Kawasaki Ninja 650R (2010-11) vs Kawasaki AR 50 (1981-96)
Comparison technical specifications
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| Make: | Kawasaki | Kawasaki |
| Model: | Ninja 650R | AR 50 |
| Years: | 2010-11 | 1981-96 |
| Engine: | Four stroke, parallel twin cylinder. DOHC, 4 valves per cylinder. | Two stroke, single cylinder, disc valve. |
| Capacity: | 649 cc / 39.65 cu /in | 49 cc / 3.0 cu-in |
| Bore x Stroke: | 83 x 60 mm | 49 x 41.6 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 11.3:1 | 7.8:1 |
| Induction: | 2x Keihin 38mm throttle bodies | Mikuni VM18SC Carburetor |
| Ignition: | TCBI with digital advance | Capacitor discharge |
| Starting: | Electric | Kick |
| Max Power: | 70.4 hp / 51.8 kW @ 7000 rpm | 10.2 hp / 7.5 kW @ 8500 rpm |
| Max Torque: | 65.7 Nm / 48.5 lb-ft @ 7000 rpm | 8.53 Nm @ 8000 rpm |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | O-ring chain | Chain |
| Frame: | Semi-double cradle, high-tensile steel | Steel single-cradle |
| Front Suspension: | 41 mm hydraulic telescopic fork | Telescopic fork |
| Rear Suspension: | Single offset laydown shock with adjustable spring preload, | Swingarm with monoshock |
| Front Brakes: | 2x 300mm discs 2 piston calipers | Single 232mm disc |
| Rear Brakes: | Single 220mm disc | 130 drum |
| Front Tyre: | 120/70 -17 | 2.50–18 |
| Rear Tyre: | 160/50 -17 | 2.75–18 |
| Wheelbase: | 1410 mm / 55.5 in. | 1205 mm / 47.4 in |
| Ground Clearance: | 146 mm / 5.7 in | 175 mm / 6.8 in |
| Dry Weight: | 177.8 kg / 393 lbs | 78 kg / 172 lbs |
| Fuel Capacity: | 15.5 Litres / 4.1 US gal | 9.8 Litres / 2.1 US gal |