Harley-Davidson FLSTFI Fat Boy vs Harley-Davidson FLSTNI Softail Deluxe (2006)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Harley-Davidson FLSTFI Fat Boystacks up against the Harley-Davidson FLSTNI Softail Deluxe. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Harley-Davidson FLSTFI Fat Boy | Harley-Davidson FLSTNI Softail Deluxe |
|---|---|---|
| Model year | 2006 | 2006 |
| Price | $16,545 | $16,995 |
| Engine | 1442 cc | 1442 cc |
| Torque | 115 Nm | 115 Nm |
| Weight | 310 kg | 314 kg |
| Seat height | — | 25 mm |
| Fuel capacity | 5.0 L | 5.0 L |
| Fuel type | petrol | petrol |
| Transmission | 5-speed | 5-speed |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Single disc |
| Tires | MT90-B16 / 150/80-B16 | MT90-B16 / MU85-B16 |
Harley-Davidson FLSTFI Fat Boy vs Harley-Davidson FLSTNI Softail Deluxe — which should you buy?
Picking between the Harley-Davidson FLSTFI Fat Boy and the Harley-Davidson FLSTNI Softail Deluxe usually comes down to the numbers you care about most. On paper, the Harley-Davidson FLSTFI Fat Boy brings its published horsepower in a 310 kg package, while the Harley-Davidson FLSTNI Softail Deluxe counters with its own power figure at 314 kg. On price, the Harley-Davidson FLSTFI Fat Boy 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: