Cruisers
1984Harley-Davidson FXEF 1340 Fat Bob
19 fields on record
The 1984 Harley-Davidson FXEF 1340 Fat Bob is a classic cruiser-style motorcycle powered by a 1337cc air-cooled V-twin engine producing 64 horsepower. Known for its low-slung styling, wide rear fender, and comfortable ergonomics, it appeals to riders seeking authentic Harley character with manageable performance. The Fat Bob remains celebrated for its distinctive aesthetic and reliable four-speed transmission.
- Capacity
- 1337.0 ccm
- Engine
- V-Twin
- Gearbox
- 4-speed
- Wet weight
- 272.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 64.0 HP (47.1 kW) @ 5000 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for relaxed, torque-rich cruising and boulevard presence rather than outright speed or sport performance.
- Built for
- A classic air-cooled Harley V-twin with a raw, mechanical feel, strong low-end torque, and unmistakable big-twin character.
- Not ideal for
- Not a good fit for riders seeking modern sport handling, high top speed, or off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 1337.0 ccm
- Power
- 64.0 HP (47.1 kW) @ 5000 RPM
- Engine type
- V-Twin
- Power/weight ratio
- 0.2353 HP/kg (wet)
- 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
- 155.0 km/h (96.3 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Single 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 | 1984 | 1985 |
|---|---|---|
| Capacity | 1337 cc | 1337 cc |
| Fuel capacity | 13 L | 13 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 FXEF 1340 Fat Bob?
The 1984 Harley-Davidson FXEF 1340 Fat Bob has a Capacity of 1337.0 ccm (81.59 cubic inches).
What engine power does the Harley-Davidson FXEF 1340 Fat Bob have?
The 1984 Harley-Davidson FXEF 1340 Fat Bob has a Power of 64.0 HP (47.1 kW) @ 5000 RPM.
How many gears does the Harley-Davidson FXEF 1340 Fat Bob have?
The 1984 Harley-Davidson FXEF 1340 Fat Bob has a Gearbox of 4-speed.
How much does the Harley-Davidson FXEF 1340 Fat Bob weigh?
The 1984 Harley-Davidson FXEF 1340 Fat Bob has a Wet weight of 272.0 kg (599.7 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Similar bikes
Same category, weighted similarity
More Harley-Davidson Motorcycles
1986 Harley-Davidson FLTC 1340 (with Sidecar)
2026 Harley-Davidson Street Bob 117
2026 Harley-Davidson Sportster S
2026 Harley-Davidson Tri Glide Ultra
2025 Harley-Davidson CVO Street Glide
2026 Harley-Davidson Low Rider ST
1987 Harley-Davidson FLHTC 1340 (with Sidecar)
2026 Harley-Davidson Road King Special
Please log in or register if you'd like to leave a comment.