softail Fat Boy has a Seat height of 635 mm (25.0 inches) If adjustable, lowest setting..

Harley-Davidson Softail Fat Boy - 2015 Specifications and Reviews

Name: 2015 Harley-Davidson Softail Fat Boy
Brand: Harley-Davidson

The 2015 Harley-Davidson Softail Fat Boy is an iconic cruiser designed for riders seeking classic American style and commanding road presence. Known for its muscular styling, low-slung seating position, and accessible 49-cubic-inch engine, it delivers accessible performance with authentic Harley character. Best suited for cruiser enthusiasts who prioritize presence and heritage over sporty agility.

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2015

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General information
Category	Custom / cruiser
Year	2015
Model	Harley-Davidson Softail Fat Boy
Engine and Transmission Specifications
Exhaust system	Chrome, over/under shotgun exhaust with dual mufflers
Greenhouse gases	129.9 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption	5.60 litres/100 km (17.9 km/l or 42.00 mpg)
Driveline	Primary chain, 34/46 ratio
Clutch	Multi-plate with diaphragm spring in oil bath
Transmission type,final drive	Belt
Gearbox	6-speed
Cooling system	Air
Fuel system	Injection. Electronic Sequential Port Fuel Injection
Bore x Stroke	98.4 x 111.3 mm (3.9 x 4.4 inches)
Compression	10.0:1
Torque	132.00 Nm (13.5 kgf-m or 97.4 ft.lbs) @ 3250 RPM
Power	77.78 HP (56.8 kW) @ 5250 RPM
Engine details	Air-cooled, Twin Cam 103B™
Engine type	V2, four-stroke

Brakes, suspension, Frame and wheels
Wheels	Mirror Chrome Aluminum Bullet Hole Disc
Rear brakes	Single disc. 2-piston.
Front brakes	Double disc. ABS. 4-piston.
Rear tyre	200/55-R17
Front tyre	140/75-R17
Trail	147 mm (5.8 inches)
Rake (fork angle)	31.0°

Physical measures and capacities
Oil capacity	3.30 litres (0.22 quarts)
Fuel capacity	18.93 litres (5.00 gallons)
Wheelbase	1,638 mm (64.5 inches)
Ground clearance	130 mm (5.1 inches)
Overall length	2,395 mm (94.3 inches)
Seat height	635 mm (25.0 inches) If adjustable, lowest setting.
Power/weight ratio	0.2485 HP/kg
Weight incl. oil, gas, etc	330.2 kg (728.0 pounds)
Dry weight	313.0 kg (690.0 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Light	High beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings
Instruments	Tank-mounted electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, RPM/gear display, fuel gauge with low fuel warning light and countdown feature, low oil pressure indicator light, engine diagnostics readout, LED indicator lights, 6-speed indicator light
Starter	Electric
Color options	Black Magic, Mysterious Red Sunglo, Amber Whiskey/Vivid Black, Superior Blue, Brilliant Silver Pearl, Vivid Black /Blackened Cayenne Sunglo, Brilliant Silver Pearl, Vivid Black

Performance Profile & Rider Fit

86 hp

Peak Power

4.8s

0-60 mph

Best For

Track10%

City55%

Cornering30%

Daily Riding60%

Touring55%

Passenger60%

Rider Profile

Best For	Best suited to riders who already have some experience handling heavy motorcycles at low speeds, though its low seat height keeps it approachable.
Purpose	Built for style-driven cruising and boulevard presence rather than outright performance or long-distance efficiency.
Rider Fit	The low seat and relaxed reach make it accessible, but its substantial weight demands confident strength and balance at parking-lot speeds.
Character	A bold, muscular cruiser with iconic Fat Boy looks, a thumping V-twin character, and a commanding, laid-back riding stance.
Not Ideal For	Not the right choice for riders seeking sharp cornering agility, off-road capability, or lightweight nimble handling.

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

Rider Fit Visualizer

2015 Harley-Davidson Softail Fat Boy Rider Ergonomics Assessment

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Inseam (optional)

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Feet:

At 635mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2015 Harley-Davidson Softail Fat Boy, with a cramped knee angle of around 70 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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