| Engine | KTM 390 Duke | Aprilia RS660 |
|---|---|---|
| Displacement | 373 cc | 660 cc |
| Max power | 43 hp (@8 600 RPM) | 100 hp (@10 500 RPM) |
| Max torque | 25 lb ft (@6 800 RPM) | 49 lb ft (@8 500 RPM) |
| Redline | 10 500 RPM | 12 000 RPM |
| Idling speed | 1 650 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Single | DOHC Inline-2 |
| Compression | 12.90:1 | 13.50:1 |
| Oil type | 15W50 | |
| Spark plug type | BOSCH VR 5 NE, BOSCH VR 5 NEU | |
| Cooling | Liquid | Liquid |
| Valves | 4 | 8 |
| Bore | 89.0 mm | 81.0 mm |
| Stroke | 60.0 mm | 63.0 mm |
| Throttle bore | 48.0 mm | |
| Weight to power | 8.05 lbs/hp | 4.03 lbs/hp |
| Power to weight | 310 hp/2500lbs | 619 hp/2500lbs |
| Gearbox | KTM 390 Duke | Aprilia RS660 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | X-Ring 5/8 x 1/4" | |
| Gears count | 6 | 0 |
| Primary ratio | 2.667 | |
| Final drive | 3.0 | 2.52 |
| 1. gear | 2.667 (35 mph) | |
| 2. gear | 1.857 (50 mph) | |
| 3. gear | 1.421 (66 mph) | |
| 4. gear | 1.143 (82 mph) | |
| 5. gear | 0.956 (98 mph) | |
| 6. gear | 0.84 (112 mph) |
| Chasis | KTM 390 Duke | Aprilia RS660 |
|---|---|---|
| Frame type | Steel trellis frame | Double beam aluminum |
| Front susp. | USD 43mm, 5.91 in travel | 41mm KYB USD, 4.72 in travel |
| Rear susp. | Monoshock, 5.91 in travel | Monoshock, 5.12 in travel |