14 August. Friday 2026
Harley-Davidson FLSTF Fat Boy - 1999 Specifications and Reviews
The 1999 Harley-Davidson FLSTF Fat Boy is a classic cruiser that appeals to riders seeking authentic American motorcycle styling with comfortable, low-slung ergonomics. Known for its iconic wide rear tire and minimalist design, this V-twin powered machine delivers accessible performance with its 1338cc engine producing 56 horsepower and 97 pound-feet of torque.
General information | |
| Category | Custom / cruiser |
| Year | 1999 |
| Model | Harley-Davidson FLSTF Fat Boy |
Engine and Transmission Specifications | |
| Transmission typefinal drive | Belt |
| Gearbox | 5-speed |
| Cooling system | Air |
| Starter | Electric |
| Valves per cylinder | 2 |
| Bore x stroke | 88.8 x 108.0 mm (3.5 x 4.3 inches) |
| Compression | 8.5:1 |
| Torque | 97.00 |
| Power | 56.00 |
| Stroke | 4 |
| Engine type | V2 |
| Capacity: | 1338.00 ccm (81.64 cubic inches) |
Physical measures and capacities | |
| Wheelbase | 1,632 mm (64.3 inches) |
| Seat height | 680 mm (26.8 inches) If adjustable, lowest setting. |
| Front percentage of weight | 46.6 |
| Weight incl. oil, gas, etc | 305.0 kg (672.4 pounds) |
| | |
Harley-Davidson FLSTF Fat Boy dimensions and frame | |
| Rear brakes diameter | 291 mm (11.5 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 291 mm (11.5 inches) |
| Front brakes | Single disc |
| Rear suspension travel | 103 mm (4.1 inches) |
| Front suspension travel | 129 mm (5.1 inches) |
Speed and acceleration | |
| 60-140 km/h (37-87 mph), highest gear | 23.000 seconds |
| 0-100 km/h (0-62 mph) | 7.200 seconds |
| Top speed | 152.0 km/h (94.4 mph) |
| | |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Fuel consumption pr. 10 km (6.2 miles) | 0.58 litres (0.15 gallons) |
| Fuel capacity | 15.90 litres (4.20 gallons) |
Performance Profile & Rider Fit
5.5s
0-60 mph (est.)
94.4 mph
Top Speed
Best For
Track5%
City45%
Cornering30%
Daily Riding55%
Touring45%
Passenger55%
Rider Profile
| Best For | Best suited to riders who already have some experience handling heavy, low-slung cruisers at low speed. |
| Purpose | Built for stylish boulevard cruising and short-to-medium rides where image and torque-driven presence matter more than outright speed. |
| Rider Fit | The low seat height is welcoming for shorter riders, but the substantial dry weight demands confident strength and balance at parking-lot speeds. |
| Character | A muscular, classic American cruiser that delivers strong low-end torque and a commanding presence rather than sharp handling or high-rev thrills. |
| Not Ideal For | Not a fit for riders seeking agile cornering, off-road capability, or lightweight everyday maneuverability. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
Rider Reviews
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