| Engine | Kawasaki Z400 | Kawasaki Z800 |
|---|---|---|
| Displacement | 399 cc | 806 cc |
| Max power | 45 hp (@10 000 RPM) | 113 hp (@10 200 RPM) |
| Max torque | 28 lb ft (@8 000 RPM) | 61 lb ft (@8 000 RPM) |
| Redline | 12 000 RPM | 12 000 RPM |
| Idling speed | 1 300 RPM | 1 100 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Inline-2 | DOHC Inline-4 |
| Compression | 11.50:1 | 11.90:1 |
| Oil capacity | 1.89 quart | 3.60 quart |
| Oil type | SAE 10W40 | 10W40, Motul 300V 10W40, Shell Rotella 10W40 |
| Spark plug type | NGK LMAR9G | NGK CR9EK, ND U27ETR |
| Cooling | Liquid | Liquid |
| Valves | 8 | 16 |
| Bore | 70.0 mm | 71.0 mm |
| Stroke | 51.8 mm | 50.9 mm |
| Throttle bore | 32.0 mm | |
| Weight to power | 8.18 lbs/hp | 4.51 lbs/hp |
| Power to weight | 305 hp/2500lbs | 554 hp/2500lbs |
| Battery type | 12V 8Ah | 12 V 8 Ah, YTX9-BS |
| Gearbox | Kawasaki Z400 | Kawasaki Z800 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | 520 | |
| Gears count | 6 | 6 |
| Primary ratio | 2.219 | 1.714 |
| Final drive | 2.929 | 3.0 |
| 1. gear | 2.929 (45 mph) | 2.571 (67 mph) |
| 2. gear | 2.056 (65 mph) | 1.941 (89 mph) |
| 3. gear | 1.619 (82 mph) | 1.556 (111 mph) |
| 4. gear | 1.333 (99 mph) | 1.333 (129 mph) |
| 5. gear | 1.154 (115 mph) | 1.2 (143 mph) |
| 6. gear | 1.037 (127 mph) | 1.095 (157 mph) |
| Chasis | Kawasaki Z400 | Kawasaki Z800 |
|---|---|---|
| Frame type | Trellis frame | Tubular backbone (with engine subframe), high tensile steel |
| Front susp. | 41mm fork, 4.72 in travel | 41 mm inverted fork (120 mm travel) |
| Rear susp. | Monoshock, 5.12 in travel | Bottom-Link Uni-Trak (137 mm travel) |