2019 Harley-Davidson Road King Special Technical Analysis & Specification Breakdown
At the heart of the 2019 Harley-Davidson Road King Special touring motorcycle, Harley-Davidson utilizes a 1868 cc (114 cu in) air-cooled v2, four-stroke layout. In factory specification, peak output is rated at 87 HP (63.5 kW) at 5,000 rpm while maximum torque reaches 165.4 Nm (122 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 46.6 HP per liter and a 2,000 rpm working window between peak torque (3,000 rpm) and peak power (5,000 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Road King Special measures 372 kg (820 lbs) wet (curb), translating to a power-to-weight ratio of 0.23 HP/kg (4.28 kg per horsepower). Rider ergonomics and chassis geometry center around a 695 mm (27.4 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,625 mm (64 in) wheelbase engineered for planted straight-line stability. The 22.71-liter (6 US gal) fuel tank paired with a rated consumption of 5.47 L/100 km provides an estimated theoretical range of roughly 415 km (258 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 8 indexed model years from 2018 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
46.6 HP/L
Power-to-Weight
0.23 HP/kg (4.28 kg/HP)
Power Band Window
3,000–5,000 rpm
Theoretical Range
~415 km (258 mi)
Engine
Displacement1868.0 ccm (113.99 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsIntegrated Oil-Cooler
Power87.0 HP (63.5 kW)) @ 5000 RPM
Torque165.4 Nm (16.9 kgf-m or 122.0 ft.lbs) @ 3000 RPM
Compression9.6:1
Bore x Stroke102.0 x 114.3 mm (4.0 x 4.5 inches)
Fuel SystemInjection. Electronic Sequential Port Fuel Injection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
LubricationDry sump
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
ClutchMulti-plate with diaphragm spring in oil bath
DrivelineChain, 34/46 ratio primary drive
Performance
Fuel Consumption5.47 litres/100 km (18.3 km/l or 43.00 mpg)
Greenhouse Gases126.9 CO2 g/km. (CO2 - Carbon dioxide emission)
ExhaustBlack, 2-1-2 dual exhaust with tapered mufflers
Chassis
Rake26.0°
Trail170 mm (6.7 inches)
Front SuspensionTelescopic fork
Rear SuspensionTwin shocks
Wheelbase1625 mm (64.0 inches)
Ground Clearance124 mm (4.9 inches)
Wheels & Brakes
Front Tyre130/60-B19
Rear Tyre180/55-B18
Front BrakesDouble disc. ABS. 4-piston
Rear BrakesSingle disc. ABS. 4-piston
WheelsBlack, Turbine Cast Aluminum
Dimensions & Weight
Dry Weight355.0 kg (782.6 pounds)
Weight incl.372.0 kg (820.1 pounds)
Power/Weight0.2451 HP/kg
Seat Height695 mm (27.4 inches) If adjustable, lowest setting.
Overall Length2420 mm (95.3 inches)
Fuel Capacity22.71 litres (6.00 US gallons)
Oil Capacity4.90 litres (5.18 US quarts)
Other
StarterElectric
Color OptionsVivid Black, Twisted Cherry, Bonneville Salt Denim, Midnight Blue, Scorched Orange/Black Denim
InstrumentsTank-mounted electronic speedometer with odometer, time-of-day clock on odometer; dual trip meter; low fuel indicator light and mileage countdown feature; low oil pressure indicator light; engine diagnostics readout; LED indicator lights; 6-speed indicator light
LightHigh beam, running lights, front fender running lights, directional light bar, neutral, low oil pressure, engine diagnostics, turn signals, security system (optional), 6-speed, low fuel warning, cruise control (optional), ABS (optional)
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.
