Harley-Davidson Dyna Fat Bob Dark Custom - 2013 Specifications and Reviews

The 2013 Harley-Davidson Dyna Fat Bob Dark Custom targets riders seeking aggressive styling with authentic cruiser performance. Known for its blacked-out aesthetic, wide stance, and potent 103 cubic inch Twin Cam engine delivering strong low-end torque, it appeals to customization enthusiasts who value attitude and presence over sport-bike capabilities. Its belt-driven 6-speed transmission provides comfortable highway cruising with characteristic V-twin character.

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General information

CategoryCustom / cruiser
Year2013
ModelHarley-Davidson Dyna Fat Bob Dark Custom

Engine and Transmission Specifications

Exhaust systemChrome, “Tommy Gun” 2-1-2 collector exhaust with dual mufflers
Greenhouse gases129.9 CO
Fuel consumption5.60 litres/100 km (17.9 km/l or 42.00 mpg)
DrivelineChain, 34/46 ratio primar drive
ClutchMulti-plate with diaphragm spring in oil bath
Transmission type,final driveBelt
Gearbox6-speed
Cooling systemAir
Lubrication systemDry-sump
Fuel systemInjection. Electronic Sequential Port Fuel Injection
Bore x stroke98.4 x 111.3 mm (3.9 x 4.4 inches)
Compression9.6:1
Torque135.60 Nm (13.8 kgf-m or 100.0 ft.lbs) @ 3500
Engine detailsAir-cooled, Twin Cam 103™
Engine typeV2, four-stroke
Capacity:1687.97 ccm (103.00 cubic inches)

Brakes, suspension, Frame and wheels

WheelsMachined, Aluminum Slotted Disc
Rear brakesSingle disc. 2-piston torque-free floating
Front brakesDouble disc. 4-piston fixed
Rear tyre dimensions180/70-B16
Front tyre dimensions130/90-B16
Trail124 mm (4.9 inches)
Rake (fork angle)29.0°
 
 

Physical measures and capacities

Oil capacity2.80 litres (0.18 quarts)
Fuel capacity18.93 litres (5.00 gallons)
Wheelbase1,621 mm (63.8 inches)
Ground clearance124 mm (4.9 inches)
Overall length2,329 mm (91.7 inches)
Seat height663 mm (26.1 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc320.2 kg (706.0 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlack Denim.
LightHigh beam, directional light bar, neutral, low oil pressure, engine diagnostics, turn signals, 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

Performance Profile & Rider Fit

4.8s
0-60 mph (est.)

Best For

Track15%
City55%
Cornering45%
Daily Riding60%
Touring45%
Passenger40%

Rider Profile

Best ForSuited to riders who already have some experience with heavier, torque-driven cruisers and want to handle a big V-twin confidently at low speeds.
PurposeBuilt for muscular, fat-tired boulevard cruising and image-driven street riding rather than outright speed or distance touring.
Rider FitThe low seat height helps shorter riders reach the ground, but the wide bars, wide rear tire, and substantial curb weight demand decent upper-body strength for slow-speed maneuvering and parking.
CharacterA bold, muscular custom cruiser with a fat rear tire stance and thumping air-cooled V-twin character that rewards relaxed, torque-fueled riding over cornering finesse.
Not Ideal ForNot a good fit for riders seeking sharp cornering agility, high-speed touring comfort, or any serious off-road capability.

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

Rider Fit Visualizer

2013 Harley-Davidson Dyna Fat Bob Dark Custom Rider Ergonomics Assessment

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

Feet:

At 663mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2013 Harley-Davidson Dyna Fat Bob Dark Custom, 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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