What category is the 2018 Harley-Davidson Sportster Roadster Dark Custom?

The 2018 Harley-Davidson Sportster Roadster Dark Custom has a Category of Naked bike.

What type of engine does the 2018 Harley-Davidson Sportster Roadster Dark Custom have?

The 2018 Harley-Davidson Sportster Roadster Dark Custom has a Engine type of V2, four-stroke.

What is the engine power of the 2018 Harley-Davidson Sportster Roadster Dark Custom?

The 2018 Harley-Davidson Sportster Roadster Dark Custom has a Power of 67.00 HP (48.9 kW) @ 6000 RPM.

What is the torque of the 2018 Harley-Davidson Sportster Roadster Dark Custom?

The 2018 Harley-Davidson Sportster Roadster Dark Custom has a Torque of 96.00 Nm (9.8 kgf-m or 70.8 ft.lbs) @ 4000 RPM.

Is the 2018 Harley-Davidson Sportster Roadster Dark Custom air cooled or liquid cooled?

The 2018 Harley-Davidson Sportster Roadster Dark Custom has a Cooling system of Air.

How many gears does the 2018 Harley-Davidson Sportster Roadster Dark Custom have?

The 2018 Harley-Davidson Sportster Roadster Dark Custom has a Gearbox of 6-speed.

What is the fuel consumption of the 2018 Harley-Davidson Sportster Roadster Dark Custom?

The 2018 Harley-Davidson Sportster Roadster Dark Custom has a Fuel consumption of 5.20 litres/100 km (19.2 km/l or 45.23 mpg).

What is the seat height of the 2018 Harley-Davidson Sportster Roadster Dark Custom?

The 2018 Harley-Davidson Sportster Roadster Dark Custom has a Seat height of 785 mm (30.9 inches) If adjustable, lowest setting..

Harley-Davidson Sportster Roadster Dark Custom - 2018 Specifications and Reviews

Name: 2018 Harley-Davidson Sportster Roadster Dark Custom
Brand: Harley-Davidson

The 2018 Harley-Davidson Sportster Roadster Dark Custom appeals to riders seeking a lightweight, agile cruiser with classic styling and minimal bodywork. Known for its low seat height, nimble handling, and aggressive dark aesthetic, it excels as an accessible entry point to Harley-Davidson's lineup for new and experienced riders alike.

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General information
Category	Naked bike
Year	2018
Model	Harley-Davidson Sportster Roadster Dark Custom

Engine and Transmission Specifications
Exhaust system	Shorty-dual exhaust with chrome tapered mufflers with laser cut black heat shields
Greenhouse gases	120.6 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption	5.20 litres/100 km (19.2 km/l or 45.23 mpg)
Driveline	57/38 ratio
Clutch	Multi-plate with diaphragm spring in oil bath
Transmission type,final drive	Belt
Gearbox	6-speed
Cooling system	Air
Lubrication system	Dry sump
Fuel control	Double Overhead Cams/Twin Cam (DOHC)
Fuel system	Injection. Electronic Sequential Port Fuel Injection
Bore x Stroke	88.9 x 96.8 mm (3.5 x 3.8 inches)
Compression	10.0:1
Torque	96.00 Nm (9.8 kgf-m or 70.8 ft.lbs) @ 4000 RPM
Power	67.00 HP (48.9 kW) @ 6000 RPM
Engine details	Evolution® engine
Engine type	V2, four-stroke

Brakes, suspension, Frame and wheels
Wheels	Black Offset, Split 5-Spoke Cast Aluminum
Rear brakes	Single disc. Dual-piston. Optional ABS.
Front brakes	Single disc. Dual-piston. Optional ABS.
Rear tyre	150/70-R18
Front tyre	120/70-R19
Rear Suspension	Twin shocks
Front Suspension	Inverted fork
Trail	140 mm (5.5 inches)
Rake (fork angle)	28.9°
Physical measures and capacities
Oil capacity	2.60 litres (0.17 quarts)
Fuel capacity	12.50 litres (3.30 gallons)
Wheelbase	1,505 mm (59.3 inches)
Ground clearance	152 mm (6.0 inches)
Overall length	2,186 mm (86.1 inches)
Seat height	785 mm (30.9 inches) If adjustable, lowest setting.
Power/weight ratio	0.2792 HP/kg
Weight incl. oil, gas, etc	258.0 kg (568.8 pounds)
Dry weight	240.0 kg (529.1 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, low fuel warning, low battery, security system (optional)
Instruments	4-inch Speedometer mounted low and integrated into handlebar clamp electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, LED indicator lights
Starter	Electric
Color options	Vivid Black, Black Denim, Billet Silver/Vivid Black, Velocity Red Sunglo

Performance Profile & Rider Fit

67 hp

Peak Power

5.2s

0-60 mph

Best For

Track20%

City60%

Cornering50%

Daily Riding60%

Touring40%

Passenger40%

Rider Profile

Best For	Suitable for newer to intermediate riders who want a manageable, torque-driven cruiser-style naked bike without overwhelming power.
Purpose	Built for street cruising and short blasts with attitude, blending Dark Custom styling with a punchy low-RPM V-twin rather than outright performance.
Rider Fit	The low 785mm seat height and mid-weight chassis make it approachable for shorter riders, though the wide bars and cruiser-influenced ergonomics suit relaxed rather than aggressive riding postures.
Character	A muscular, torque-rich air-cooled V-twin with classic Harley sound and feel, offering charismatic low-end punch over high-rev thrills.
Not Ideal For	Not the right choice for riders seeking sharp sport-bike handling, 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

2018 Harley-Davidson Sportster Roadster Dark Custom Rider Ergonomics Assessment

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Feet:

At 785mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2018 Harley-Davidson Sportster Roadster Dark Custom, with a relaxed knee angle of around 120 degrees and a forward-leaning 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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Rider Reviews

Total comments: 1

MotorcycleDB Review

The 2018 Harley-Davidson Sportster Roadster Dark Custom is a sleek and stylish motorcycle with a powerful engine and agile handling. Its dark, minimalist design adds to its appeal, giving it a badass look that is sure to turn heads on the road. The comfortable seating position and adjustable suspension make for a smooth and enjoyable ride, while the responsive braking system provides added safety and control. Overall, the Sportster Roadster Dark Custom is a top choice for riders looking for a versatile and high-performing bike that delivers both style and substance. With its 1200cc engine and blacked-out details, the 2018 Harley-Davidson Sportster Roadster Dark Custom is a standout choice for riders seeking a bold and powerful motorcycle. Its compact size and nimble handling make it well-suited for urban riding, while its sporty performance capabilities make it a thrill on the open road. Additionally, the Dark Custom design gives this bike a unique and edgy aesthetic that sets it apart from other models on the market. Whether you're a seasoned rider or a newcomer to the Harley-Davidson family, the Sportster Roadster Dark Custom is a fantastic option for those seeking a high-performing and visually striking motorcycle.