Gilera RX 250 Amizonas (1985) vs KTM 690 Duke (2009)
Comparison technical specifications
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| Make: | Gilera | KTM |
| Model: | RX 250 Amizonas | 690 Duke |
| Years: | 1985 | 2009 |
| Engine: | Two stroke, single cylinder, reed valve | Four stroke, single cylinder, SOHC, 4 valves |
| Capacity: | 248.9 cc / 15.2 cu-in | 653.7 cc / 39.91 cu in |
| Bore x Stroke: | 71 x 62 mm | 102 x 80 mm |
| Cooling System: | Liquid cooled | Liquid Cooled |
| Compression Ratio: | 13.5:1 | 11.8:1 |
| Induction: | 32mm Dell'Orto carburetor | Generation Keihin EMS with EPT (Electric Power Throttle) |
| Ignition: | Electronic | Kokusan DC-CDI |
| Starting: | Kick | Electric |
| Max Power: | 38 hp / 28.3 kW @ 7500 rpm | 46 kW / 65 hp @ 7500 rpm |
| Max Torque: | 31.3 Nm / 23.1 lb-ft @ 7000 rpm | 65 Nm / 6.6 kgf-m / 47.9 ft-lb @ 6550 rpm |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain X-Ring 5/8 x 5/16" |
| Front Suspension: | Telescopic forks | WP Upside-down forks, 4860 ROMA |
| Rear Suspension: | Alloy swing arm adjustable single shock | WP monoshock, 4618 with Pro-lever deflector |
| Front Brakes: | Single 240mm disc | Single 320 mm floating disc, radially screwed four-piston brake caliper |
| Rear Brakes: | Drum | Single 240 mm floating disc, single piston caliper |
| Front Tyre: | 2.75-21 | 120/70 - R17 |
| Rear Tyre: | 4.60-17 | 160/60 - R17 |
| Dry Weight: | 122 kg / 275 lbs | 148.5 kg / 327 in |
| Fuel Capacity: | 15 Litres / 3.9 US gal | 13.5 Litres / 3.6 US gal / 3.0 Imp gal |