Harley-Davidson X350 vs KTM 390 Duke (2026)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Harley-Davidson X350stacks up against the KTM 390 Duke. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Harley-Davidson X350 | KTM 390 Duke |
|---|---|---|
| Model year | 2026 | 2026 |
| Price | $5,500 | $5,999 |
| Engine | 353 cc | 373 cc |
| Horsepower | 36 hp | 44 hp |
| Torque | 31 Nm | 37 Nm |
| Weight | 195 kg | 150 kg |
| Seat height | 780 mm | 830 mm |
| Fuel capacity | 13.5 L | 13.4 L |
| Fuel type | petrol | petrol |
| Transmission | 6-speed manual | 6-speed manual |
| Front brakes | Single 320mm disc | Single 320mm disc |
| Rear brakes | Single 240mm disc | Single 230mm disc |
| Tires | 110/70-17 front, 150/60-17 rear | 110/70-17 front, 150/60-17 rear |
Harley-Davidson X350 vs KTM 390 Duke — which should you buy?
Picking between the Harley-Davidson X350 and the KTM 390 Duke usually comes down to the numbers you care about most. On paper, the Harley-Davidson X350 brings 36 hp in a 195 kg package, while the KTM 390 Duke counters with 44 hp at 150 kg. On price, the Harley-Davidson X350 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: