KTM 620 LC4 Supermono (1998) vs KTM 690 Duke R (2012)
Comparison technical specifications
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| Make: | KTM | KTM |
| Model: | 620 LC4 Supermono | 690 Duke R |
| Years: | 1998 | 2012 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valves | Four stroke, single cylinder, SOHC, 4 valves |
| Capacity: | 609 cc / 37.2 cu in | 690 cc / 42.1 cu in |
| Bore x Stroke: | 101 x 76 mm | 102 x 84.5 mm |
| Compression Ratio: | 10.4:1 | 12.6:1 |
| Cooling System: | Liquid cooled | Liquid Cooled |
| Induction: | Dell'Orto PHM 40 SD | Generation Keihin EMS with EPT (Electric Power Throttle) |
| Ignition: | KDC-CDI | Kokusan DC-CDI |
| Starting: | Kick & electric | Electric |
| Max Power: | 40.1 kW / 55 hp @ 7000 rpm | 52.2 kW / 70 hp @ 7500 rpm |
| Max Torque: | 60 Nm / 6.1 kgf-m / 44.3 lb-ft @ 5500 rpm | 69.8 Nm / 7.1 kgf-m / 51.6 ft-lb @ 6550 rpm |
| Clutch: | Wet, multiplate | APTC multi-disc wet clutch, hydraulically operated |
| Transmission: | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain X-Ring 5/8 x 5/16" |
| Front Suspension: | WP Telescopic forks, compression and rebound adjustable | WP Upside-down forks, 4357 ROMA |
| Front Wheel Travel: | 285 mm / 9.1 in | 135 mm / 5.3 in |
| Rear Suspension: | Single chock, preload, compression and rebound adjustable | WP monoshock, 4618 with Pro-lever deflector |
| Rear Wheel Travel: | 320 mm / 12.6 in | 135 mm / 5.3 in |
| Front Brakes: | Single 320 mm disc, 4 piston caliper | Single 320 mm floating disc, radially screwed four-piston brake caliper |
| Rear Brakes: | Single 220 mm disc, 1 piston caliper | Single 240 mm floating disc, single piston caliper |
| Front Tyre: | 120/70 - 17 | 120/70 - ZR17 M/C 58W TL |
| Rear Tyre: | 160/60 - 17 | 160/60 - ZR17 M/C 69W TL |
| Fuel Capacity: | 12 L / 3.2 US gal / 2.6 Imp gal | 14 Litres / 3.7 US gal / 3.1 Imp gal |