Cruisers
2021Harley-Davidson Street Bob
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The 2021 Harley-Davidson Street Bob is a stripped-back Softail cruiser with mini-ape handlebars and a bobber look. Its air-cooled Milwaukee-Eight V-twin drives through a six-speed gearbox and belt drive, with ABS as an option. A low 680 mm seat, 297 kg wet weight and 13.2-litre tank keep it lean and simple.
- Capacity
- 1746.0 ccm
- Engine
- V-Twin, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 286.0 kg
- Seat height
- 680 mm
- Power
- 86.0 HP (62.8 kW) @ 5020 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for stylish, torque-driven cruising around town and on weekend backroads rather than outright speed or long-distance touring.
- Built for
- A muscular, blacked-out bobber with a big-inch V-twin that delivers strong low-end torque and classic Harley presence with every throttle roll-on.
- Not ideal for
- Not the right choice for riders wanting sharp cornering agility, off-road capability, or a bike optimized for covering long highway miles in 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?
Worked out in your browser - nothing is sent to usRange and running costs
Worked out in your browser - nothing is sent to usBased 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.
Engine
- Capacity
- 1746.0 ccm
- Power
- 86.0 HP (62.8 kW) @ 5020 RPM
- CO2 Emissions
- 116 CO2 g/km
- Torque
- 149.2 Nm (15.2 kgf-m) @ 3000 RPM
- Engine type
- V-Twin, four-stroke
- Fuel consumption
- 5.00 litres/100 km (20.0 km/l)
- Power/weight ratio
- 0.3007 HP/kg (dry)
- Bore x stroke
- 100.0 x 111.1 mm
- Compression
- 10.0:1
- Cooling system
- Air
- Fuel system
- Injection
- Starting
- Electric
- Spark plugs
- NGK CR9E, NGK CR9EIX
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
- 2320 mm
- Overall width
- 925 mm
- Seat height
- 680 mm
- Dry weight
- 286.0 kg
- Wet weight
- 297.0 kg
- Fuel capacity
- 13.20 litres
- Ground clearance
- 125 mm
- Oil capacity
- 4.70 litres
Chassis & suspension
- Front suspension
- Telescopic fork
- Rear suspension
- Twin shocks
- Rake (fork angle)
- 30.0°
- Trail
- 158 mm
- Fork tube size
- 49 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
- Brake fluid
- DOT 4
Other
- Color options
- Vivid Black, River Rock Grey, Spruce, Barracuda Silver Denim, Billiard Red/Vivid Black Wicked Red Denim, Industrial Grey Denim, Billiard Blue, Rugged Gold Denim, Wicked Red/ Twisted Cherry
Specs last verified against published sources: .
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 | 2020 | 2021 | 2022 | 2023 | 2025 | 2026 |
|---|---|---|---|---|---|---|
| Capacity | 1746 cc | 1746 cc | 1746 cc | 1746 cc | 1923 cc | 1923 cc |
| Dry weight | 286 kg | 286 kg | 286 kg | 286 kg | 286 kg | 286 kg |
| Seat height | 680 mm | 680 mm | 680 mm | 680 mm | 655 mm | 655 mm |
| Fuel capacity | 13.2 L | 13.2 L | 13.2 L | 13.2 L | 13.2 L | 13.2 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Harley-Davidson Street Bob?
The 2021 Harley-Davidson Street Bob has a Capacity of 1746.0 ccm (106.55 cubic inches).
What engine power does the Harley-Davidson Street Bob have?
The 2021 Harley-Davidson Street Bob has a Power of 86.0 HP (62.8 kW) @ 5020 RPM.
How many gears does the Harley-Davidson Street Bob have?
The 2021 Harley-Davidson Street Bob has a Gearbox of 6-speed.
What is the torque of the Harley-Davidson Street Bob?
The 2021 Harley-Davidson Street Bob has a Torque of 149.2 Nm (15.2 kgf-m or 110.0 ft.lbs) @ 3000 RPM.
How much does the Harley-Davidson Street Bob weigh?
The 2021 Harley-Davidson Street Bob has a Dry weight of 286.0 kg (630.5 pounds).
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