| Engine | Kawasaki Z900 | Kawasaki Z400 |
|---|---|---|
| Displacement | 948 cc | 399 cc |
| Max power | 125 hp (@9 500 RPM) | 45 hp (@10 000 RPM) |
| Max torque | 72 lb ft (@7 700 RPM) | 28 lb ft (@8 000 RPM) |
| Redline | 10 500 RPM | 12 000 RPM |
| Idling speed | 1 100 RPM | 1 300 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Inline-4 | DOHC Inline-2 |
| Compression | 11.80:1 | 11.50:1 |
| Oil capacity | 3.79 quart | 1.89 quart |
| Oil type | SAE 10W40 | |
| Spark plug type | NGK CR9EIA-9 | NGK LMAR9G |
| Cooling | Liquid | Liquid |
| Valves | 16 | 8 |
| Bore | 73.4 mm | 70.0 mm |
| Stroke | 56.0 mm | 51.8 mm |
| Throttle bore | 32.0 mm | |
| Weight to power | 3.70 lbs/hp | 8.18 lbs/hp |
| Power to weight | 674 hp/2500lbs | 305 hp/2500lbs |
| Battery type | 12 V 8 Ah, YTX9-BS | 12V 8Ah |
| Gearbox | Kawasaki Z900 | Kawasaki Z400 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | 520 | |
| Gears count | 6 | 6 |
| Primary ratio | 1.627 | 2.219 |
| Final drive | 2.933 | 2.929 |
| 1. gear | 2.692 (60 mph) | 2.929 (45 mph) |
| 2. gear | 2.059 (79 mph) | 2.056 (65 mph) |
| 3. gear | 1.65 (98 mph) | 1.619 (82 mph) |
| 4. gear | 1.409 (115 mph) | 1.333 (99 mph) |
| 5. gear | 1.222 (133 mph) | 1.154 (115 mph) |
| 6. gear | 1.034 (157 mph) | 1.037 (127 mph) |
| Chasis | Kawasaki Z900 | Kawasaki Z400 |
|---|---|---|
| Frame type | Tubular backbone (with engine subframe), high tensile steel | Trellis frame |
| Front susp. | 41 mm inverted fork (120 mm travel) | 41mm fork, 4.72 in travel |
| Rear susp. | Bottom-Link Uni-Trak (137 mm travel) | Monoshock, 5.12 in travel |