Harley-Davidson Sportster Forty-Eight Dark Custom - 2013 Specifications and Reviews

The 2013 Harley-Davidson Sportster Forty-Eight Dark Custom is a minimalist cruiser designed for riders seeking aggressive styling with manageable performance. Its 1201cc air-cooled V-twin engine delivers solid low-end torque ideal for urban riding and cruising, while the blacked-out aesthetic and stripped-down design define its dark custom character. Best known for combining classic Sportster heritage with contemporary custom styling, it appeals to riders valuing style and accessibility.

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General information

CategoryCustom / cruiser
Year2013
ModelHarley-Davidson Sportster Forty-Eight Dark Custom

Engine and Transmission Specifications

Exhaust systemChrome, staggered shorty exhaust with dual slash-cut mufflers
Greenhouse gases113.7 CO
Fuel consumption4.90 litres/100 km (20.4 km/l or 48.00 mpg)
DrivelineChain, 57/38 ratio primary drive
Transmission type,final driveBelt
Gearbox6-speed
Cooling systemAir
Fuel systemInjection. Electronic Sequential Port Fuel Injection (ESPFI)
Bore x stroke88.9 x 96.8 mm (3.5 x 3.8 inches)
Compression9.7:1
Torque107.12 Nm (10.9 kgf-m or 79.0 ft.lbs) @ 4000
Engine detailsAir-cooled, Evolution®
Engine typeV2, four-stroke
Capacity:1201.25 ccm (73.30 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsBlack, Laced Steel
Rear brakesSingle disc. Single-piston
Front brakesSingle disc. Dual-piston
Rear tyre dimensions150/80-B16
Front tyre dimensions130/90-B16
Trail107 mm (4.2 inches)
Rake (fork angle)30.0°

Physical measures and capacities

Oil capacity2.60 litres (0.17 quarts)
Fuel capacity7.95 litres (2.10 gallons)
Wheelbase1,519 mm (59.8 inches)
Overall length2,250 mm (88.6 inches)
Seat height660 mm (26.0 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc259.9 kg (573.0 pounds)
Dry weight250.8 kg (553.0 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlack
LightHigh beam, neutral, low oil pressure, turn signals, engine diagnostics, low fuel warning, low battery, security system (optional)
Instruments4-inch Speedometer mounted low and integrated into handlebar clamp electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, LED indicator lights
StarterElectric

Performance Profile & Rider Fit

65 hp
Peak Power
5.8s
0-60 mph

Best For

Track10%
City65%
Cornering35%
Daily Riding55%
Touring30%
Passenger25%

Rider Profile

Best ForSuited to riders from intermediate levels up who want an easy-going, low-slung cruiser rather than a beginner-only or expert-only machine.
PurposeBuilt primarily as a stylish, stripped-down urban cruiser for short rides and boulevard cruising rather than outright speed or distance touring.
Rider FitThe very low seat height and forward-set footpegs make it approachable for shorter riders, though the low ground clearance and limited lean angle demand a relaxed, upright riding style.
CharacterA gritty, blacked-out custom cruiser with big torque off the line, a thumping air-cooled V-twin soundtrack, and classic Harley drag-style attitude.
Not Ideal ForNot a good fit for riders seeking sharp cornering ability, off-road capability, or long-distance touring comfort with a passenger.

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

Rider Fit Visualizer

2013 Harley-Davidson Sportster Forty-Eight Dark Custom Rider Ergonomics Assessment

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

Feet:

At 660mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2013 Harley-Davidson Sportster Forty-Eight 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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