Harley-Davidson Softail Fat Boy - 2013 Specifications and Reviews

The 2013 Harley-Davidson Softail Fat Boy is an iconic custom cruiser that appeals to riders seeking classic styling with modern performance. Powered by the 1688cc Twin Cam 103B engine delivering robust low-end torque, it's renowned for its distinctive fat tires, aggressive stance, and timeless design that defines American motorcycle culture.

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General information

CategoryCustom / cruiser
Year2013
ModelHarley-Davidson Softail Fat Boy

Engine and Transmission Specifications

Exhaust systemChrome, over/under shotgun exhaust with dual mufflers
Greenhouse gases129.9 CO
Fuel consumption5.60 litres/100 km (17.9 km/l or 42.00 mpg)
DrivelinePrimary chain, 34/46 ratio
ClutchMulti-plate with diaphragm spring in oil bath
Transmission type,final driveBelt
Gearbox6-speed
Cooling systemAir
Fuel systemInjection. Electronic Sequential Port Fuel Injection (ESPFI)
Bore x stroke98.4 x 111.3 mm (3.9 x 4.4 inches)
Compression9.6:1
Torque133.84 Nm (13.6 kgf-m or 98.7 ft.lbs) @ 3000
Engine detailsAir-cooled, Twin Cam 103B™
Engine typeV2, four-stroke
Capacity:1687.97 ccm (103.00 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsSilver, Bullet Hole Disc Cast Aluminum
Rear brakesSingle disc. 2-piston
Front brakesDouble disc. 4-piston
Rear tyre dimensions200/55-R17
Front tyre dimensions140/75-R17
Trail147 mm (5.8 inches)
Rake (fork angle)31.0°

Physical measures and capacities

Oil capacity3.30 litres (0.22 quarts)
Fuel capacity18.93 litres (5.00 gallons)
Wheelbase1,638 mm (64.5 inches)
Ground clearance130 mm (5.1 inches)
Overall length2,395 mm (94.3 inches)
Seat height635 mm (25.0 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc330.2 kg (728.0 pounds)
Dry weight313.0 kg (690.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsMidnight Pearl, Ember Red Sunglo/Merlot, Vivid Black, Big Blue Pearl
LightHigh beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings
InstrumentsTank-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
StarterElectric

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 ForBest suited to riders who already have some experience handling heavy motorcycles at low speeds, though its low seat height keeps it approachable.
PurposeBuilt for style-driven cruising and boulevard presence rather than outright performance or long-distance efficiency.
Rider FitThe low seat and relaxed reach make it accessible, but its substantial weight demands confident strength and balance at parking-lot speeds.
CharacterA bold, muscular cruiser with iconic Fat Boy looks, a thumping V-twin character, and a commanding, laid-back riding stance.
Not Ideal ForNot 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

2013 Harley-Davidson Softail Fat Boy Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 635mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2013 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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