The Harley-Davidson FLSTF Fat Boy motorcycle specifications include a 1,338 cc (81.64 cu in) engine, power of 56 hp (40.9 kW) @ 5,000 rpm, a 5-speed gearbox, and a listed weight of 305 kg (672.4 lb).
Key specifications
1999, 2000, 2002, 2003, 2006, 2009, 2011Model years
1,338 ccDisplacement
56 hpPower
97.0 Nm @ 2,350 rpmTorque
305 kgWet weight
680 mmSeat height
15.9 LFuel tank
1,632 mmWheelbase
Model years covered
1999200020022003200620092011
Year-specific specification changes
The 1999 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
Bore × stroke
2000200695.3 x 101.6 mm (3.8 x 4.0 inches)
2009201195.3 x 111.1 mm (3.8 x 4.4 inches)
Compression ratio
20008.9:1
200220038.8:1
20068.9:1
200920119.2:1
Displacement
200020031,449 cc (88.42 cu in)
20061442.2 cc (88.00 cu in)
200920111,584 cc (96.66 cu in)
Dry weight
2000302 kg (665.8 lb)
20022003320 kg (705.5 lb)
2006309.8 kg (683 lb)
2009313 kg (690 lb)
2011314.8 kg (694 lb)
Front brakes
2002Single disc
2006Single disc
20092011Single disc. 4-piston
Front suspension
2009201141.3mm telescopic, “beer can” covers
Front tire
2000MT90-B16
2006MT90-B16
20092011140/75-R17
Fuel system
20092011Injection. Electronic Sequential Port Fuel Injection (ESPFI)
Gearbox
200920116-speed
Rear brakes
2002Single disc
2006Single disc
20092011Single disc. 2-piston
Rear suspension
20092011Hidden, horizontal-mounted, coil-over
Rear tire
2000150/80-B16
2006150/80-B16
20092011200/55-R17
Torque
2000106.0 Nm (10.8 kgf-m or 78.2 ft.lbs) @ 3,500 rpm
2002106.0 Nm (10.8 kgf-m or 78.2 ft.lbs) @ 3,200 rpm
2003106.0 Nm (10.8 kgf-m or 78.2 ft.lbs) @ 3,500 rpm
2006115.3 Nm (11.8 kgf-m or 85.0 ft.lbs) @ 3,000 rpm
2009120.0 Nm (12.2 kgf-m or 88.5 ft.lbs) @ 3,300 rpm
2011127.0 Nm (12.9 kgf-m or 93.7 ft.lbs) @ 3,000 rpm
Wet weight
2000324 kg (714.3 lb)
2006323.9 kg (714 lb)
Wheelbase
20001,638 mm (64.5 inches)
200220031,630 mm (64.2 inches)
20061,638 mm (64.5 inches)
20091,635 mm (64.4 inches)
20111,638 mm (64.5 inches)
Clutch
2006Multi-plate with diaphragm spring in oil bath
200920119-plate, wet
Model information
| Category | Custom / cruiser |
|---|
Engine specifications
| Engine type | V2, four-stroke |
|---|---|
| Displacement | 1,338 cc (81.64 cu in) |
| Power | 56 hp (40.9 kW) @ 5,000 rpm |
| Torque | 97.0 Nm (9.9 kgf-m or 71.5 ft.lbs) @ 2,350 rpm |
| Bore × stroke | 88.8 x 108 mm (3.5 x 4.3 inches) |
| Compression ratio | 8.5:1 |
| Valves per cylinder | 2.0 |
| Cooling system | Air |
| Fuel system | Carburettor |
| Fuel control | Overhead Valves (OHV) |
| Ignition | Single-fire, non-wasted, map-controlled spark ignition |
| Starter | Electric |
| Lubrication | Dry sump, internally mounted, crank driven gerotor pressure and dual scavenge pump. |
| Engine oil | SAE 20W-50 |
| Oil capacity | 3.30 L (3.49 US qt) |
| Spark plugs | NGK BPR5ES-11 |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Belt (final drive) |
| Clutch | Wet 9-plate |
Chassis and suspension
| Front suspension | 41.3 mm |
|---|---|
| Rear suspension | Hidden, horizontal-mounted, coil-over shock |
| Front wheel travel | 129 mm (5.1 inches) |
| Rear wheel travel | 103 mm (4.1 inches) |
| Rake | 32.0° |
| Trail | 147 mm (5.8 inches) |
| Fork tube size | 41 mm (1.6 inches) |
Brakes, wheels and tires
| Front brakes | Single disc. Four-piston calipers. |
|---|---|
| Rear brakes | Single disc. Four-piston calipers. |
| Front tire | 130/90-16 |
| Rear tire | 130/90-16 |
| Front tire pressure | 36 PSI (2.5 Bar or 250 kPa) |
| Rear tire pressure | 36 PSI (2.5 Bar or 250 kPa) |
Dimensions and weight
| Wet weight | 305 kg (672.4 lb) |
|---|---|
| Dry weight | 310 kg (683.4 lb) |
| Seat height | 680 mm (26.8 inches) |
| Overall length | 2,395 mm (94.3 inches) |
| Wheelbase | 1,632 mm (64.3 inches) |
| Ground clearance | 130 mm (5.1 inches) |
Fuel and emissions
| Fuel capacity | 15.90 L (4.20 US gal) |
|---|---|
| Fuel consumption | 5.80 L/100 km (17.2 km/l or 40.56 mpg) |
| Greenhouse gases | 134.6 CO 2 g/km. (CO2 – Carbon dioxide emission) |
Performance
| Top speed | 152.0 km/h (94.4 mph) |
|---|---|
| 0–100 km/h | 7.20 seconds |
| 60–140 km/h | 23.00 seconds |
| Power/weight ratio | 0.1806 hp/kg |
Other specifications
| Brake fluid | DOT 5 Silicone |
|---|
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.