The Harley-Davidson Softail Fat Boy S motorcycle specifications include a 1,801 cc (109.90 cu in) engine, power of 92 hp (67.2 kW) @ 5,020 rpm, a 6-speed gearbox, and a listed weight of 333 kg (734.1 lb).
Key specifications
How the Harley-Davidson Softail Fat Boy S 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 44% higher than the Harley-Davidson database average. Around the 90th percentile across Harley-Davidson models.
About 41% higher than the Harley-Davidson database average. Around the 93rd percentile across Harley-Davidson models.
About 6% heavier than the Harley-Davidson database average. Around the 66th percentile across Harley-Davidson models.
Very close to the Harley-Davidson database average. Around the 34th 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.
92 hp — more powerful than about 90% of Harley-Davidson models with power data.
1,801 cc — larger displacement than about 93% of Harley-Davidson models.
333 kg — heavier than about 66% of Harley-Davidson models, or lighter than about 34%.
670 mm — taller than about 34% 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.
2,385
2,376
Close to average.
1,630
1,599
Close to average.
670
689
Close to average.
125
128
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | 140/75-R17 |
|---|---|
| Rear tire size | 200/55-R17 |
| Engine oil capacity | 3.30 L (3.49 US qt) |
| Estimated theoretical fuel range | 344 km |
| Power-to-weight ratio | 0.276 hp/kg |
| Power-to-weight | 276.3 hp/tonne |
| Specific power | 51.1 hp/L |
| Bore/stroke ratio | 0.91:1 (Undersquare) |
Model information
| Year released | 2017 |
|---|
Engine specifications
| Engine type | V2, four-stroke |
|---|---|
| Displacement | 1,801 cc (109.90 cu in) |
| Power | 92 hp (67.2 kW) @ 5,020 rpm |
| Torque | 146.0 Nm (14.9 kgf-m or 107.7 ft.lbs) @ 4,000 rpm |
| Bore × stroke | 101.6 x 111.3 mm (4.0 x 4.4 inches) |
| Compression ratio | 9.2:1 |
| Cooling system | Air |
| Fuel system | Injection. Electronic Sequential Port Fuel Injection (ESPFI) |
| Starter | Electric |
| Oil capacity | 3.30 L (3.49 US qt) |
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 |
|---|---|
| Rear suspension | Twin shocks |
| Rake | 31.6° |
| Trail | 147 mm (5.8 inches) |
Brakes, wheels and tires
| Front brakes | Double disc. 4-piston. ABS. |
|---|---|
| Rear brakes | Single disc. 2-piston. ABS. |
| Front tire | 140/75-R17 |
| Rear tire | 200/55-R17 |
| Wheels | Black, Cast Aluminum |
Dimensions and weight
| Wet weight | 333 kg (734.1 lb) |
|---|---|
| Dry weight | 320 kg (705.5 lb) |
| Seat height | 670 mm (26.4 inches) |
| Overall length | 2,385 mm (93.9 inches) |
| Wheelbase | 1,630 mm (64.2 inches) |
| Ground clearance | 125 mm (4.9 inches) |
Fuel and emissions
| Fuel capacity | 18.90 L (4.99 US gal) |
|---|---|
| Fuel consumption | 5.50 L/100 km (18.2 km/l or 42.77 mpg) |
| Greenhouse gases | 127.6 CO 2 g/km. (CO2 – Carbon dioxide emission) |
Performance
| Power/weight ratio | 0.2875 hp/kg |
|---|
Electrical and instruments
| Instruments | Tank-mounted electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, rpm/gear display, fuel gauge with low fuel warning light and countdown feature, low oil pressure indicator light, engine diagnostics readout, LED indicator lights, 6-speed indicator light |
|---|---|
| Lights | High beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings |
Other specifications
| Color options | Black Denim, Vivid Black |
|---|---|
| Exhaust system | Black over/under shotgun exhaust with slash-cut mufflers |
| Price as new | US$ 20199. Euro 23135. 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.