Norton 650SS (1968) vs Kawasaki ZX-R 250 Ninja (1991-92)
Comparison technical specifications
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| Make: | Norton | Kawasaki |
| Model: | 650SS | ZX-R 250 Ninja |
| Years: | 1968 | 1991-92 |
| Engine: | Four stroke, parallel twin cylinder, push rod, 2 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity: | 647 cc / 39.5 cu in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 68 X 89 mm | 49 x 33.1 mm |
| Compression Ratio: | 8.9:1 | 12.2:1 |
| Cooling System: | Air cooled | Liquid cooled |
| Induction: | 2 x Ø30 mm Amal concentric carburetors | 4x Keihin CVK D30 carburetors |
| Starting: | Kick | Electric |
| Max Power: | 38.8 hW / 52 hp @ 6800 rpm | 45 hp / 32.8 kW @ 15000 rpm |
| Transmission: | 4 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Frame: | Featherbed duplex steel cradle | Perimeter, pressed aluminium |
| Front Suspension: | Telescopic forks | Telescopic forks |
| Rear Suspension: | Dual shocks, 5-way adjustable | Uni-track, Swing arm |
| Front Brakes: | Ø203 mm Drum | 2x discs 2 piston calipers |
| Rear Brakes: | Ø178 mm Drum | Single disc 1 piston caliper |
| Front Tyre: | 3.25-19 | 110/70-R17 54H |
| Rear Tyre: | 4.00-18 | 140/60-R18 64H |
| Dry-Weight: | 185 kg / 408 lbs | 141 kg / 311 lbs |
| Fuel Capacity: | 13.5 L / 3.6 US gal | 15 Litres / 3.4 US gal |