Positioned in Harley-Davidson's custom - cruiser motorcycle lineup, the 2015 Harley-Davidson Sportster Seventy-Two relies on a 1201.3 cc (73.3 cu in) air-cooled v2, four-stroke powerplant. In factory specification, peak output is rated at 65.7 HP (48 kW) at 6,000 rpm while maximum torque reaches 96 Nm (70.8 lb-ft) at 3,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 54.7 HP per liter and a 2,500 rpm working window between peak torque (3,500 rpm) and peak power (6,000 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Sportster Seventy-Two measures 251.7 kg (555 lbs) wet (curb), translating to a power-to-weight ratio of 0.26 HP/kg (3.83 kg per horsepower). Rider ergonomics and chassis geometry center around a 676 mm (26.6 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,524 mm (60 in) wheelbase engineered for planted straight-line stability. The 7.95-liter (2.1 US gal) fuel tank paired with a rated consumption of 4.9 L/100 km provides an estimated theoretical range of roughly 162 km (101 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 4 indexed model years from 2013 to 2016, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
54.7 HP/L
Power-to-Weight
0.26 HP/kg (3.83 kg/HP)
Power Band Window
3,500–6,000 rpm
Theoretical Range
~162 km (101 mi)
Engine
Displacement1201.3 ccm (73.30 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsAir-cooled, Evolution®
Power65.7 HP (48.0 kW)) @ 6000 RPM
Torque96.0 Nm (9.8 kgf-m or 70.8 ft.lbs) @ 3500 RPM
Compression10.0:1
Bore x Stroke88.9 x 96.8 mm (3.5 x 3.8 inches)
Fuel SystemInjection. Electronic Sequential Port Fuel Injection
LubricationDry sump
CoolingAir
Transmission
Gearbox5-speed
Final DriveBelt (final drive)
ClutchMulti-plate with diaphragm spring in oil bath
DrivelinePrimary chain, 57/38 ratio
Performance
Fuel Consumption4.90 litres/100 km (20.4 km/l or 48.00 mpg)
Greenhouse Gases113.7 CO2 g/km. (CO2 - Carbon dioxide emission)
ExhaustChrome dual shorty exhaust.
Chassis
Rake30.1°
Trail135 mm (5.3 inches)
Wheelbase1524 mm (60.0 inches)
Ground Clearance119 mm (4.7 inches)
Wheels & Brakes
Front TyreMH90-21
Rear Tyre150/80-B16
Front BrakesSingle disc. Dual-piston. Optional ABS.
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.
