The Harley-Davidson FLSTF Softail Fat Boy motorcycle specifications include a 1573.3 cc (96.00 cu in) engine, a 6-speed gearbox, and a listed weight of 323.9 kg (714 lb).
Key specifications
2007, 2008, 2010, 2012Model years
1,573 ccDisplacement
121.8 Nm @ 2,750 rpmTorque
323.9 kgWet weight
698 mmSeat height
18.9 LFuel tank
1,638 mmWheelbase
130 mmGround clearance
Model years covered
2007200820102012
Year-specific specification changes
The 2007 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
Bore × stroke
201095.3 x 111.1 mm (3.8 x 4.4 inches)
201298.4 x 111.3 mm (3.9 x 4.4 inches)
Displacement
20101,584 cc (96.66 cu in)
20121,688 cc (103.00 cu in)
Front brakes
2008Single disc. 4-piston calipers
2010Single disc. 4-piston
2012Single disc. 4-piston caliper. Optional ABS.
Front suspension
2010201241.3mm telescopic, “beer can” covers
Fuel system
2008Injection. ESPFI
20102012Injection. Electronic Sequential Port Fuel Injection (ESPFI)
Rear brakes
2008Single disc. 2-piston torque-free calipers
2010Single disc. 2-piston
2012Single disc. 2-piston caliper. Optional ABS.
Rear suspension
20102012Hidden, horizontal-mounted, coil-over
Torque
2008120.0 Nm (12.2 kgf-m or 88.5 ft.lbs) @ 3,300 rpm
2010125.0 Nm (12.7 kgf-m or 92.2 ft.lbs) @ 3,500 rpm
2012133.8 Nm (13.6 kgf-m or 98.7 ft.lbs) @ 3,000 rpm
Wheelbase
20101,635 mm (64.4 inches)
Exhaust system
2008Chrome, over/under shotgun exhaust w/ dual mufflers
20102012Chrome, over/under shotgun exhaust with dual mufflers
Fuel capacity
201019.70 L (5.20 US gal)
201218.93 L (5.00 US gal)
Fuel consumption
20084.35 L/100 km (23.0 km/l or 54.07 mpg)
20125.60 L/100 km (17.9 km/l or 42.00 mpg)
Fuel control
2010Overhead Valves (OHV)
Greenhouse gases
2008100.9 CO 2 g/km. (CO2 – Carbon dioxide emission)
2012129.9 CO 2 g/km. (CO2 – Carbon dioxide emission)
Overall length
20102,396 mm (94.3 inches)
Seat height
2010690 mm (27.2 inches)
2012635 mm (25.0 inches)
How the Harley-Davidson FLSTF 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.
Displacement1,573 cc
Low 165 ccAverage 1,275 ccHigh 1,868 cc
About 23% higher than the Harley-Davidson database average. Around the 75th percentile across Harley-Davidson models.
Wet weight323.9 kg
Low 183 kgAverage 312.9 kgHigh 507 kg
Very close to the Harley-Davidson database average. Around the 61st percentile across Harley-Davidson models.
Seat height698 mm
Low 622 mmAverage 689 mmHigh 780 mm
Very close to the Harley-Davidson database average. Around the 68th percentile across Harley-Davidson models.
Fuel capacity18.9 L
Low 7.9 LAverage 17 LHigh 22.7 L
About 11% larger than the Harley-Davidson database average. Around the 63rd percentile across Harley-Davidson models.
This model Harley-Davidson database average
Mechanical overview
Engine layout snapshot
V2, four-stroke • 1,573 cc • Air cooled
Chassis snapshot
Wheelbase 1,638 mmSeat 698 mmClearance 130 mm
6-speed • Belt (final drive) • 140/75-R17 front / 200/55-R17 rear
Additional useful specifications
| Front tire size |
140/75-R17 |
| Rear tire size |
200/55-R17 |
| Estimated theoretical fuel range |
427 km |
| Bore/stroke ratio |
0.86:1 (Undersquare) |
Model information
| Category |
Custom / cruiser |
Engine specifications
| Engine type |
V2, four-stroke |
| Displacement |
1573.3 cc (96.00 cu in) |
| Torque |
121.8 Nm (12.4 kgf-m or 89.8 ft.lbs) @ 2,750 rpm |
| Bore × stroke |
95.3 x 111.3 mm (3.8 x 4.4 inches) |
| Compression ratio |
9.2:1 |
| Cooling system |
Air |
| Fuel system |
Injection. Electronic Sequential Port Fuel Injection |
| Fuel control |
Double Overhead Cams/Twin Cam (DOHC) |
| Starter |
Electric |
Transmission and drivetrain
| Gearbox |
6-speed |
| Final drive |
Belt (final drive) |
| Clutch |
Multi-plate with diaphragm spring in oil bath |
Chassis and suspension
| Front suspension |
Telescopic fork, 41 mm |
| Rear suspension |
Hidden shock |
| Rake |
31.6° |
| Trail |
147 mm (5.8 inches) |
Brakes, wheels and tires
| Front brakes |
Single disc. 4-piston caliper |
| Rear brakes |
Single disc. 4-piston caliper |
| Front tire |
140/75-R17 |
| Rear tire |
200/55-R17 |
Dimensions and weight
| Wet weight |
323.9 kg (714 lb) |
| Dry weight |
314.8 kg (694 lb) |
| Seat height |
698 mm (27.5 inches) |
| Overall length |
2,395 mm (94.3 inches) |
| Wheelbase |
1,638 mm (64.5 inches) |
| Ground clearance |
130 mm (5.1 inches) |
Fuel and emissions
| Fuel capacity |
18.92 L (5.00 US gal) |
| Fuel consumption |
4.43 L/100 km (22.6 km/l or 53.10 mpg) |
| Greenhouse gases |
102.8 CO 2 g/km. (CO2 – Carbon dioxide emission) |
Other specifications
| Color options |
Vivid black, black cherry pearl, black pearl, fire red pearl, deep cobalt pearl, suede blue pearl (new), olive pearl (new), Pacific blue pearl (new), pewter pearl (new), yellow pearl, white gold pearl (new), two-tone burgundy and crème/gold pearl (custo |
| Exhaust system |
Chrome, over/under shotgun duals |
| Price as new |
US$ 17095. MSRP depends on country, taxes, accessories, etc. |
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.