Harley-Davidson Softail Slim S vs Harley-Davidson Softail Fat Boy S (2017)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Harley-Davidson Softail Slim Sstacks up against the Harley-Davidson Softail Fat Boy S. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Harley-Davidson Softail Slim S | Harley-Davidson Softail Fat Boy S |
|---|---|---|
| Model year | 2017 | 2017 |
| Price | $18,999 | $20,199 |
| Engine | 1801 cc | 1801 cc |
| Horsepower | 92 hp | 92 hp |
| Torque | 145 Nm | 146 Nm |
| Weight | 308 kg | 320 kg |
| Seat height | 26 mm | 26 mm |
| Fuel capacity | 5.0 L | 5.0 L |
| Fuel type | petrol | petrol |
| Transmission | 6-speed | 6-speed |
| Front brakes | Single disc. ABS. 4-piston | Double disc. 4-piston. ABS. |
| Rear brakes | Single disc. ABS. 2-piston | Single disc. 2-piston. ABS. |
| Tires | MT90-B16 / MU85-B16 | 140/75-R17 / 200/55-R17 |
Harley-Davidson Softail Slim S vs Harley-Davidson Softail Fat Boy S — which should you buy?
Picking between the Harley-Davidson Softail Slim S and the Harley-Davidson Softail Fat Boy S usually comes down to the numbers you care about most. On paper, the Harley-Davidson Softail Slim S brings 92 hp in a 308 kg package, while the Harley-Davidson Softail Fat Boy S counters with 92 hp at 320 kg. On price, the Harley-Davidson Softail Slim S has the lower MSRP.
Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike: