Kawasaki ZX-R 250 Ninja (1989-90) vs Kawasaki Zephyr 400 (1989-91)
Comparison technical specifications
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| Make: | Kawasaki | Kawasaki |
| Model: | ZX-R 250 Ninja | Zephyr 400 |
| Years: | 1989-90 | 1989-91 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke parallel twin cylinder. DOHC, 2 valves per cylinder |
| Capacity: | 249 cc / 15.2 cu-in | 399 cc / 24.4 cu-in |
| Bore x Stroke: | 49 x 33.1 mm | 55 х 42 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 12.2:1 | 9.7:1 |
| Induction: | 4x Keihin CVK D30 carburetors | 4X Keihin CVK30 carburetors |
| Ignition: | TCBI | Full transistor |
| Starting: | Electric | Electric |
| Max Power: | 45 hp / 32.8 kW @ 15000 rpm | 49 hp / 36.8 kW @ 11000 rpm |
| Max Torque: | 2.6 kgf-m / 24.5 Nm @ 11500 rpm | 3.1 kgf m / 22.4 lb-ft @ 10500 rpm |
| Clutch: | Wet, Multi-disc, Manual, Cable-actuated | Wet multi disc |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Telescopic forks | Telescopic forks |
| Rear Suspension: | Uni-track, Swing arm | Dual shocks |
| Front Brakes: | 2x discs 2 piston calipers | 2x discs |
| Rear Brakes: | Single disc 1 piston caliper | Single disc |
| Front Tyre: | 110/70-R17 54H | 110/80-17 |
| Rear Tyre: | 140/60-R18 64H | 140/70-18 |
| Rake: | 24° | 27° |
| Trail: | 85 mm / 3.1 in | 102 mm / 4.0 in |
| Wheelbase: | 1360 mm / 53.5 in | 1435 mm / 56.5 in |
| Seat Height: | 735 mm / 28.9 in | 770 mm / 30.1 in |
| Ground Clearance: | 141 mm / 5.1 in | 120 mm / 4.1 in |
| Dry Weight: | 141 kg / 311 lbs | 179 kg / 395 lbs |
| Fuel Capacity: | 15 Litres / 3.4 US gal | 14 Litres / 3.6 US gal |