Positioned in Harley-Davidson's custom - cruiser motorcycle lineup, the 2018 Harley-Davidson Softail Heritage Classic pairs a 1745 cc (106.5 cu in) air-cooled v2, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 86 HP (62.8 kW) at 5,020 rpm while maximum torque reaches 145 Nm (107 lb-ft) at 3,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 49.3 HP per liter and a 2,020 rpm working window between peak torque (3,000 rpm) and peak power (5,020 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Softail Heritage Classic measures 330 kg (728 lbs) wet (curb), translating to a power-to-weight ratio of 0.26 HP/kg (3.84 kg per horsepower). Rider ergonomics and chassis geometry center around a 680 mm (26.8 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,630 mm (64.2 in) wheelbase engineered for planted straight-line stability. The 18.9-liter (5 US gal) fuel tank paired with a rated consumption of 5.5 L/100 km provides an estimated theoretical range of roughly 344 km (214 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 4 indexed model years from 1997 to 2019, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
49.3 HP/L
Power-to-Weight
0.26 HP/kg (3.84 kg/HP)
Power Band Window
3,000–5,020 rpm
Theoretical Range
~344 km (214 mi)
Engine
Displacement1745.0 ccm (106.48 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsMilwaukee-Eight® 107, Optional Milwaukee-Eight® 114 Big Twin
Power86.0 HP (62.8 kW)) @ 5020 RPM
Torque145.0 Nm (14.8 kgf-m or 107.0 ft.lbs) @ 3000 RPM
Compression9.7:1
Bore x Stroke98.4 x 111.1 mm (3.9 x 4.4 inches)
Fuel SystemInjection. Electronic Sequential Port Fuel Injection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
ClutchMulti-plate with diaphragm spring in oil bath
DrivelinePrimary chain, 34/46 ratio
Performance
Fuel Consumption5.50 litres/100 km (18.2 km/l or 42.77 mpg)
Greenhouse Gases127.6 CO2 g/km. (CO2 - Carbon dioxide emission)
Exhaust2-into-2 shorty dual; catalyst in muffler
Chassis
Rake30.0°
Trail145 mm (5.7 inches)
Front SuspensionTelescopic fork
Rear SuspensionTwin shocks
Wheelbase1630 mm (64.2 inches)
Ground Clearance120 mm (4.7 inches)
Wheels & Brakes
Front Tyre130/90-B16
Rear Tyre150/80-B16
Front BrakesSingle disc. ABS. 4-piston
Rear BrakesSingle disc. ABS. 2-piston
WheelsGloss Black, Steel Laced
Dimensions & Weight
Dry Weight316.0 kg (696.7 pounds)
Weight incl.330.0 kg (727.5 pounds)
Power/Weight0.2722 HP/kg
Seat Height680 mm (26.8 inches) If adjustable, lowest setting.
Overall Length2415 mm (95.1 inches)
Fuel Capacity18.90 litres (4.99 US gallons)
Oil Capacity4.70 litres (4.97 US quarts)
Other
StarterElectric
Color OptionsVivid Black, Twisted Cherry, Silver Fortune, Olive Gold/Black Tempest, Industrial Gray Denim/Black Denim, Red Iron Denim, Legend Blue/Vivid Black
InstrumentsTank-mounted electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, RPM/gear display, fuel gauge with low fuel warning light and countdown feature, low oil pressure indicator light, engine diagnostics readout, LED indicator lights, 6-speed indicator light
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
