Ducati 125 Sport (1957-60) vs KTM 690 Duke (2008)
Comparison technical specifications
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| Make: | Ducati | KTM |
| Model: | 125 Sport | 690 Duke |
| Years: | 1957-60 | 2008 |
| Engine: | Four stroke, single-cylinder, OHC, bevel gear driven | Four stroke, single cylinder, SOHC, 4 valves |
| Capacity: | 124.4 cc / 7.6 cu in | 653.7 cc / 39.91 cu in |
| Bore x Stroke: | 55.2 x 52 mm | 102 x 80 mm |
| Compression Ratio: | 8.0:1 | 11.8:1 |
| Cooling System: | Air cooled | Liquid Cooled |
| Induction: | Dell'Orto UB20BS carburetor | Generation Keihin EMS with EPT (Electric Power Throttle) |
| Ignition: | Battery and coil, 6V 40W generator | Kokusan DC-CDI |
| Spark Plug: | Marelli CW260N | NGK LKAR 8AI - 9 |
| Battery: | SAFA 3L3, 13.5 Ah | 12 V / 11.2 Ah |
| Starting: | Kick | Electric |
| Max Power: | 7.5 kW / 10 hp @ 8500 rpm | 46 kW / 65 hp @ 7500 rpm |
| Primary Drive Ratio: | 3.00:1 | 36:79 |
| Transmission: | 4 Speed | 6 Speed |
| Gear Ratios: | 1st 2.75 / 2nd 1.65 / 3rd 1.18 / 4th 0.97:1 | 1st 14:35 / 2nd 16:28 / 3rd 21:28 / 4th 21:23 / 5th 23:22 / 6th 23:20 |
| Clutch: | Wet, multi-plate | APTC multi-disc wet clutch, hydraulically operated |
| Final Drive: | Chain | Chain X-Ring 5/8 x 5/16" |
| Front Suspension: | Hydraulically damped telescopic forks, Marzocci | WP Upside-down forks, 4860 ROMA |
| Rear Suspension: | Swingarm, dual shocks, 3-way adjustable | WP monoshock, 4618 with Pro-lever deflector |
| Front Brakes: | Drum | Single 320 mm floating disc, radially screwed four-piston brake caliper |
| Rear Brakes: | Drum | Single 240 mm floating disc, single piston caliper |
| Front Tyre: | 2.50 - 17 CEAT | 120/70 - R17 |
| Rear Tyre: | 2.75 - 17 CEAT | 160/60 - R17 |
| Dry Weight: | 100.5 kg / 221 lbs | 148.5 kg / 327 in |
| Fuel Capacity: | 16 L / 4.2 US gal / 3.5 Imp gal | 13.5 Litres / 3.6 US gal / 3.0 Imp gal |