| Engine | Kawasaki ZX-25R | Kawasaki ZX-6R |
|---|---|---|
| Displacement | 249 cc | 636 cc |
| Max power | 45 hp (@12 000 RPM) | 128 hp (@14 000 RPM) |
| Max torque | 24 lb ft (@9 000 RPM) | 47 lb ft (@11 500 RPM) |
| Redline | 17 000 RPM | 15 000 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Inline-4 | DOHC Inline-4 |
| Compression | 12.90:1 | |
| Oil capacity | 3.22 quart | |
| Oil type | 10W50, Motul 5100 10W50, Liqui Moly 10W50 | |
| Spark plug type | NGK CR9E | |
| Cooling | Liquid | Liquid |
| Valves | 16 | |
| Bore | 68.0 mm | |
| Stroke | 43.8 mm | |
| Weight to power | 3.31 lbs/hp | |
| Power to weight | 755 hp/2500lbs | |
| Battery type | 12V 8Ah |
| Gearbox | Kawasaki ZX-25R | Kawasaki ZX-6R |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | 520 | |
| Gears count | 0 | 6 |
| Primary ratio | 1.891 | |
| Final drive | 2.866 | |
| 1. gear | 2.923 (70 mph) | |
| 2. gear | 2.055 (99 mph) | |
| 3. gear | 1.666 (122 mph) | |
| 4. gear | 1.45 (141 mph) | |
| 5. gear | 1.272 (160 mph) | |
| 6. gear | 1.153 (177 mph) |
| Chasis | Kawasaki ZX-25R | Kawasaki ZX-6R |
|---|---|---|
| Frame type | Tubular, diamond | |
| Front susp. | USD fork, 120 mm travel | |
| Rear susp. | Monoshock (uni-trak) 5.31 in travel120/65 |