Cruisers

1981Harley-Davidson FXB 1340 Sturgis

19 fields on record

The 1981 Harley-Davidson FXB 1340 Sturgis is a classic cruiser built for riders seeking authentic American motorcycle heritage. Its air-cooled 1340cc V-twin engine delivers straightforward power with distinctive character, while the low-slung profile and belt drive epitomize the cruiser philosophy. Best known for its connection to the legendary Sturgis Motorcycle Rally, this bike suits traditionalists valuing style and simplicity over performance.

Capacity: 1337.0 ccm
Engine: V -Twin twin, four-stroke
Gearbox: 4-speed
Wet weight: 278.0 kg
Seat height: Not on record
Know it? Add it →
Power: 67.0 HP

⇄ Compare with another bike All model years

What’s new for the 1981 Harley-Davidson FXB 1340 Sturgis

vs the 1980

Spec	1980	1981
Engine capacity	1337.00 ccm (81.58 cubic inches)	1337.0 ccm (81.59 cubic inches)
Power	67.00 HP	67.0 HP
Fuel capacity	15.50 litres (4.10 gallons)	15.50 litres (4.09 US gallons)

Other years 1980 1981 1982

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering35%

City riding45%

Daily riding50%

Touring55%

Two-up55%

Track10%

Best for: Built for laid-back boulevard cruising and classic Harley styling rather than outright speed or agility.
Built for: A characterful, torque-heavy V-twin cruiser with belt-drive smoothness and vintage Harley soul, emphasizing feel and presence over performance.
Not ideal for: Not a fit for riders seeking sharp cornering, high-speed touring comfort, or any off-road capability.

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

Full specifications

Engine

Capacity: 1337.0 ccm
Power: 67.0 HP
Engine type: V -Twin twin, four-stroke
Power/weight ratio: 0.2410 HP/kg
Bore x stroke: 88.8 x 108.0 mm
Compression: 7.4:1
Cooling system: Air
Valves per cylinder: 2
Torque: Not on record - add it

Transmission

Gearbox: 4-speed
Transmission type: Manual
Final drive: Belt

Performance

Top speed: 170.0 km/h (105.6 mph)

Dimensions & weight

Wet weight: 278.0 kg
Fuel capacity: 15.50 litres
Seat height: Not on record - add it
Dry weight: Not on record - add it

Brakes & wheels

Front brakes: Dual disc
Rear brakes: Single disc
Front tyre: MJ 90-19
Rear tyre: MT 90-16

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	1980	1981	1982
Capacity	1337.00 ccm (81.58 cubic inches)	1337.00 ccm (81.58 cubic inches)	1337.00 ccm (81.58 cubic inches)
Fuel capacity	15.50 litres (4.10 gallons)	15.50 litres (4.10 gallons)	15.50 litres (4.10 gallons)