Touring Motorcycles

2018Harley-Davidson Road King

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The 2018 Harley-Davidson Road King is a classic cruiser designed for riders seeking comfort and commanding presence on long highway rides. Known for its iconic styling, low seat height, and spacious saddlebags, it delivers smooth cruising capability with its air-cooled engine and comfortable ergonomics. This bike excels as a laid-back touring machine that prioritizes rider comfort and timeless American motorcycle aesthetics.

Capacity: 1746.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 6-speed
Dry weight: 363.0 kg
Seat height: 705 mm
Power: 89.0 HP (65.0 kW) @ 5450 RPM

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What’s new for the 2018 Harley-Davidson Road King

vs the 2017

Spec	2017	2018
Power	87.0 HP (63.5 kW) @ 5000 RPM	89.0 HP (65.0 kW) @ 5450 RPM
Torque	138.0 Nm (14.1 kgf-m or 101.8 ft.lbs) @ 3250 RPM	150.0 Nm (15.3 kgf-m or 110.6 ft.lbs) @ 3200 RPM
Compression	9.6:1	10.0:1

Other years 1996 1999 2000 2001 2002 2003 2004 2005 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering35%

City riding40%

Daily riding60%

Touring95%

Two-up85%

Track10%

Best for: It's built for effortless long-distance highway cruising with a classic Harley touring character, not for outright speed or sporty cornering.
Built for: A laid-back, torque-rich V-twin cruiser that rewards relaxed throttle inputs and steady, sweeping roads over aggressive riding.
Not ideal for: This is not the right bike for riders wanting sharp handling, off-road capability, or a lightweight machine for quick city darting.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 705mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2018 Harley-Davidson Road King, with a cramped knee angle of around 75 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Range and running costs

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Units

Currency

Fuel per litre

Riding a year

Based on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.

Full specifications

Engine

Capacity: 1746.0 ccm
Power: 89.0 HP (65.0 kW) @ 5450 RPM
CO2 Emissions: 142 CO2 g/km
EPA Est. Fuel Consumption: 6.05 L/100km (38.9 US mpg)
EPA CO Emissions: 2.7 CO g/km
Torque: 150.0 Nm (15.3 kgf-m) @ 3200 RPM
Engine type: V-Twin, four-stroke
Fuel consumption: 5.60 litres/100 km (17.9 km/l)
Power/weight ratio: 0.2452 HP/kg (dry)
Bore x stroke: 100.0 x 111.1 mm
Compression: 10.0:1
Cooling system: Air
Fuel system: Injection
Starting: Electric
Aspiration: Naturally aspirated
Valves per cylinder: 4
Lubrication system: Dry sump

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Belt
Clutch: Multi-plate with diaphragm spring in oil bath

Performance

Top speed: 165.0 km/h (102.5 mph)

Dimensions & weight

Wheelbase: 1625 mm
Overall length: 2450 mm
Seat height: 705 mm
Dry weight: 363.0 kg
Wet weight: 379.0 kg
Fuel capacity: 22.70 litres
Ground clearance: 135 mm
Oil capacity: 3.80 litres
Carrying capacity: Saddle bags

Chassis & suspension

Front suspension: Telescopic fork
Rear suspension: Twin shocks
Front wheel travel: 117 mm
Rear wheel travel: 76 mm
Rake (fork angle): 26.0°
Trail: 170 mm

Brakes & wheels

Front brakes: Double disc. Optional ABS. 4-piston
Front brakes diameter: 292 mm
Rear brakes: Single disc. Optional ABS. 4-piston
Rear brakes diameter: 292 mm
ABS: Optional
Front tyre: 130/80-B17
Rear tyre: 180/65-B16

Other

Color options: Vivid Black, Twisted Cherry, Silver Fortune, Electric Blue/Silver Fortune, Olive Gold/Black Tempest, Hard Candy Shattered Flake
Comments: Windshield. Cruise control.
Fuel Tank Material: Metal

Specs last verified against published sources: October 2026.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	1996	2004	2011	2016	2018	2022
Capacity	1338 cc	1449 cc	1584 cc	1688 cc	1746 cc	1746 cc
Dry weight	—	329 kg	—	353 kg	363 kg	360 kg
Seat height	749 mm	692 mm	692 mm	715 mm	705 mm	668 mm
Fuel capacity	—	18.9 L	22.7 L	22.7 L	22.7 L	22.7 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

The 2018 Harley-Davidson Road King is a powerful and stylish motorcycle that offers a smooth and comfortable ride. With its classic design and modern features, the Road King is a standout in the Harley-Davidson lineup. The Milwaukee-Eight 107 engine provides ample power for long rides, while the adjustable rear suspension allows for a customizable riding experience. The Road King also includes convenient features such as a one-touch saddlebag latch and cruise control, making it an ideal choice for riders looking for both performance and comfort.

Overall, the 2018 Harley-Davidson Road King is a top-tier motorcycle that delivers exceptional performance and style. Its classic design and modern features make it a standout in the Harley-Davidson lineup, and its powerful engine and comfortable ride make it a great choice for riders looking for a versatile and reliable motorcycle. Whether you're cruising on the open road or navigating city streets, the Road King is sure to impress with its combination of power, comfort, and convenience features.

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