14 August. Friday 2026
Harley-Davidson Softail Fat Boy S - 2017 Specifications and Reviews
The 2017 Harley-Davidson Softail Fat Boy S is an iconic cruiser designed for riders seeking classic American styling with modern performance technology. Known for its aggressive stance, powerful 107 cubic-inch engine, and premium features like ABS brakes and electronic instrumentation, it appeals to experienced cruiser enthusiasts who value heritage combined with contemporary safety and comfort. Its low seat height and manageable weight make it accessible while delivering the authentic Harley character riders crave.
2017
General information | |
| Category | Custom / cruiser |
| Year | 2017 |
| Model | Harley-Davidson Softail Fat Boy S |
Engine and Transmission Specifications | |
| Exhaust system | Black over/under shotgun exhaust with slash-cut mufflers |
| Greenhouse gases | 127.6 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel consumption | 5.50 litres/100 km (18.2 km/l or 42.77 mpg) |
| Driveline | Primary chain, 34/46 ratio |
| Clutch | Multi-plate with diaphragm spring in oil bath |
| Transmission type,final drive | Belt |
| Gearbox | 6-speed |
| Cooling system | Air |
| Fuel system | Injection. Electronic Sequential Port Fuel Injection (ESPFI) |
| Bore x Stroke | 101.6 x 111.3 mm (4.0 x 4.4 inches) |
| Compression | 9.2:1 |
| Torque | 146.00 Nm (14.9 kgf-m or 107.7 ft.lbs) @ 4000 RPM |
| Power | 92.00 HP (67.2 kW) @ 5020 RPM |
| Engine details | Screamin´Eagle® Air-cooled, Twin Cam 110B |
| Engine type | V2, four-stroke |
| | |
Brakes, suspension, Frame and wheels | |
| Wheels | Black, Cast Aluminum |
| Rear brakes | Single disc. 2-piston. ABS. |
| Front brakes | Double disc. 4-piston. ABS. |
| Rear tyre | 200/55-R17 |
| Front tyre | 140/75-R17 |
| Rear Suspension | Twin shocks |
| Front Suspension | Telescopic fork |
| Trail | 147 mm (5.8 inches) |
| Rake (fork angle) | 31.6° |
Physical measures and capacities | |
| Oil capacity | 3.30 litres (0.22 quarts) |
| Fuel capacity | 18.90 litres (4.99 gallons) |
| Wheelbase | 1,630 mm (64.2 inches) |
| Ground clearance | 125 mm (4.9 inches) |
| Overall length | 2,385 mm (93.9 inches) |
| Seat height | 670 mm (26.4 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.2875 HP/kg |
| Weight incl. oil, gas, etc | 333.0 kg (734.1 pounds) |
| Dry weight | 320.0 kg (705.5 pounds) |
| | |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Light | High beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings |
| 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 |
| Starter | Electric |
| Color options | Black Denim, Vivid Black |
Performance Profile & Rider Fit
92 hp
Peak Power
4.8s
0-60 mph
Best For
Track10%
City55%
Cornering30%
Daily Riding60%
Touring45%
Passenger40%
Rider Profile
| Best For | Best suited to riders who already have some experience with heavy, low-slung cruisers, since the fat 200-section rear tire and long wheelbase demand deliberate, confident inputs at low speed. |
| Purpose | Built for boulevard cruising and image-forward riding, delivering strong low-RPM torque for effortless roll-on power rather than outright top-end speed. |
| Rider Fit | The low 670mm seat height makes flat-footing easy for shorter riders, but the 333kg wet weight means slow-speed maneuvers and parking lot U-turns require good upper-body strength and confidence. |
| Character | A muscular, blacked-out custom cruiser that trades agility for presence, thumping V-twin torque, and a classic Fat Boy silhouette. |
| Not Ideal For | Not the right choice for riders wanting a nimble corner-carver, an off-road capable machine, or a lightweight bike for tight, technical city streets. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
Rider Reviews
Add a Comment
Related Motorcycle Specifications
More Harley-Davidson Motorcycles
- Motorcycles in database: 45863
- Technical specifications: 1490298
- Images of motorcycles: 72681
- Videos: 339
- Manufacturers: 501
Please Login or Register if you would like to leave a comment.