Harley-Davidson Sportster Iron 883 Dark Custom - 2018 Specifications and Reviews

The 2018 Harley-Davidson Sportster Iron 883 Dark Custom is a lightweight, accessible cruiser designed for new and returning riders seeking authentic Harley styling with manageable performance. Its minimalist dark aesthetic, low 25.7-inch seat height, and nimble 544-pound dry weight make it ideal for urban commuting and laid-back weekend cruising. Known for its retro iron-head character and approachable power delivery, this entry-level Sportster emphasizes classic motorcycle culture over raw performance.

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General information

CategoryCustom / cruiser
Year2018
ModelHarley-Davidson Sportster Iron 883 Dark Custom
 
 

Engine and Transmission Specifications

Exhaust systemBlack, staggered shorty exhaust with dual mufflers
Greenhouse gases111.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption4.80 litres/100 km (20.8 km/l or 49.00 mpg)
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 (ESPFI)
Bore x Stroke76.2 x 96.8 mm (3.0 x 3.8 inches)
Compression9.0:1
Torque68.00 Nm (6.9 kgf-m or 50.2 ft.lbs) @ 4750 RPM
Power51.00 HP (37.2 kW) @ 6000 RPM
Engine detailsAir-cooled, Evolution®
Engine typeV2, four-stroke

Brakes, suspension, Frame and wheels

WheelsBlack 9 Spoke with Machined Highlights
Rear brakes diameter300 mm (11.8 inches)
Rear brakesSingle disc. Optional ABS, dual piston
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc. Optional ABS, dual piston
Rear tyre150/80-B16
Front tyre100/90-B19
Rear SuspensionTwin shocks.
Front SuspensionTelescopic fork
Trail117 mm (4.6 inches)
Rake (fork angle)26.0°
 
 

Physical measures and capacities

Oil capacity2.60 litres (0.17 quarts)
Fuel capacity12.50 litres (3.30 gallons)
Wheelbase1,515 mm (59.6 inches)
Ground clearance100 mm (3.9 inches)
Overall length2,179 mm (85.8 inches)
Seat height653 mm (25.7 inches) If adjustable, lowest setting.
Power/weight ratio0.2065 HP/kg
Weight incl. oil, gas, etc256.0 kg (564.4 pounds)
Dry weight247.0 kg (544.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
LightHigh beam, neutral, low oil pressure, turn signals, engine diagnostics, low fuel warning, low battery, security system (optional)
InstrumentsHandlebar-mounted electronic speedometer with odometer, time-of-day clock, dual tripmeter, low fuel warning light, low oil pressure light, engine diagnostics readout, LED indicator lights
StarterElectric
Color optionsBlack Denim, Charcoal Denim, Olive Gold, Red Iron Denim, Hard Candy Hot Rod Red Flake

Performance Profile & Rider Fit

51 hp
Peak Power
6s
0-60 mph

Best For

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

Rider Profile

Best ForApproachable for newer riders thanks to modest power and a low seat height, though the weight and cruiser geometry still reward some prior riding experience.
PurposeBuilt for laid-back street cruising and boulevard style rather than outright performance or long-distance touring.
Rider FitThe low 653mm seat and relaxed, feet-forward riding position suit shorter riders and casual, low-effort riding sessions.
CharacterA classic blacked-out custom cruiser with punchy low-end torque, a thumping air-cooled V-twin soundtrack, and understated dark styling.
Not Ideal ForNot the right choice for riders wanting sharp cornering agility, high-speed touring comfort, or any kind of 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 Iron 883 Dark Custom Rider Ergonomics Assessment

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

Feet:

At 653mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2018 Harley-Davidson Sportster Iron 883 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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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2018 Harley-Davidson Sportster Iron 883 Dark Custom is a stylish and powerful motorcycle that delivers a thrilling ride. Its dark custom design exudes a tough and gritty aesthetic, making it stand out on the road. The blacked-out components, including the engine, exhaust, and handlebars, give this bike a distinct and edgy look. The 883cc Evolution engine provides plenty of torque for a responsive and exhilarating riding experience. With its low-slung profile and comfortable seating position, the Iron 883 is a joy to ride for long distances. Overall, the 2018 Harley-Davidson Sportster Iron 883 Dark Custom is a top-notch motorcycle that combines style, performance, and comfort. Its dark custom design and powerful engine make it a standout choice for riders who are looking for a bold and thrilling ride. Whether you're cruising around town or hitting the open road, this bike is sure to turn heads and deliver an unforgettable riding experience.
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