The Harley-Davidson FLSTFI Softail Fat Boy motorcycle specifications include a 1,449 cc (88.42 cu in) engine, a 5-speed gearbox, and a listed weight of 307 kg (676.8 lb).
Key specifications
How the Harley-Davidson FLSTFI Softail Fat Boy compares
This compares the motorcycle with all Harley-Davidson models in this specifications database. The blue marker is this model and the grey line is the Harley-Davidson database average.
About 14% higher than the Harley-Davidson database average. Around the 69th percentile across Harley-Davidson models.
About 6% lower than the Harley-Davidson database average. Around the 7th percentile across Harley-Davidson models.
About 11% larger than the Harley-Davidson database average. Around the 58th percentile across Harley-Davidson models.
Harley-Davidson database percentile rankings
Percentiles show where this motorcycle sits across the Harley-Davidson specifications database. They are descriptive database rankings, not performance ratings.
1,449 cc — larger displacement than about 69% of Harley-Davidson models.
645 mm — taller than about 7% of Harley-Davidson models.
18.9 L — larger than about 58% of Harley-Davidson fuel tanks in this database.
Dimensions compared with Harley-Davidson average
Each measurement is compared with the average value across Harley-Davidson models where that dimension is available.
2,396
2,376
Close to average.
1,630
1,599
Close to average.
645
689
6% below average.
130
128
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | MH90-B16 |
|---|---|
| Rear tire size | 150/80-16 |
| Rear tire width | 150 mm |
| Rear tire aspect ratio | 80% |
| Rear rim diameter | 16 in |
| Bore/stroke ratio | 0.94:1 (Undersquare) |
Model information
| Year released | 2005 |
|---|
Engine specifications
| Engine type | V2, four-stroke |
|---|---|
| Displacement | 1,449 cc (88.42 cu in) |
| Torque | 101.0 Nm (10.3 kgf-m or 74.5 ft.lbs) @ 3,800 rpm |
| Bore × stroke | 95.3 x 101.6 mm (3.8 x 4.0 inches) |
| Compression ratio | 8.8:1 |
| Cooling system | Air |
| Fuel system | Injection. Electronic Sequential Port Fuel Injection (ESPFI) |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Belt (final drive) |
| Clutch | Multi-plate clutch with diaphragm spring in oil bath |
Chassis and suspension
| Rake | 32.0° |
|---|
Brakes, wheels and tires
| Front brakes | Double disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | MH90-B16 |
| Rear tire | 150/80-16 |
Dimensions and weight
| Dry weight | 307 kg (676.8 lb) |
|---|---|
| Seat height | 645 mm (25.4 inches) |
| Overall length | 2,396 mm (94.3 inches) |
| Wheelbase | 1,630 mm (64.2 inches) |
| Ground clearance | 130 mm (5.1 inches) |
Fuel and emissions
| Fuel capacity | 18.90 L (4.99 US gal) |
|---|
Other specifications
| Color options | Vivid black, brilliant silver pearl, sierra red pearl, smokey gold pearl, black pearl, lava red sunglo, glacier white pearl, rich sunglo blue, two-tone chopper blue pearl and brilliant silver pearl, two-tone black cherry pearl and black pearl, two-tone si |
|---|---|
| Exhaust system | Over/under shotgun with shorty duals |
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Harley-Davidson models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Harley-Davidson information before relying on them. Visit the official Harley-Davidson website.