Cruisers

2018Harley-Davidson Softail Street Bob Dark Custom

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The 2018 Harley-Davidson Softail Street Bob Dark Custom is a stripped-down cruiser built for riders seeking authentic, minimalist style with classic Harley character. Its low 680mm seat height, manageable 304kg curb weight, and accessible 48-cubic-inch engine make it ideal for both experienced enthusiasts and newer riders wanting genuine cruiser heritage. Known for its aggressive dark aesthetic and aggressive stance, it delivers a raw, uncompromised riding experience rooted in Harley tradition.

Capacity: 1584.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 6-speed
Dry weight: 289.0 kg
Seat height: 680 mm
Power: Not on record
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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering35%

City riding60%

Daily riding60%

Touring35%

Two-up30%

Track10%

Best for: Built for laid-back street cruising and boulevard presence rather than speed or long-distance touring.
Built for: A stripped-down, blacked-out bobber-styled cruiser that trades on attitude, torque-driven low-end pull, and classic V-twin sound over outright performance.
Not ideal for: Not a good fit for riders wanting sharp cornering agility, off-road capability, or a bike optimized for serious two-up touring comfort.

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 680mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2018 Harley-Davidson Softail Street Bob Dark Custom, 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 →

Full specifications

Engine

Capacity: 1584.0 ccm
CO2 Emissions: 130 CO2 g/km
Torque: 120.0 Nm (12.2 kgf-m) @ 3250 RPM
Engine type: V-Twin, four-stroke
Fuel consumption: 5.60 litres/100 km (17.9 km/l)
Bore x stroke: 98.4 x 111.1 mm
Compression: 9.6:1
Cooling system: Air
Fuel system: Injection
Starting: Electric
Power: Not on record - add it

Transmission

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

Dimensions & weight

Wheelbase: 1630 mm
Overall length: 2395 mm
Seat height: 680 mm
Dry weight: 289.0 kg
Wet weight: 304.0 kg
Fuel capacity: 13.20 litres
Ground clearance: 120 mm
Oil capacity: 4.70 litres

Chassis & suspension

Front suspension: Telescopic fork
Rear suspension: Twin shocks
Rake (fork angle): 29.0°
Trail: 119 mm

Brakes & wheels

Front brakes: Single disc. Optional ABS. 4-piston
Rear brakes: Single disc. Optional ABS. 2-piston
ABS: Optional
Front tyre: 100/90-B19
Rear tyre: 150/80-B16

Other

Color options: Vivid Black, Black Denim, Olive Gold, Red Iron Denim, Hard Candy Hot Rod Red Flake, Charcoal Denim/Black Denim

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

Rider Reviews

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MotorcycleDB Review

The 2018 Harley-Davidson Softail Street Bob Dark Custom is a stunning example of classic American motorcycle design. The dark custom style gives this bike a sleek and aggressive look, while the powerful 107 cubic inch Milwaukee-Eight engine delivers a thrilling ride. The minimalist design and blacked-out finish make for a striking appearance on the road, and the comfortable seating position and responsive handling make it a joy to ride.

Overall, the 2018 Harley-Davidson Softail Street Bob Dark Custom is a stylish and powerful motorcycle that is sure to turn heads wherever you go. Whether you're a seasoned rider or new to the Harley-Davidson family, this bike offers a thrilling experience that will leave you wanting more. With its combination of classic design, modern performance, and signature Harley-Davidson quality, the Street Bob Dark Custom is a must-have for any motorcycle enthusiast.