| Engine | Yamaha FZ600 | Kawasaki Z650 |
|---|---|---|
| Displacement | 599 cc | 649 cc |
| Max power | 95 hp (@11 500 RPM) | 65 hp (@6 500 RPM) |
| Max torque | 61 Nm (@9 500 RPM) | 68 Nm (@8 000 RPM) |
| Redline | 13 000 RPM | 9 500 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Carburetor | Fuel Injection |
| Layout | DOHC Inline-4 | DOHC Inline-2 |
| Compression | 12.00:1 | 10.80:1 |
| Oil capacity | 3.00 litre | 2.10 litre |
| Oil type | 10W40 | 10W40 |
| Spark plug type | NGK CR9E | NGK CR9EIA-9 |
| Cooling | Liquid | Liquid |
| Valves | 16 | 8 |
| Bore | 62.0 mm | 83.0 mm |
| Stroke | 49.6 mm | 60.0 mm |
| Throttle bore | 38.0 mm | 36.0 mm |
| Weight to power | 2.16 kg/hp | 2.88 kg/hp |
| Power to weight | 463 hp/Ton | 347 hp/Ton |
| Battery type | GT12B-4, 12V 10Ah | 12V 8.6Ah |
| Gearbox | Yamaha FZ600 | Kawasaki Z650 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | RK 520 | |
| Gears count | 6 | 6 |
| Primary ratio | 1.708 | 2.095 |
| Final drive | 3.2 | 3.067 |
| 1. gear | 2.846 (98 km/h) | 2.438 (71 km/h) |
| 2. gear | 1.947 (144 km/h) | 1.714 (101 km/h) |
| 3. gear | 1.545 (181 km/h) | 1.333 (130 km/h) |
| 4. gear | 1.333 (210 km/h) | 1.111 (156 km/h) |
| 5. gear | 1.19 (235 km/h) | 0.966 (180 km/h) |
| 6. gear | 1.074 (260 km/h) | 0.852 (204 km/h) |
| Chasis | Yamaha FZ600 | Kawasaki Z650 |
|---|---|---|
| Frame type | Double cradle steel | Trellis, high tensile steel |
| Front susp. | 41mm fork | 41mm Telescopic fork, 124.00 mm travel |
| Rear susp. | Monoshock | Monoshock |