| Engine | KTM 390 Duke | KTM 790 DUKE |
|---|---|---|
| Engine code | LC8e | |
| Displacement | 373 cc | 799 cc |
| Max power | 43 hp (@8 600 RPM) | 105 hp (@9 000 RPM) |
| Max torque | 25 lb ft (@6 800 RPM) | 62 lb ft (@8 000 RPM) |
| Redline | 10 500 RPM | 10 000 RPM |
| Idling speed | 1 650 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Single | DOHC Inline-2 |
| Compression | 12.90:1 | 12.70:1 |
| Oil type | 15W50 | |
| Spark plug type | BOSCH VR 5 NE, BOSCH VR 5 NEU | |
| Cooling | Liquid | Liquid |
| Valves | 4 | 8 |
| Bore | 89.0 mm | 88.0 mm |
| Stroke | 60.0 mm | 65.7 mm |
| Throttle bore | 42.0 mm | |
| Weight to power | 8.05 lbs/hp | 3.97 lbs/hp |
| Power to weight | 310 hp/2500lbs | 629 hp/2500lbs |
| Gearbox | KTM 390 Duke | KTM 790 DUKE |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Slipper |
| Drive | Chain | Chain |
| Chain type | X-Ring 5/8 x 1/4" | 520 X-Ring |
| Gears count | 6 | 6 |
| Primary ratio | 2.667 | 1.923 |
| Final drive | 3.0 | 2.75 |
| 1. gear | 2.667 (35 mph) | 2.846 (49 mph) |
| 2. gear | 1.857 (50 mph) | 2.0 (70 mph) |
| 3. gear | 1.421 (66 mph) | 1.55 (90 mph) |
| 4. gear | 1.143 (82 mph) | 1.272 (109 mph) |
| 5. gear | 0.956 (98 mph) | 1.083 (129 mph) |
| 6. gear | 0.84 (112 mph) | 0.956 (146 mph) |
| Chasis | KTM 390 Duke | KTM 790 DUKE |
|---|---|---|
| Frame type | Steel trellis frame | CRMO steel frame, stressed engine |
| Front susp. | USD 43mm, 5.91 in travel | WP 43mm USD, 5.51 in travel |
| Rear susp. | Monoshock, 5.91 in travel | WP shock absorber, 5.91 in travel |