Cruisers

1984Harley-Davidson FXST 1340 Softail

19 fields on record

The 1984 Harley-Davidson FXST 1340 Softail is a classic custom cruiser that appeals to riders seeking authentic American motorcycle heritage and style. Known for its distinctive hidden rear suspension design combined with traditional hardtail aesthetics, it delivers a smooth 1337cc V-twin ride. Best suited for cruiser enthusiasts who value iconic design and manageable performance over raw power.

Capacity: 1337.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 4-speed
Wet weight: 298.0 kg
Seat height: Not on record
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Power: 64.0 HP (47.1 kW) @ 5200 RPM

⇄ Compare with another bike All model years

Other years 1983 1984 1985 1986 1987 1988 1989 1990 1991

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering30%

City riding45%

Daily riding55%

Touring55%

Two-up55%

Track5%

Best for: Built for relaxed, low-rpm cruising and boulevard presence rather than speed, agility, or long-distance efficiency.
Built for: A classic torque-driven V-twin cruiser with a laid-back, thumping character that rewards smooth, unhurried riding over aggressive throttle inputs.
Not ideal for: Not a good fit for riders seeking sharp cornering, quick acceleration, or any kind of 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: 64.0 HP (47.1 kW) @ 5200 RPM
Engine type: V-Twin, four-stroke
Power/weight ratio: 0.2148 HP/kg
Bore x stroke: 88.8 x 108.0 mm
Compression: 8.5:1
Cooling system: Air
Valves per cylinder: 2
Torque: Not on record - add it

Transmission

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

Performance

Top speed: 174.0 km/h (108.1 mph)

Dimensions & weight

Wet weight: 298.0 kg
Fuel capacity: 19.00 litres
Seat height: Not on record - add it
Dry weight: Not on record - add it

Brakes & wheels

Front brakes: Single disc
Rear brakes: Single disc
Front tyre: NH 90-21
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	1983	1984	1985	1987	1989	1991
Capacity	1337.00 ccm (81.58 cubic inches)	1337.00 ccm (81.58 cubic inches)	1337.00 ccm (81.58 cubic inches)	1337.00 ccm (81.58 cubic inches)	1337.00 ccm (81.58 cubic inches)	1337.00 ccm (81.58 cubic inches)
Fuel capacity	19.00 litres (5.02 gallons)	19.00 litres (5.02 gallons)	19.00 litres (5.02 gallons)	19.00 litres (5.02 gallons)	20.00 litres (5.28 gallons)	20.00 litres (5.28 gallons)