| Engine | Kawasaki Z650 | Kawasaki Ninja 400 |
|---|---|---|
| Displacement | 649 cc | 399 cc |
| Max power | 65 hp (@6 500 RPM) | 49 hp (@10 000 RPM) |
| Max torque | 50 lb ft (@8 000 RPM) | 28 lb ft (@8 000 RPM) |
| Redline | 9 500 RPM | 9 500 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Inline-2 | DOHC Inline-2 |
| Compression | 10.80:1 | 11.60:1 |
| Oil capacity | 1.99 quart | |
| Oil type | 10W40 | |
| Spark plug type | NGK CR9EIA-9 | |
| Cooling | Liquid | Liquid |
| Valves | 8 | 8 |
| Bore | 83.0 mm | 70.0 mm |
| Stroke | 60.0 mm | 51.8 mm |
| Throttle bore | 36.0 mm | 32.0 mm |
| Weight to power | 6.34 lbs/hp | 7.47 lbs/hp |
| Power to weight | 394 hp/2500lbs | 334 hp/2500lbs |
| Battery type | 12V 8.6Ah |
| Gearbox | Kawasaki Z650 | Kawasaki Ninja 400 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Slipper |
| Drive | Chain | Chain |
| Chain type | RK 520 | |
| Gears count | 6 | 6 |
| Primary ratio | 2.095 | 2.219 |
| Final drive | 3.067 | 2.929 |
| 1. gear | 2.438 (44 mph) | 2.929 (36 mph) |
| 2. gear | 1.714 (63 mph) | 2.056 (51 mph) |
| 3. gear | 1.333 (81 mph) | 1.619 (65 mph) |
| 4. gear | 1.111 (97 mph) | 1.333 (78 mph) |
| 5. gear | 0.966 (112 mph) | 1.154 (91 mph) |
| 6. gear | 0.852 (127 mph) | 1.037 (101 mph) |
| Chasis | Kawasaki Z650 | Kawasaki Ninja 400 |
|---|---|---|
| Frame type | Trellis, high tensile steel | Steel trellis frame |
| Front susp. | 41mm Telescopic fork, 4.88 in travel | 41mm fork, 4.72 in travel |
| Rear susp. | Monoshock | Monoshock, 5.12 in travel |