2015 Harley-Davidson Sportster Iron 883 Dark Custom Technical Analysis & Specification Breakdown
At the heart of the 2015 Harley-Davidson Sportster Iron 883 Dark Custom custom - cruiser motorcycle, Harley-Davidson utilizes a 883.3 cc (53.9 cu in) air-cooled v2, four-stroke layout. In factory specification, peak output is rated at 52.3 HP (38.2 kW) at 5,750 rpm while maximum torque reaches 74.6 Nm (55 lb-ft) at 3,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 59.2 HP per liter and a 2,250 rpm working window between peak torque (3,500 rpm) and peak power (5,750 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Sportster Iron 883 Dark Custom measures 260 kg (573 lbs) wet (curb), translating to a power-to-weight ratio of 0.2 HP/kg (4.97 kg per horsepower). Rider ergonomics and chassis geometry center around a 735 mm (28.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,510 mm (59.4 in) wheelbase engineered for balanced agility and highway composure. The 12.49-liter (3.3 US gal) fuel tank paired with a rated consumption of 4.61 L/100 km provides an estimated theoretical range of roughly 271 km (168 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 5 indexed model years from 2013 to 2018, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
59.2 HP/L
Power-to-Weight
0.2 HP/kg (4.97 kg/HP)
Power Band Window
3,500–5,750 rpm
Theoretical Range
~271 km (168 mi)
Engine
Displacement883.3 ccm (53.90 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsAir-cooled, Evolution®
Power52.3 HP (38.2 kW)) @ 5750 RPM
Torque74.6 Nm (7.6 kgf-m or 55.0 ft.lbs) @ 3500 RPM
Compression8.9:1
Bore x Stroke76.2 x 96.8 mm (3.0 x 3.8 inches)
Fuel SystemInjection. Electronic Sequential Port Fuel Injection
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
ClutchMulti-plate with diaphragm spring in oil bath
DrivelineChain, 57/34 ratio primary drive
Performance
Fuel Consumption4.61 litres/100 km (21.7 km/l or 51.02 mpg)
Greenhouse Gases107.0 CO2 g/km. (CO2 - Carbon dioxide emission)
ExhaustChrome, staggered shorty exhaust with dual mufflers
Chassis
Rake30.5°
Trail117 mm (4.6 inches)
Wheelbase1510 mm (59.4 inches)
Ground Clearance120 mm (4.7 inches)
Wheels & Brakes
Front Tyre100/90-B19
Rear Tyre150/80-B16
Front BrakesSingle disc. Optional ABS. Dual-piston.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.